July 2003
The following document specifies Spansion memory products that are now of fered by both Adv anced
Micro Devices and Fujitsu. Although the document is marked with the name of the company that orig-
inally developed the specification, these products will be offered to customers of both AMD and
Fujitsu.
Continuity of Specifications
There is no change to this datasheet as a result of offering the device as a Spansion product. Any
changes that have been made are the result of normal datasheet improvement and are noted in the
document revision summary, where supported. Future routine revi sions will occur when appropriate,
and changes will be noted in a revision summary.
Continuity of Ordering Part Numbers
AMD and Fujitsu continue to support existing part numbers beginning with “ Am” and “MBM”. To order
these products, please use only the Ordering Part Numbers listed in this document.
For More Information
Please contact your local AMD or Fujitsu sales office for additional information about Spansion
memory solutions.
Am29DL640H
Data Sheet
Publication Number 27082 Revision AAmendment 6 Issue Date February 9, 2005
For new designs, S29JL064H supersedes Am29DL640H and is the factory-recommended migration
path for this device. Please refer to the S29JL064H Datasheet for specifications and ordering
information.
THIS PAGE LEFT INTENTIONALLY BLANK.
Publication# 27082 Rev: AAmendment/6
Issue Date: February 9, 2005
Refer to AMD’s Website (www.amd.com) for the latest information.
For new designs, S29JL064H supersedes Am29DL640H and is the factory-recommended migration path for this
device. Please refer to the S29JL064H Datasheet for specifications and ordering information.
Am29DL640H
64 Megabit (8 M x 8-Bit/4 M x 16-Bit)
CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory
DISTINCTIVE CHARACTERISTICS
ARCHITECTURAL ADVANTAGES
■Simultaneous Read/Write operations
— Data can be continuously read from one bank while
executing erase/program functions in another bank.
— Zero latency between read and write operations
■Flexible BankTM architecture
— Read may occur in any of the three banks not being
written or erased.
— Four banks may be grouped by customer to achieve
desired bank divisions.
■Boot Sectors
— Top and bottom boot sectors in the same device
— Any combination of sectors can be erased
■Manufactured on 0.13 µm process technology
■Secured Silicon Sector: Extra 256 Byte sector
—Factory locked and identifiable: 16 bytes available for
secure, random factory Electronic Serial Number;
verifiable as factory locked through autoselect
function. ExpressFlash option allows entire sector to
be available for factory-secured data
—Customer lockable: One-time programmable only.
Once locked, data cannot be changed
■Zero Power Operation
— Sophisticated power management circuits reduce
power consumed during inactive periods to nearly
zero.
■Compatible with JEDEC standards
— Pinout and software compatible with
single-power-supply flash standard
PACKAGE OPTIONS
■63-ball Fine Pitch BGA
■48-pin TSOP
PERFORMANCE CHARACTERISTICS
■High performance
— Access time as fast as 55 ns
— Program time: 4 µs/word typical using accelerated
programming function
■Ultra low power consumption (typical values)
— 2 mA active read current at 1 MHz
— 10 mA active read current at 5 MHz
— 200 nA in standby or automatic sleep mode
■Minimum 1 million erase cycles guaranteed per
sector
■20 year data retention at 125°C
— Reliable operation for the life of the system
SOFTWARE FEATURES
■Data Management Software (DMS)
— AMD-supplied software manages data programming,
enabling EEPROM emulation
■Supports Common Flash Memory Interface (CFI)
■Erase Suspend/Erase Resume
— Suspends erase operations to read data from, or
program data to, a sector that is not being erased,
then resumes the erase operation.
■Data# Polling and Toggle Bits
— Provides a software method of detecting the status of
program or erase cycles
■Unlock Bypass Program command
— Reduces overall programming time when issuing
multiple program command sequences
HARDWARE FEATURES
■Ready/Busy# output (RY/BY#)
— Hardware method for detecting program or erase
cycle completion
■Hardware reset pin (RESET#)
— Hardware method of resetting the internal state
machine to the read mode
■WP#/ACC input pin
— Write protect (WP#) function protects sectors 0, 1,
140, and 141, regardless of sector protect status
— Acceleration (ACC) function accelerates program
timing
■Sector protection
— Hardware method to prevent any program or erase
operation within a sector
— Temporary Sector Unprotect allows changing data in
protected sectors in-system
2 Am29DL640H February 9, 2005
GENERAL DESCRIPTION
The Am29DL640H is a 64 megabit, 3.0 volt-only flash
memory device, organized as 4,194,304 words of 16
bits each or 8,388,608 bytes of 8 bits each. Word
mode data appears on DQ15–DQ0; byte mode data
appears on DQ7–DQ0. The device is designed to be
programmed in-system with the standard 3.0 volt VCC
supply, and can also be programmed in standard
EPROM programmers.
The device is available with an access time of 55, 60,
70, or 90 ns and is offered in 48-pin TSOP and 63-ball
Fine Pitch BGA packages. Standard control
pins—chip enable (CE#), write enable (WE#), and out-
put enable (OE#)—control normal read and write op-
erations, and avoid bus contention issues.
The device requires only a single 3.0 volt power sup-
ply for both read and write functions. Internally gener-
ated and regulated voltages are provided for the
program and erase operations.
Simultaneous Read/Write Operations with
Zero Latency
The Simultaneous Read/Write architecture provides
simultaneous operation by dividing the memory
space into four banks, two 8 Mb banks with small and
large sectors, and two 24 Mb banks of large sectors.
Sector addresses are fixed, system software can be
used to form user-defined bank groups.
During an Erase/Program operation, any of the three
non-busy banks may be read from. Note that only two
banks can operate simultaneously. The device can im-
prove overall system performance by allowing a host
system to program or erase in one bank, then
immediately and simultaneously read from the other
bank, with zero latency. This releases the system from
waiting for the completion of program or erase
operations.
The Am29DL640H can be organized as both a top and
bottom boot sector configuration.
Am29DL640H Features
The Secured Silicon Sector is an extra 256 byte sec-
tor capable of being permanently locked by AMD or
customers. The Secured Silicon Customer Indicator
Bit (DQ6) is permanently set to 1 if the part has been
customer locked, permanently set to 0 if the part has
been factory locked, and is 0 if customer lockable. This
way, customer lockable parts can never be used to re-
place a factory locked part.
Factory locked parts provide several options. The Se-
cured Silicon Sector may store a secure, random 16
byte ESN (Electronic Serial Number), customer code
(programmed through AMD’s ExpressFlash service),
or both. Customer Lockable parts may utilize the Se-
cured Silicon Sector as bonus space, reading and writ-
ing like any other flash sector, or may permanently
lock their own code there.
DMS (Data Management Software) allows systems
to easily take advantage of the advanced architecture
of the simultaneous read/write product line by allowing
removal of EEPROM devices. DMS will also allow the
system software to be simplified, as it will perform all
functions necessary to modify data in file structures,
as opposed to single-byte modifications. To write or
update a particular piece of data (a phone number or
configuration data, for example), the user only needs
to state which piece of data is to be updated, and
where the updated data is located in the system. This
is an advantage compared to systems where
user-written software must keep track of the old data
location, status, logical to physical translation of the
data onto the Flash memory device (or memory de-
vices), and more. Using DMS, user-written software
does not need to interface with the Flash memory di-
rectly. Instead, the user's software accesses the Flash
memory by calling one of only six functions. AMD pro-
vides this software to simplify system design and soft-
ware integration efforts.
The device offers complete compatibility with the
JEDEC 42.4 single-power-supply Flash command
set standard. Commands are written to the command
register using standard microprocessor write timings.
Reading data out of the device is similar to reading
from other Flash or EPROM devices.
The host system can detect whether a program or
erase operation is complete by using the device sta-
tus bits: RY/BY# pin, DQ7 (Data# Polling) and
DQ6/DQ2 (toggle bits). After a program or erase cycle
has been completed, the device automatically returns
to the read mode.
The sector erase architecture allows memory sec-
tors to be erased and reprogrammed without affecting
the data contents of other sectors. The device is fully
erased when shipped from the factory.
Hardware data protection measures include a low
VCC detector that automatically inhibits write opera-
tions during power transitions. The hardware sector
protection feature disables both program and erase
operations in any combination of the sectors of mem-
ory. This can be achieved in-system or via program-
ming equipment.
The device offers two power-saving features. When
addresses have been stable for a specified amount of
time, the device enters the automatic sleep mode.
The system can also place the device into the
standby mode. Power consumption is greatly re-
duced in both modes.
Bank Megabits Sector Sizes
Bank 1 8 Mb Eight 8 Kbyte/4 Kword,
Fifteen 64 Kbyte/32 Kword
Bank 2 24 Mb Forty-eight 64 Kbyte/32 Kword
Bank 3 24 Mb Forty-eight 64 Kbyte/32 Kword
Bank 4 8 Mb Eight 8 Kbyte/4 Kword,
Fifteen 64 Kbyte/32 Kword
February 9, 2005 Am29DL640H 3
TABLE OF CONTENTS
Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 4
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . 5
Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 7
Device Bus Operations . . . . . . . . . . . . . . . . . . . . . 8
Table 1. Am29DL640H Device Bus Operations ................................8
Requirements for Reading Array Data ..................................... 8
Writing Commands/Command Sequences .............................. 9
Accelerated Program Operation ............................................... 9
Autoselect Functions ................................................................ 9
Simultaneous Read/Write Operations with Zero Latency ......... 9
Automatic Sleep Mode ........................................................... 10
RESET#: Hardware Reset Pin ............................................... 10
Output Disable Mode .............................................................. 10
Table 2. Am29DL640H Sector Architecture ....................................10
Table 3. Bank Address ....................................................................13
Table 5. Am29DL640H Autoselect Codes, (High Voltage Method) 14
Table 6. Am29DL640H Boot Sector/Sector Block Addresses for
Protection/Unprotection ...................................................................15
Write Protect (WP#) ................................................................ 15
Table 7. WP#/ACC Modes ..............................................................16
Temporary Sector Unprotect .................................................. 16
Figure 1. Temporary Sector Unprotect Operation........................... 16
Figure 2. In-System Sector Protect/Unprotect Algorithms .............. 17
Secured Silicon Sector
Flash Memory Region ............................................................ 18
Figure 3. Secured Silicon Sector Protect Verify.............................. 19
Hardware Data Protection ...................................................... 19
Low VCC Write Inhibit ............................................................ 19
Write Pulse “Glitch” Protection ............................................... 19
Logical Inhibit .......................................................................... 19
Power-Up Write Inhibit ............................................................ 19
Common Flash Memory Interface (CFI) . . . . . . . 19
Command Definitions . . . . . . . . . . . . . . . . . . . . . 23
Reading Array Data ................................................................ 23
Reset Command ..................................................................... 23
Autoselect Command Sequence ............................................ 23
Enter Secured Silicon Sector/Exit Secured Silicon Sector
Command Sequence .............................................................. 23
Byte/Word Program Command Sequence ............................. 24
Unlock Bypass Command Sequence ..................................... 24
Figure 4. Program Operation .......................................................... 25
Chip Erase Command Sequence ........................................... 25
Sector Erase Command Sequence ........................................ 25
Figure 5. Erase Operation............................................................... 26
Erase Suspend/Erase Resume Commands ........................... 26
Write Operation Status . . . . . . . . . . . . . . . . . . . . 28
DQ7: Data# Polling ................................................................. 28
Figure 6. Data# Polling Algorithm ................................................... 28
DQ6: Toggle Bit I .................................................................... 29
Figure 7. Toggle Bit Algorithm........................................................ 29
DQ2: Toggle Bit II ................................................................... 30
Reading Toggle Bits DQ6/DQ2 ............................................... 30
DQ5: Exceeded Timing Limits ................................................ 30
DQ3: Sector Erase Timer ....................................................... 30
Table 13. Write Operation Status ................................................... 31
Absolute Maximum Ratings. . . . . . . . . . . . . . . . . 32
Figure 8. Maximum Negative Overshoot Waveform ...................... 32
Figure 9. Maximum Positive Overshoot Waveform........................ 32
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 10. ICC1 Current vs. Time (Showing Active and
Automatic Sleep Currents) ............................................................. 34
Figure 11. Typical ICC1 vs. Frequency ............................................ 34
Test Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 12. Test Setup.................................................................... 35
Figure 13. Input Waveforms and Measurement Levels ................. 35
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 36
Read-Only Operations ........................................................... 36
Figure 14. Read Operation Timings............................................... 36
Hardware Reset (RESET#) .................................................... 37
Figure 15. Reset Timings ............................................................... 37
Word/Byte Configuration (BYTE#) .......................................... 38
Figure 16. BYTE# Timings for Read Operations............................ 38
Figure 17. BYTE# Timings for Write Operations............................ 38
Erase and Program Operations .............................................. 39
Figure 18. Program Operation Timings.......................................... 40
Figure 19. Accelerated Program Timing Diagram.......................... 40
Figure 20. Chip/Sector Erase Operation Timings .......................... 41
Figure 21. Back-to-back Read/Write Cycle Timings ...................... 42
Figure 22. Data# Polling Timings (During Embedded Algorithms). 42
Figure 23. Toggle Bit Timings (During Embedded Algorithms)...... 43
Figure 24. DQ2 vs. DQ6................................................................. 43
Temporary Sector Unprotect .................................................. 44
Figure 25. Temporary Sector Unprotect Timing Diagram .............. 44
Figure 26. Sector/Sector Block Protect and
Unprotect Timing Diagram ............................................................. 45
Alternate CE# Controlled Erase and Program Operations ..... 46
Figure 27. Alternate CE# Controlled Write (Erase/Program)
Operation Timings.......................................................................... 47
Erase And Programming Performance. . . . . . . . 48
Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 48
TSOP & BGA Pin Capacitance. . . . . . . . . . . . . . . 48
Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
FBE063—63-Ball Fine-Pitch Ball Grid Array (fBGA)
12 x 11 mm package .............................................................. 49
TS 048—48-Pin Standard TSOP ............................................ 50
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 51
TS 048—48-Pin Standard TSOP. . . . . . . . . . . . . . 52
Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 53
4 Am29DL640H February 9, 2005
PRODUCT SELECTOR GUIDE
BLOCK DIAGRAM
Part Number Am29DL640H
Speed Option Standard Voltage Range: VCC = 2.7–3.6 V 55 60 70 90
Max Access Time (ns), tACC 55 60 70 90
CE# Access (ns), tCE 55 60 70 90
OE# Access (ns), tOE 25 25 30 35
VCC
VSS
Bank 1 Address
Bank 2 Address
A21–A0
RESET#
WE#
CE#
BYTE#
DQ0–DQ15
WP#/ACC
STATE
CONTROL
&
COMMAND
REGISTER
RY/BY#
Bank 1
X-Decoder
OE# BYTE#
DQ15–DQ0
Status
Control
A21–A0
A21–A0
A21–A0A21–A0
DQ15–DQ0
DQ15–DQ0
DQ15–DQ0
DQ15–DQ0
Mux
Mux
Mux
Bank 2
X-Decoder
Y-gate
Bank 3
X-Decoder
Bank 4
X-Decoder
Y-gate
Bank 3 Address
Bank 4 Address
February 9, 2005 Am29DL640H 5
CONNECTION DIAGRAMS
1
16
2
3
4
5
6
7
8
17
18
19
20
21
22
23
24
9
10
11
12
13
14
15
48
33
47
46
45
44
43
42
41
40
39
38
37
36
35
34
25
32
31
30
29
28
27
26
A15
A18
A14
A13
A12
A11
A10
A9
A8
A19
A20
WE#
RESET#
A21
WP#/ACC
RY/BY#
A1
A17
A7
A6
A5
A4
A3
A2
A16
DQ2
BYTE#
VSS
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ9
DQ1
DQ8
DQ0
OE#
VSS
CE#
A0
DQ5
DQ12
DQ4
VCC
DQ11
DQ3
DQ10
48-Pin Standard TSOP
C2 D2 E2 F2 G2 H2 J2 K2
C3 D3 E3 F3 G3 H3 J3 K3
C4 D4 E4 F4 G4 H4 J4 K4
C5 D5 E5 F5 G5 H5 J5 K5
C6 D6 E6 F6 G6 H6 J6 K6
C7 D7A7 B7
A8 B8
A1 B1
A2
E7 F7 G7 H7 J7 K7 L7
L8
M7
M8
L1
L2
M1
M2
NC* NC*NC*
NC* NC* NC* NC*
NC* NC*
NC* NC*NC* NC*
NC* NC* DQ15/A-1 VSSBYTE#A16A15A14A12A13
DQ13 DQ6DQ14DQ7A11A10A8A9
VCC DQ4DQ12DQ5A19A21RESET#WE#
DQ11 DQ3DQ10DQ2A20A18WP#/ACCRY/BY#
DQ9 DQ1DQ8DQ0A5A6A17A7
OE# VSSCE#A0A1A2A4A3
* Balls are shorted together via the substrate but not connected to the die.
63-Ball Fine-Pitch BGA (FBGA)
Top View, Balls Facing Down
6 Am29DL640H February 9, 2005
PIN DESCRIPTION
A21–A0 = 22 Addresses
DQ14–DQ0 = 15 Data Inputs/Outputs (x16-only de-
vices)
DQ15/A-1 = DQ15 (Data Input/Output, word
mode), A-1 (LSB Address Input, byte
mode)
CE# = Chip Enable
OE# = Output Enable
WE# = Write Enable
WP#/ACC = Hardware Write Protect/
Acceleration Pin
RESET# = Hardware Reset Pin, Active Low
BYTE# = Selects 8-bit or 16-bit mode
RY/BY# = Ready/Busy Output
VCC = 3.0 volt-only single power supply
(see Product Selector Guide for speed
options and voltage supply tolerances)
VSS = Device Ground
NC = Pin Not Connected Internally
LOGIC SYMBOL
22
16 or 8
DQ15–DQ0
(A-1)
A21–A0
CE#
OE#
WE#
RESET#
BYTE#
RY/BY#
WP#/ACC
February 9, 2005 Am29DL640H 7
ORDERING INFORMATION
Standard Products
AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is
formed by a combination of the following:
Valid Combinations
Valid Combinations list configurations planned to be supported in
volume for this device. Consult the local AMD sales office to con-
firm availability of specific valid combinations and to check on
newly released combinations.
Am29DL640H 70 E I
OPTIONAL PROCESSING
Blank = Standard Processing
N = 16-byte ESN devices
(Contact an AMD representative for more information)
TEMPERATURE RANGE
I = Industrial (–40°C to +85°C)
E = Extended (–55°C to +125°C)
PACKAGE TYPE
E = 48-Pin Thin Small Outline Package
(TSOP) Standard Pinout (TS 048)
WH = 63-Ball Fine-Pitch Ball Grid Array (FBGA)
0.80 mm pitch, 12 x 11 mm package (FBE063)
SPEED OPTION
See Product Selector Guide and Valid Combinations
DEVICE NUMBER/DESCRIPTION
Am29DL640H
64 Megabit (8 M x 8-Bit/4 M x 16-Bit) CMOS Flash Memory
3.0 Volt-only Read, Program, and Erase
Valid Combinations for TSOP Packages
Am29DL640H55 EI
Am29DL640H60
Am29DL640H70 EI, EE
Am29DL640H90
Valid Combinations for BGA Packages
Order Number Package Marking
Am29DL640H55
WHI
D640H55V
I
Am29DL640H60 D640H60V
Am29DL640H70 D640H70V
Am29DL640H90 D640H90V
8 Am29DL640H February 9, 2005
DEVICE BUS OPERATIONS
This section describes the requirements and use of
the device bus operations, which are initiated through
the internal command register. The command register
itself does not occupy any addressable memory loca-
tion. The register is a latch used to store the com-
mands, along with the address and data information
needed to execute the command. The contents of the
register serve as inputs to the internal state machine.
The state machine outputs dictate the function of the
device. Table 1 lists the device bus operations, the in-
puts and control levels they require, and the resulting
output. The following subsections describe each of
these operations in further detail.
Table 1. Am29DL640H Device Bus Operations
Legend: L = Logic Low = VIL, H = Logic High = VIH, VID = 11.5–12.5 V, VHH = 9.0 ± 0.5 V, X = Don’t Care, SA = Sector Address,
AIN = Address In, DIN = Data In, DOUT = Data Out
Notes:
1. Addresses are A21:A0 in word mode (BYTE# = VIH), A21:A-1 in byte mode (BYTE# = VIL).
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the “Sector/Sector
Block Protection and Unprotection” section.
3. If WP#/ACC = VIL, sectors 0, 1, 140, and 141 remain protected. If WP#/ACC = VIH, protection on sectors 0, 1, 140, and 141
depends on whether they were last protected or unprotected using the method described in “Sector/Sector Block Protection
and Unprotection”. If WP#/ACC = VHH, all sectors will be unprotected.
Word/Byte Configuration
The BYTE# pin controls whether the device data I/O
pins operate in the byte or word configuration. If the
BYTE# pin is set at logic ‘1’, the device is in word con-
figuration, DQ15–DQ0 are active and controlled by
CE# and OE#.
If the BYTE# pin is set at logic ‘0’, the device is in byte
configuration, and only data I/O pins DQ7–DQ0 are
active and controlled by CE# and OE#. The data I/O
pins DQ14–DQ8 are tri-stated, and the DQ15 pin is
used as an input for the LSB (A-1) address function.
Requirements for Reading Array Data
To read array data from the outputs, the system must
drive the CE# and OE# pins to VIL. CE# is the power
control and selects the device. OE# is the output con-
trol and gates array data to the output pins. WE#
should remain at VIH. The BYTE# pin determines
whether the device outputs array data in words or
bytes.
The internal state machine is set for reading array data
upon device power-up, or after a hardware reset. This
ensures that no spurious alteration of the memory
content occurs during the power transition. No com-
mand is necessary in this mode to obtain array data.
Standard microprocessor read cycles that assert valid
Operation CE# OE# WE# RESET# WP#/ACC
Addresses
(Note 2)
DQ15–DQ8
DQ7–
DQ0
BYTE#
= VIH
BYTE#
= VIL
Read L L H H L/H AIN DOUT DQ14–DQ8 =
High-Z, DQ15 = A-1
DOUT
Write L H L H (Note 3) AIN DIN DIN
Standby VCC ±
0.3 V XX
VCC ±
0.3 V L/H X High-Z High-Z High-Z
Output Disable L H H H L/H X High-Z High-Z High-Z
Reset X X X L L/H X High-Z High-Z High-Z
Sector Protect (Note 2) L H L VID L/H SA, A6 = L,
A1 = H, A0 = L XXD
IN
Sector Unprotect (Note 2) L H L VID (Note 3) SA, A6 = H,
A1 = H, A0 = L XXD
IN
Temporary Sector
Unprotect XXX V
ID (Note 3) AIN DIN High-Z DIN
February 9, 2005 Am29DL640H 9
addresses on the device address inputs produce valid
data on the device data outputs. Each bank remains
enabled for read access until the command register
contents are altered.
Refer to the AC Read-Only Operations table for timing
specifications and to Figure 14 for the timing diagram.
ICC1 in the DC Characteristics table represents the ac-
tive current specification for reading array data.
Writing Commands/Command Sequences
To write a command or command sequence (which in-
cludes programming data to the device and erasing
sectors of memory), the system must drive WE# and
CE# to VIL, and OE# to VIH.
For program operations, the BYTE# pin determines
whether the device accepts program data in bytes or
words. Refer to “Word/Byte Configuration” for more in-
formation.
The device features an Unlock Bypass mode to facili-
tate faster programming. Once a bank enters the Un-
lock Bypass mode, only two write cycles are required
to program a word or byte, instead of four. The
“Byte/Word Program Command Sequence” section
has details on programming data to the device using
both standard and Unlock Bypass command se-
quences.
An erase operation can erase one sector, multiple sec-
tors, or the entire device. Table 2 indicates the address
space that each sector occupies. Similarly, a “sector
address” is the address bits required to uniquely select
a sector. The “Command Definitions” section has de-
tails on erasing a sector or the entire chip, or suspend-
ing/resuming the erase operation.
The device address space is divided into four banks. A
“bank address” is the address bits required to uniquely
select a bank.
ICC2 in the DC Characteristics table represents the ac-
tive current specification for the write mode. The AC
Characteristics section contains timing specification
tables and timing diagrams for write operations.
Accelerated Program Operation
The device offers accelerated program operations
through the ACC function. This is one of two functions
provided by the WP#/ACC pin. This function is prima-
rily intended to allow faster manufacturing throughput
at the factory.
If the system asserts VHH on this pin, the device auto-
matically enters the aforementioned Unlock Bypass
mode, temporarily unprotects any protected sectors,
and uses the higher voltage on the pin to reduce the
time required for program operations. The system
would use a two-cycle program command sequence
as required by the Unlock Bypass mode. Removing
VHH from the WP#/ACC pin returns the device to nor-
mal operation. Note that VHH must not be asserted on
WP#/ACC for operations other than accelerated pro-
gramming, or device damage may result. In addition,
the WP#/ACC pin must not be left floating or uncon-
nected; inconsistent behavior of the device may result.
See “Write Protect (WP#)” on page 15 for related infor-
mation.
Autoselect Functions
If the system writes the autoselect command se-
quence, the device enters the autoselect mode. The
system can then read autoselect codes from the inter-
nal register (which is separate from the memory array)
on DQ15–DQ0. Standard read cycle timings apply in
this mode. Refer to the Autoselect Mode and Autose-
lect Command Sequence sections for more informa-
tion.
Simultaneous Read/Write Operations with
Zero Latency
This device is capable of reading data from one bank
of memory while programming or erasing in the other
bank of memory. An erase operation may also be sus-
pended to read from or program to another location
within the same bank (except the sector being
erased). Figure 21 shows how read and write cycles
may be initiated for simultaneous operation with zero
latency. ICC6 and ICC7 in the DC Characteristics table
represent the current specifications for read-while-pro-
gram and read-while-erase, respectively.
Standby Mode
When the system is not reading or writing to the de-
vice, it can place the device in the standby mode. In
this mode, current consumption is greatly reduced,
and the outputs are placed in the high impedance
state, independent of the OE# input.
The device enters the CMOS standby mode when the
CE# and RESET# pins are both held at VCC ± 0.3 V.
(Note that this is a more restricted voltage range than
VIH.) If CE# and RESET# are held at VIH, but not within
VCC ± 0.3 V, the device will be in the standby mode,
but the standby current will be greater. The device re-
quires standard access time (tCE) for read access
when the device is in either of these standby modes,
before it is ready to read data.
If the device is deselected during erasure or program-
ming, the device draws active current until the
operation is completed.
ICC3 in the DC Characteristics table represents the
standby current specification.
10 Am29DL640H February 9, 2005
Automatic Sleep Mode
The automatic sleep mode minimizes Flash device en-
ergy consumption. The device automatically enables
this mode when addresses remain stable for tACC +
30 ns. The automatic sleep mode is independent of
the CE#, WE#, and OE# control signals. Standard ad-
dress access timings provide new data when ad-
dresses are changed. While in sleep mode, output
data is latched and always available to the system.
ICC5 in the DC Characteristics table represents the
automatic sleep mode current specification.
RESET#: Hardware Reset Pin
The RESET# pin provides a hardware method of re-
setting the device to reading array data. When the RE-
SET# pin is driven low for at least a period of tRP
, the
device immediately terminates any operation in
progress, tristates all output pins, and ignores all
read/write commands for the duration of the RESET#
pulse. The device also resets the internal state ma-
chine to reading array data. The operation that was in-
terrupted should be reinitiated once the device is
ready to accept another command sequence, to en-
sure data integrity.
Current is reduced for the duration of the RESET#
pulse. When RESET# is held at VSS±0.3 V, the device
draws CMOS standby current (ICC4). If RESET# is held
at VIL but not within VSS±0.3 V, the standby current will
be greater.
The RESET# pin may be tied to the system reset cir-
cuitry. A system reset would thus also reset the Flash
memory, enabling the system to read the boot-up firm-
ware from the Flash memory.
If RESET# is asserted during a program or erase op-
eration, the RY/BY# pin remains a “0” (busy) until the
internal reset operation is complete, which requires a
time of tREADY (during Embedded Algorithms). The sys-
tem can thus monitor RY/BY# to determine whether
the reset operation is complete. If RESET# is asserted
when a program or erase operation is not executing
(RY/BY# pin is “1”), the reset operation is completed
within a time of tREADY (not during Embedded Algo-
rithms). The system can read data tRH after the RE-
SET# pin returns to VIH.
Refer to the AC Characteristics tables for RESET# pa-
rameters and to Figure 15 for the timing diagram.
Output Disable Mode
When the OE# input is at VIH, output from the device is
disabled. The output pins are placed in the high
impedance state.
Table 2. Am29DL640H Sector Architecture
Bank Sector Sector Address
A21–A12
Sector Size
(Kbytes/Kwords)
(x8)
Address Range
(x16)
Address Range
Bank 1
SA0 0000000000 8/4 000000h–001FFFh 00000h–00FFFh
SA1 0000000001 8/4 002000h–003FFFh 01000h–01FFFh
SA2 0000000010 8/4 004000h–005FFFh 02000h–02FFFh
SA3 0000000011 8/4 006000h–007FFFh 03000h–03FFFh
SA4 0000000100 8/4 008000h–009FFFh 04000h–04FFFh
SA5 0000000101 8/4 00A000h–00BFFFh 05000h–05FFFh
SA6 0000000110 8/4 00C000h–00DFFFh 06000h–06FFFh
SA7 0000000111 8/4 00E000h–00FFFFh 07000h–07FFFh
SA8 0000001xxx 64/32 010000h–01FFFFh 08000h–0FFFFh
SA9 0000010xxx 64/32 020000h–02FFFFh 10000h–17FFFh
SA10 0000011xxx 64/32 030000h–03FFFFh 18000h–1FFFFh
SA11 0000100xxx 64/32 040000h–04FFFFh 20000h–27FFFh
SA12 0000101xxx 64/32 050000h–05FFFFh 28000h–2FFFFh
SA13 0000110xxx 64/32 060000h–06FFFFh 30000h–37FFFh
SA14 0000111xxx 64/32 070000h–07FFFFh 38000h–3FFFFh
SA15 0001000xxx 64/32 080000h–08FFFFh 40000h–47FFFh
SA16 0001001xxx 64/32 090000h–09FFFFh 48000h–4FFFFh
SA17 0001010xxx 64/32 0A0000h–0AFFFFh 50000h–57FFFh
SA18 0001011xxx 64/32 0B0000h–0BFFFFh 58000h–5FFFFh
SA19 0001100xxx 64/32 0C0000h–0CFFFFh 60000h–67FFFh
SA20 0001101xxx 64/32 0D0000h–0DFFFFh 68000h–6FFFFh
SA21 0001110xxx 64/32 0E0000h–0EFFFFh 70000h–77FFFh
SA22 0001111xxx 64/32 0F0000h–0FFFFFh 78000h–7FFFFh
February 9, 2005 Am29DL640H 11
Bank 2
SA23 0010000xxx 64/32 100000h–10FFFFh 80000h–87FFFh
SA24 0010001xxx 64/32 110000h–11FFFFh 88000h–8FFFFh
SA25 0010010xxx 64/32 120000h–12FFFFh 90000h–97FFFh
SA26 0010011xxx 64/32 130000h–13FFFFh 98000h–9FFFFh
SA27 0010100xxx 64/32 140000h–14FFFFh A0000h–A7FFFh
SA28 0010101xxx 64/32 150000h–15FFFFh A8000h–AFFFFh
SA29 0010110xxx 64/32 160000h–16FFFFh B0000h–B7FFFh
SA30 0010111xxx 64/32 170000h–17FFFFh B8000h–BFFFFh
SA31 0011000xxx 64/32 180000h–18FFFFh C0000h–C7FFFh
SA32 0011001xxx 64/32 190000h–19FFFFh C8000h–CFFFFh
SA33 0011010xxx 64/32 1A0000h–1AFFFFh D0000h–D7FFFh
SA34 0011011xxx 64/32 1B0000h–1BFFFFh D8000h–DFFFFh
SA35 0011000xxx 64/32 1C0000h–1CFFFFh E0000h–E7FFFh
SA36 0011101xxx 64/32 1D0000h–1DFFFFh E8000h–EFFFFh
SA37 0011110xxx 64/32 1E0000h–1EFFFFh F0000h–F7FFFh
SA38 0011111xxx 64/32 1F0000h–1FFFFFh F8000h–FFFFFh
SA39 0100000xxx 64/32 200000h–20FFFFh 100000h–107FFFh
SA40 0100001xxx 64/32 210000h–21FFFFh 108000h–10FFFFh
SA41 0100010xxx 64/32 220000h–22FFFFh 110000h–117FFFh
SA42 0101011xxx 64/32 230000h–23FFFFh 118000h–11FFFFh
SA43 0100100xxx 64/32 240000h–24FFFFh 120000h–127FFFh
SA44 0100101xxx 64/32 250000h–25FFFFh 128000h–12FFFFh
SA45 0100110xxx 64/32 260000h–26FFFFh 130000h–137FFFh
SA46 0100111xxx 64/32 270000h–27FFFFh 138000h–13FFFFh
SA47 0101000xxx 64/32 280000h–28FFFFh 140000h–147FFFh
SA48 0101001xxx 64/32 290000h–29FFFFh 148000h–14FFFFh
SA49 0101010xxx 64/32 2A0000h–2AFFFFh 150000h–157FFFh
SA50 0101011xxx 64/32 2B0000h–2BFFFFh 158000h–15FFFFh
SA51 0101100xxx 64/32 2C0000h–2CFFFFh 160000h–167FFFh
SA52 0101101xxx 64/32 2D0000h–2DFFFFh 168000h–16FFFFh
SA53 0101110xxx 64/32 2E0000h–2EFFFFh 170000h–177FFFh
SA54 0101111xxx 64/32 2F0000h–2FFFFFh 178000h–17FFFFh
SA55 0110000xxx 64/32 300000h–30FFFFh 180000h–187FFFh
SA56 0110001xxx 64/32 310000h–31FFFFh 188000h–18FFFFh
SA57 0110010xxx 64/32 320000h–32FFFFh 190000h–197FFFh
SA58 0110011xxx 64/32 330000h–33FFFFh 198000h–19FFFFh
SA59 0110100xxx 64/32 340000h–34FFFFh 1A0000h–1A7FFFh
SA60 0110101xxx 64/32 350000h–35FFFFh 1A8000h–1AFFFFh
SA61 0110110xxx 64/32 360000h–36FFFFh 1B0000h–1B7FFFh
SA62 0110111xxx 64/32 370000h–37FFFFh 1B8000h–1BFFFFh
SA63 0111000xxx 64/32 380000h–38FFFFh 1C0000h–1C7FFFh
SA64 0111001xxx 64/32 390000h–39FFFFh 1C8000h–1CFFFFh
SA65 0111010xxx 64/32 3A0000h–3AFFFFh 1D0000h–1D7FFFh
SA66 0111011xxx 64/32 3B0000h–3BFFFFh 1D8000h–1DFFFFh
SA67 0111100xxx 64/32 3C0000h–3CFFFFh 1E0000h–1E7FFFh
SA68 0111101xxx 64/32 3D0000h–3DFFFFh 1E8000h–1EFFFFh
SA69 0111110xxx 64/32 3E0000h–3EFFFFh 1F0000h–1F7FFFh
SA70 0111111xxx 64/32 3F0000h–3FFFFFh 1F8000h–1FFFFFh
Table 2. Am29DL640H Sector Architecture (Continued)
Bank Sector Sector Address
A21–A12
Sector Size
(Kbytes/Kwords)
(x8)
Address Range
(x16)
Address Range
12 Am29DL640H February 9, 2005
Bank 3
SA71 1000000xxx 64/32 400000h–40FFFFh 200000h–207FFFh
SA72 1000001xxx 64/32 410000h–41FFFFh 208000h–20FFFFh
SA73 1000010xxx 64/32 420000h–42FFFFh 210000h–217FFFh
SA74 1000011xxx 64/32 430000h–43FFFFh 218000h–21FFFFh
SA75 1000100xxx 64/32 440000h–44FFFFh 220000h–227FFFh
SA76 1000101xxx 64/32 450000h–45FFFFh 228000h–22FFFFh
SA77 1000110xxx 64/32 460000h–46FFFFh 230000h–237FFFh
SA78 1000111xxx 64/32 470000h–47FFFFh 238000h–23FFFFh
SA79 1001000xxx 64/32 480000h–48FFFFh 240000h–247FFFh
SA80 1001001xxx 64/32 490000h–49FFFFh 248000h–24FFFFh
SA81 1001010xxx 64/32 4A0000h–4AFFFFh 250000h–257FFFh
SA82 1001011xxx 64/32 4B0000h–4BFFFFh 258000h–25FFFFh
SA83 1001100xxx 64/32 4C0000h–4CFFFFh 260000h–267FFFh
SA84 1001101xxx 64/32 4D0000h–4DFFFFh 268000h–26FFFFh
SA85 1001110xxx 64/32 4E0000h–4EFFFFh 270000h–277FFFh
SA86 1001111xxx 64/32 4F0000h–4FFFFFh 278000h–27FFFFh
SA87 1010000xxx 64/32 500000h–50FFFFh 280000h–28FFFFh
SA88 1010001xxx 64/32 510000h–51FFFFh 288000h–28FFFFh
SA89 1010010xxx 64/32 520000h–52FFFFh 290000h–297FFFh
SA90 1010011xxx 64/32 530000h–53FFFFh 298000h–29FFFFh
SA91 1010100xxx 64/32 540000h–54FFFFh 2A0000h–2A7FFFh
SA92 1010101xxx 64/32 550000h–55FFFFh 2A8000h–2AFFFFh
SA93 1010110xxx 64/32 560000h–56FFFFh 2B0000h–2B7FFFh
SA94 1010111xxx 64/32 570000h–57FFFFh 2B8000h–2BFFFFh
SA95 1011000xxx 64/32 580000h–58FFFFh 2C0000h–2C7FFFh
SA96 1011001xxx 64/32 590000h–59FFFFh 2C8000h–2CFFFFh
SA97 1011010xxx 64/32 5A0000h–5AFFFFh 2D0000h–2D7FFFh
SA98 1011011xxx 64/32 5B0000h–5BFFFFh 2D8000h–2DFFFFh
SA99 1011100xxx 64/32 5C0000h–5CFFFFh 2E0000h–2E7FFFh
SA100 1011101xxx 64/32 5D0000h–5DFFFFh 2E8000h–2EFFFFh
SA101 1011110xxx 64/32 5E0000h–5EFFFFh 2F0000h–2FFFFFh
SA102 1011111xxx 64/32 5F0000h–5FFFFFh 2F8000h–2FFFFFh
SA103 1100000xxx 64/32 600000h–60FFFFh 300000h–307FFFh
SA104 1100001xxx 64/32 610000h–61FFFFh 308000h–30FFFFh
SA105 1100010xxx 64/32 620000h–62FFFFh 310000h–317FFFh
SA106 1100011xxx 64/32 630000h–63FFFFh 318000h–31FFFFh
SA107 1100100xxx 64/32 640000h–64FFFFh 320000h–327FFFh
SA108 1100101xxx 64/32 650000h–65FFFFh 328000h–32FFFFh
SA109 1100110xxx 64/32 660000h–66FFFFh 330000h–337FFFh
SA110 1100111xxx 64/32 670000h–67FFFFh 338000h–33FFFFh
SA111 1101000xxx 64/32 680000h–68FFFFh 340000h–347FFFh
SA112 1101001xxx 64/32 690000h–69FFFFh 348000h–34FFFFh
SA113 1101010xxx 64/32 6A0000h–6AFFFFh 350000h–357FFFh
SA114 1101011xxx 64/32 6B0000h–6BFFFFh 358000h–35FFFFh
SA115 1101100xxx 64/32 6C0000h–6CFFFFh 360000h–367FFFh
SA116 1101101xxx 64/32 6D0000h–6DFFFFh 368000h–36FFFFh
SA117 1101110xxx 64/32 6E0000h–6EFFFFh 370000h–377FFFh
SA118 1101111xxx 64/32 6F0000h–6FFFFFh 378000h–37FFFFh
Table 2. Am29DL640H Sector Architecture (Continued)
Bank Sector Sector Address
A21–A12
Sector Size
(Kbytes/Kwords)
(x8)
Address Range
(x16)
Address Range
February 9, 2005 Am29DL640H 13
Note: The address range is A21:A-1 in byte mode (BYTE#=VIL) or A21:A0 in word mode (BYTE#=VIH).
Table 3. Bank Address
Table 4. Secured Silicon Sector Addresses
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equip-
ment to automatically match a device to be pro-
grammed with its corresponding programming
algorithm. However, the autoselect codes can also be
accessed in-system through the command register.
When using programming equipment, the autoselect
mode requires VID on address pin A9. Address pins
must be as shown in Table 5. In addition, when verify-
ing sector protection, the sector address must appear
on the appropriate highest order address bits (see
Table 2). Table 5 shows the remaining address bits
that are don’t care. When all necessary bits have been
set as required, the programming equipment may then
read the corresponding identifier code on DQ7–DQ0.
However, the autoselect codes can also be accessed
in-system through the command register, for instances
when the Am29DL640 is erased or programmed in a
system without access to high voltage on the A9 pin.
The command sequence is illustrated in Table 12.
Note that if a Bank Address (BA) on address bits A21,
A20, and A19 is asserted during the third write cycle of
the autoselect command, the host system can read
autoselect data from that bank and then immediately
read array data from another bank, without exiting the
autoselect mode.
Bank 4
SA119 1110000xxx 64/32 700000h–70FFFFh 380000h–387FFFh
SA120 1110001xxx 64/32 710000h–71FFFFh 388000h–38FFFFh
SA121 1110010xxx 64/32 720000h–72FFFFh 390000h–397FFFh
SA122 1110011xxx 64/32 730000h–73FFFFh 398000h–39FFFFh
SA123 1110100xxx 64/32 740000h–74FFFFh 3A0000h–3A7FFFh
SA124 1110101xxx 64/32 750000h–75FFFFh 3A8000h–3AFFFFh
SA125 1110110xxx 64/32 760000h–76FFFFh 3B0000h–3B7FFFh
SA126 1110111xxx 64/32 770000h–77FFFFh 3B8000h–3BFFFFh
SA127 1111000xxx 64/32 780000h–78FFFFh 3C0000h–3C7FFFh
SA128 1111001xxx 64/32 790000h–79FFFFh 3C8000h–3CFFFFh
SA129 1111010xxx 64/32 7A0000h–7AFFFFh 3D0000h–3D7FFFh
SA130 1111011xxx 64/32 7B0000h–7BFFFFh 3D8000h–3DFFFFh
SA131 1111100xxx 64/32 7C0000h–7CFFFFh 3E0000h–3E7FFFh
SA132 1111101xxx 64/32 7D0000h–7DFFFFh 3E8000h–3EFFFFh
SA133 1111110xxx 64/32 7E0000h–7EFFFFh 3F0000h–3F7FFFh
SA134 1111111000 8/4 7F0000h–7F1FFFh 3F8000h–3F8FFFh
SA135 1111111001 8/4 7F2000h–7F3FFFh 3F9000h–3F9FFFh
SA136 1111111010 8/4 7F4000h–7F5FFFh 3FA000h–3FAFFFh
SA137 1111111011 8/4 7F6000h–7F7FFFh 3FB000h–3FBFFFh
SA138 1111111100 8/4 7F8000h–7F9FFFh 3FC000h–3FCFFFh
SA139 1111111101 8/4 7FA000h–7FBFFFh 3FD000h–3FDFFFh
SA140 1111111110 8/4 7FC000h–7FDFFFh 3FE000h–3FEFFFh
SA141 1111111111 8/4 7FE000h–7FFFFFh 3FF000h–3FFFFFh
Bank A21–A19
1000
2 001, 010, 011
3 100, 101, 110
4111
Device Sector Size
(x8)
Address Range
(x16)
Address Range
Am29DL640H 256 bytes 000000h–0000FFh 000000h–00007Fh
Table 2. Am29DL640H Sector Architecture (Continued)
Bank Sector Sector Address
A21–A12
Sector Size
(Kbytes/Kwords)
(x8)
Address Range
(x16)
Address Range
14 Am29DL640H February 9, 2005
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Table 12. This method
does not require VID. Refer to the Autoselect Com-
mand Sequence section for more information.
Table 5. Am29DL640H Autoselect Codes, (High Voltage Method)
Legend:
L = Logic Low = V
IL
, H = Logic High = V
IH
, BA = Bank Address, SA = Sector Address, X = Don’t care
.
Description CE# OE# WE#
A21
to
A12
A11
to
A10 A9
A8
to
A7 A6
A5
to
A4 A3 A2 A1 A0
DQ15 to DQ8 DQ7
to
DQ0
BYTE#
= VIH
BYTE#
= VIL
Manufacturer ID:
AMD LLHBAX
VID XLXLLLL X X 01h
Device ID
Read Cycle 1
LLHBAX
VID X
L
X
L L L H 22h
X
7Eh
Read Cycle 2 L H H H L 22h 02h
Read Cycle 3 L H H H H 22h 01h
Sector Protection
Verification LLHSAX
VID XLXLLHL X X 01h (protected),
00h (unprotected)
Secured Silicon
Indicator Bit (DQ6,
DQ7)
LLHBAX
VID XLXLLHH X X
81h (factory locked),
01h (customer and
factory locked)
February 9, 2005 Am29DL640H 15
Sector/Sector Block Protection and
Unprotection
(Note: For the following discussion, the term “sector”
applies to both sectors and sector blocks. A sector
block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see Table
6).
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both pro-
gram and erase operations in previously protected
sectors. Sector protection/unprotection can be imple-
mented via two methods.
Table 6. Am29DL640H Boot Sector/Sector Block
Addresses for Protection/Unprotection
Sector protect/Sector Unprotect requires VID on the
RESET# pin only, and can be implemented either
in-system or via programming equipment. Figure 2
shows the algorithms and Figure 26 shows the timing
diagram. For sector unprotect, all unprotected sectors
must first be protected prior to the first sector unpro-
tect write cycle. Note that the sector unprotect algo-
rithm unprotects all sectors in parallel. All previously
protected sectors must be individually re-protected. To
change data in protected sectors efficiently, the tem-
porary sector unprotect function is available. See
“Temporary Sector Unprotect”.
The device is shipped with all sectors unprotected.
AMD offers the option of programming and protecting
sectors at its factory prior to shipping the device
through AMD’s ExpressFlash™ Service. Contact an
AMD representative for details.
It is possible to determine whether a sector is pro-
tected or unprotected. See the Autoselect Mode sec-
tion for details.
Write Protect (WP#)
The Write Protect function provides a hardware
method of protecting without using VID. This function is
one of two provided by the WP#/ACC pin.
If the system asserts VIL on the WP#/ACC pin, the de-
vice disables program and erase functions in sectors
0, 1, 140, and 141, independently of whether those
sectors were protected or unprotected using the
method described in “Sector/Sector Block Protection
and Unprotection”.
Sector A21–A12
Sector/
Sector Block Size
SA0 0000000000 8 Kbytes
SA1 0000000001 8 Kbytes
SA2 0000000010 8 Kbytes
SA3 0000000011 8 Kbytes
SA4 0000000100 8 Kbytes
SA5 0000000101 8 Kbytes
SA6 0000000110 8 Kbytes
SA7 0000000111 8 Kbytes
SA8–SA10
0000001XXX,
0000010XXX,
0000011XXX,
192 (3x64) Kbytes
SA11–SA14 00001XXXXX 256 (4x64) Kbytes
SA15–SA18 00010XXXXX 256 (4x64) Kbytes
SA19–SA22 00011XXXXX 256 (4x64) Kbytes
SA23–SA26 00100XXXXX 256 (4x64) Kbytes
SA27-SA30 00101XXXXX 256 (4x64) Kbytes
SA31-SA34 00110XXXXX 256 (4x64) Kbytes
SA35-SA38 00111XXXXX 256 (4x64) Kbytes
SA39-SA42 01000XXXXX 256 (4x64) Kbytes
SA43-SA46 01001XXXXX 256 (4x64) Kbytes
SA47-SA50 01010XXXXX 256 (4x64) Kbytes
SA51-SA54 01011XXXXX 256 (4x64) Kbytes
SA55–SA58 01100XXXXX 256 (4x64) Kbytes
SA59–SA62 01101XXXXX 256 (4x64) Kbytes
SA63–SA66 01110XXXXX 256 (4x64) Kbytes
SA67–SA70 01111XXXXX 256 (4x64) Kbytes
SA71–SA74 10000XXXXX 256 (4x64) Kbytes
SA75–SA78 10001XXXXX 256 (4x64) Kbytes
SA79–SA82 10010XXXXX 256 (4x64) Kbytes
SA83–SA86 10011XXXXX 256 (4x64) Kbytes
SA87–SA90 10100XXXXX 256 (4x64) Kbytes
SA91–SA94 10101XXXXX 256 (4x64) Kbytes
SA95–SA98 10110XXXXX 256 (4x64) Kbytes
SA99–SA102 10111XXXXX 256 (4x64) Kbytes
SA103–SA106 11000XXXXX 256 (4x64) Kbytes
SA107–SA110 11001XXXXX 256 (4x64) Kbytes
SA111–SA114 11010XXXXX 256 (4x64) Kbytes
SA115–SA118 11011XXXXX 256 (4x64) Kbytes
SA119–SA122 11100XXXXX 256 (4x64) Kbytes
SA123–SA126 11101XXXXX 256 (4x64) Kbytes
SA127–SA130 11110XXXXX 256 (4x64) Kbytes
SA131–SA133
1111100XXX,
1111101XXX,
1111110XXX
192 (3x64) Kbytes
SA134 1111111000 8 Kbytes
SA135 1111111001 8 Kbytes
SA136 1111111010 8 Kbytes
SA137 1111111011 8 Kbytes
SA138 1111111100 8 Kbytes
SA139 1111111101 8 Kbytes
SA140 1111111110 8 Kbytes
SA141 1111111111 8 Kbytes
Sector A21–A12
Sector/
Sector Block Size
16 Am29DL640H February 9, 2005
If the system asserts VIH on the WP#/ACC pin, the de-
vice reverts to whether sectors 0, 1, 140, and 141
were last set to be protected or unprotected. That is,
sector protection or unprotection for these sectors de-
pends on whether they were last protected or unpro-
tected using the method described in “Sector/Sector
Block Protection and Unprotection”.
Note that the WP#/ACC pin must not be left floating or
unconnected; inconsistent behavior of the device may
result.
Table 7. WP#/ACC Modes
Temporary Sector Unprotect
(Note: For the following discussion, the term “sector”
applies to both sectors and sector blocks. A sector
block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see Table
6).
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Temporary Sector Unprotect mode is activated by set-
ting the RESET# pin to VID. During this mode, formerly
protected sectors can be programmed or erased by
selecting the sector addresses. Once VID is removed
from the RESET# pin, all the previously protected sec-
tors are protected again. Figure 1 shows the algo-
rithm, and Figure 25 shows the timing diagrams, for
this feature. If the WP#/ACC pin is at VIL, sectors 0, 1,
140, and 141 will remain protected during the Tempo-
rary sector Unprotect mode.
Figure 1. Temporary Sector Unprotect Operation
WP# Input
Voltage
Device
Mode
VIL
Disables programming and erasing in
SA0, SA1, SA140, and SA141
VIH
Enables programming and erasing in
SA0, SA1, SA140, and SA141,
dependent on whether they were last
protected or unprotected.
VHH
Enables accelerated programming
(ACC). See “Accelerated Program
Operation” on page 9.
START
Perform Erase or
Program Operations
RESET# = VIH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = VID
(Note 1)
Notes:
1. All protected sectors unprotected (If WP#/ACC = VIL,
sectors 0, 1, 140, and 141 will remain protected).
2. All previously protected sectors are protected once
again.
February 9, 2005 Am29DL640H 17
Figure 2. In-System Sector Protect/Unprotect Algorithms
Sector Protect:
Write 60h to sector
address with
A6 = 0, A1 = 1,
A0 = 0
Set up sector
address
Wait 150 µs
Verify Sector
Protect: Write 40h
to sector address
with A6 = 0,
A1 = 1, A0 = 0
Read from
sector address
with A6 = 0,
A1 = 1, A0 = 0
START
PLSCNT = 1
RESET# = VID
Wait 1 µs
First Write
Cycle = 60h?
Data = 01h?
Remove VID
from RESET#
Write reset
command
Sector Protect
complete
Yes
Yes
No
PLSCNT
= 25?
Yes
Device failed
Increment
PLSCNT
Temporary Sector
Unprotect Mode
No
Sector Unprotect:
Write 60h to sector
address with
A6 = 1, A1 = 1,
A0 = 0
Set up first sector
address
Wait 15 ms
Verify Sector
Unprotect: Write
40h to sector
address with
A6 = 1, A1 = 1,
A0 = 0
Read from
sector address
with A6 = 1,
A1 = 1, A0 = 0
START
PLSCNT = 1
RESET# = VID
Wait 1 µs
Data = 00h?
Last sector
verified?
Remove VID
from RESET#
Write reset
command
Sector Unprotect
complete
Yes
No
PLSCNT
= 1000?
Yes
Device failed
Increment
PLSCNT
Temporary Sector
Unprotect Mode
No All sectors
protected?
Yes
Protect all sectors:
The indicated portion
of the sector protect
algorithm must be
performed for all
unprotected sectors
prior to issuing the
first sector
unprotect address
Set up
next sector
address
No
Yes
No
Yes
No
No
Yes
No
Sector Protect
Algorithm
Sector Unprotect
Algorithm
First Write
Cycle = 60h?
Protect another
sector?
Reset
PLSCNT = 1
18 Am29DL640H February 9, 2005
Secured Silicon Sector
Flash Memory Region
The Secured Silicon Sector feature provides a Flash
memory region that enables permanent part identifica-
tion through an Electronic Serial Number (ESN). The
Secured Silicon Sector is 256 bytes in length, and
uses a Secured Silicon Sector Indicator Bit (DQ7) to
indicate whether or not the Secured Silicon Sector is
locked when shipped from the factory. This bit is per-
manently set at the factory and cannot be changed,
which prevents cloning of a factory locked part. This
ensures the security of the ESN once the product is
shipped to the field.
AMD offers the device with the Secured Silicon Sector
either factory locked or customer lockable. The fac-
tory-locked version is always protected when shipped
from the factory, and has the Secured Silicon Sector
Indicator Bit permanently set to a “1.” The cus-
tomer-lockable version is shipped with the Secured
Silicon Sector unprotected, allowing customers to uti-
lize the that sector in any manner they choose. The
customer-lockable version has the Secured Silicon
Sector Indicator Bit permanently set to a “0.” Thus, the
Secured Silicon Sector Indicator Bit prevents cus-
tomer-lockable devices from being used to replace de-
vices that are factory locked. The Secured Silicon
Customer Indicator Bit (DQ6) is permanently set to 1 if
the part has been customer locked, permanently set to
0 if the part has been factory locked, and is 0 if cus-
tomer lockable.
The system accesses the Secured Silicon Sector Se-
cure through a command sequence (see “Enter Se-
cured Silicon Sector/Exit Secured Silicon Sector
Command Sequence”). After the system has written
the Enter Secured Silicon Sector command sequence,
it may read the Secured Silicon Sector by using the
addresses normally occupied by the boot sectors. This
mode of operation continues until the system issues
the Exit Secured Silicon Sector command sequence,
or until power is removed from the device. On
power-up, or following a hardware reset, the device re-
verts to sending commands to the first 256 bytes of
Sector 0. Note that the ACC function and unlock by-
pass modes are not available when the Secured Sili-
con Sector is enabled.
Factory Locked: Secured Silicon Sector
Programmed and Protected At the Factory
In a factory locked device, the Secured Silicon Sector
is protected when the device is shipped from the fac-
tory. The Secured Silicon Sector cannot be modified in
any way. The device is preprogrammed with both a ran-
dom number and a secure ESN. The 8-word random
number is at addresses 000000h–000007h in word
mode (or 000000h–00000Fh in byte mode). The se-
cure ESN is programmed in the next 8 words at ad-
dresses 000008h–00000Fh (or 000010h–00001Fh in
byte mode). The device is available preprogrammed
with one of the following:
■A random, secure ESN only
■Customer code through the ExpressFlash service
■Both a random, secure ESN and customer code
through the ExpressFlash service.
Customers may opt to have their code programmed by
AMD through the AMD ExpressFlash service. AMD
programs the customer’s code, with or without the ran-
dom ESN. The devices are then shipped from AMD’s
factory with the Secured Silicon Sector permanently
locked. Contact an AMD representative for details on
using AMD’s ExpressFlash service.
Customer Lockable: Secured Silicon Sector NOT
Programmed or Protected At the Factory
If the security feature is not required, the Secured Sili-
con Sector can be treated as an additional Flash
memory space. The Secured Silicon Sector can be
read any number of times, but can be programmed
and locked only once. Note that the accelerated pro-
gramming (ACC) and unlock bypass functions are not
available when programming the Secured Silicon Sec-
tor.
The Secured Silicon Sector area can be protected
using one of the following procedures:
■Write the three-cycle Enter Secured Silicon Sector
Region command sequence, and then follow the
in-system sector protect algorithm as shown in Fig-
ure 2, except that RESET# may be at either VIH or
VID. This allows in-system protection of the Secured
Silicon Sector Region without raising any device pin
to a high voltage. Note that this method is only ap-
plicable to the Secured Silicon Sector.
■To verify the protect/unprotect status of the Secured
Silicon Sector, follow the algorithm shown in Figure
3.
Once the Secured Silicon Sector is locked and veri-
fied, the system must write the Exit Secured Silicon
Sector Region command sequence to return to read-
ing and writing the remainder of the array.
The Secured Silicon Sector lock must be used with
caution since, once locked, there is no procedure
available for unlocking the Secured Silicon Sector area
and none of the bits in the Secured Silicon Sector
memory space can be modified in any way.
February 9, 2005 Am29DL640H 19
Figure 3. Secured Silicon Sector Protect Verify
Hardware Data Protection
The command sequence requirement of unlock cycles
for programming or erasing provides data protection
against inadvertent writes (refer to Table 12 for com-
mand definitions). In addition, the following hardware
data protection measures prevent accidental erasure
or programming, which might otherwise be caused by
spurious system level signals during VCC power-up
and power-down transitions, or from system noise.
Low VCC Write Inhibit
When VCC is less than VLKO, the device does not ac-
cept any write cycles. This protects data during VCC
power-up and power-down. The command register
and all internal program/erase circuits are disabled,
and the device resets to the read mode. Subsequent
writes are ignored until VCC is greater than VLKO. The
system must provide the proper signals to the control
pins to prevent unintentional writes when VCC is
greater than VLKO.
Write Pulse “Glitch” Protection
Noise pulses of less than 5 ns (typical) on OE#, CE#
or WE# do not initiate a write cycle.
Logical Inhibit
Write cycles are inhibited by holding any one of OE# =
VIL, CE# = VIH or WE# = VIH. To initiate a write cycle,
CE# and WE# must be a logical zero while OE# is a
logical one.
Power-Up Write Inhibit
If WE# = CE# = VIL and OE# = VIH during power up,
the device does not accept commands on the rising
edge of WE#. The internal state machine is automati-
cally reset to the read mode on power-up.
COMMON FLASH MEMORY INTERFACE
(CFI)
The Common Flash Interface (CFI) specification out-
lines device and host system software interrogation
handshake, which allows specific vendor-specified
software algorithms to be used for entire families of
devices. Software support can then be device-inde-
pendent, JEDEC ID-independent, and forward- and
backward-compatible for the specified flash device
families. Flash vendors can standardize their existing
interfaces for long-term compatibility.
This device enters the CFI Query mode when the sys-
tem writes the CFI Query command, 98h, to address
55h in word mode (or address AAh in byte mode), any
time the device is ready to read array data. The
system can read CFI information at the addresses
given in Tables 8–11. To terminate reading CFI data,
the system must write the reset command.The CFI
Query mode is not accessible when the device is exe-
cuting an Embedded Program or embedded Erase al-
gorithm.
The system can also write the CFI query command
when the device is in the autoselect mode. The device
enters the CFI query mode, and the system can read
CFI data at the addresses given in Tables 8–11. The
system must write the reset command to reading array
data.
For further information, please refer to the CFI Specifi-
cation and CFI Publication 100, available via the World
Wide Web at http://www.amd.com/flash/cfi. Alterna-
tively, contact an AMD representative for copies of
these documents.
Write 60h to
any address
Write 40h to SecSi
Sector address
with A6 = 0,
A1 = 1, A0 = 0
START
RESET# =
VIH or VID
Wait 1 µs
Read from SecSi
Sector address
with A6 = 0,
A1 = 1, A0 = 0
If data = 00h,
SecSi Sector is
unprotected.
If data = 01h,
SecSi Sector is
protected.
Remove VIH or VID
from RESET#
Write reset
command
SecSi Sector
Protect Verify
complete
20 Am29DL640H February 9, 2005
Table 8. CFI Query Identification String
Table 9. System Interface String
Addresses
(Word Mode)
Addresses
(Byte Mode) Data Description
10h
11h
12h
20h
22h
24h
0051h
0052h
0059h
Query Unique ASCII string “QRY”
13h
14h
26h
28h
0002h
0000h Primary OEM Command Set
15h
16h
2Ah
2Ch
0040h
0000h Address for Primary Extended Table
17h
18h
2Eh
30h
0000h
0000h Alternate OEM Command Set (00h = none exists)
19h
1Ah
32h
34h
0000h
0000h Address for Alternate OEM Extended Table (00h = none exists)
Addresses
(Word Mode)
Addresses
(Byte Mode) Data Description
1Bh 36h 0027h VCC Min. (write/erase)
D7–D4: volt, D3–D0: 100 millivolt
1Ch 38h 0036h VCC Max. (write/erase)
D7–D4: volt, D3–D0: 100 millivolt
1Dh 3Ah 0000h VPP Min. voltage (00h = no VPP pin present)
1Eh 3Ch 0000h VPP Max. voltage (00h = no VPP pin present)
1Fh 3Eh 0003h Typical timeout per single byte/word write 2N µs
20h 40h 0000h Typical timeout for Min. size buffer write 2N µs (00h = not supported)
21h 42h 0009h Typical timeout per individual block erase 2N ms
22h 44h 0000h Typical timeout for full chip erase 2N ms (00h = not supported)
23h 46h 0005h Max. timeout for byte/word write 2N times typical
24h 48h 0000h Max. timeout for buffer write 2N times typical
25h 4Ah 0004h Max. timeout per individual block erase 2N times typical
26h 4Ch 0000h Max. timeout for full chip erase 2N times typical (00h = not supported)
February 9, 2005 Am29DL640H 21
Table 10. Device Geometry Definition
Addresses
(Word Mode)
Addresses
(Byte Mode) Data Description
27h 4Eh 0017h Device Size = 2N byte
28h
29h
50h
52h
0002h
0000h Flash Device Interface description (refer to CFI publication 100)
2Ah
2Bh
54h
56h
0000h
0000h
Max. number of byte in multi-byte write = 2N
(00h = not supported)
2Ch 58h 0003h Number of Erase Block Regions within device
2Dh
2Eh
2Fh
30h
5Ah
5Ch
5Eh
60h
0007h
0000h
0020h
0000h
Erase Block Region 1 Information
(refer to the CFI specification or CFI publication 100)
31h
32h
33h
34h
62h
64h
66h
68h
007Dh
0000h
0000h
0001h
Erase Block Region 2 Information
(refer to the CFI specification or CFI publication 100)
35h
36h
37h
38h
6Ah
6Ch
6Eh
70h
0007h
0000h
0020h
0000h
Erase Block Region 3 Information
(refer to the CFI specification or CFI publication 100)
39h
3Ah
3Bh
3Ch
72h
74h
76h
78h
0000h
0000h
0000h
0000h
Erase Block Region 4 Information
(refer to the CFI specification or CFI publication 100)
22 Am29DL640H February 9, 2005
Table 11. Primary Vendor-Specific Extended Query
Addresses
(Word Mode)
Addresses
(Byte Mode) Data Description
40h
41h
42h
80h
82h
84h
0050h
0052h
0049h
Query-unique ASCII string “PRI”
43h 86h 0031h Major version number, ASCII (reflects modifications to the silicon)
44h 88h 0033h Minor version number, ASCII (reflects modifications to the CFI table)
45h 8Ah 000Ch
Address Sensitive Unlock (Bits 1-0)
0 = Required, 1 = Not Required
Silicon Revision Number (Bits 7-2)
46h 8Ch 0002h Erase Suspend
0 = Not Supported, 1 = To Read Only, 2 = To Read & Write
47h 8Eh 0001h Sector Protect
0 = Not Supported, X = Number of sectors per group
48h 90h 0001h Sector Temporary Unprotect
00 = Not Supported, 01 = Supported
49h 92h 0004h
Sector Protect/Unprotect scheme
01 =29F040 mode, 02 = 29F016 mode, 03 = 29F400, 04 = 29LV800
mode
4Ah 94h 0077h Simultaneous Operation
00 = Not Supported, X = Number of Sectors (excluding Bank 1)
4Bh 96h 0000h Burst Mode Type
00 = Not Supported, 01 = Supported
4Ch 98h 0000h Page Mode Type
00 = Not Supported, 01 = 4 Word Page, 02 = 8 Word Page
4Dh 9Ah 0085h ACC (Acceleration) Supply Minimum
00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV
4Eh 9Ch 0095h ACC (Acceleration) Supply Maximum
00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV
4Fh 9Eh 0001h
Top/Bottom Boot Sector Flag
00h = Uniform device, 01h = 8 x 8 Kbyte Sectors, Top And Bottom Boot
with Write Protect, 02h = Bottom Boot Device, 03h = Top Boot Device,
04h= Both Top and Bottom
50h A0h 0001h Program Suspend
0 = Not supported, 1 = Supported
57h AEh 0004h Bank Organization
00 = Data at 4Ah is zero, X = Number of Banks
58h B0h 0017h Bank 1 Region Information
X = Number of Sectors in Bank 1
59h B2h 0030h Bank 2 Region Information
X = Number of Sectors in Bank 2
5Ah B4h 0030h Bank 3 Region Information
X = Number of Sectors in Bank 3
5Bh B6h 0017h Bank 4 Region Information
X = Number of Sectors in Bank 4
February 9, 2005 Am29DL640H 23
COMMAND DEFINITIONS
Writing specific address and data commands or se-
quences into the command register initiates device op-
erations. Table 12 defines the valid register command
sequences. Writing incorrect address and data values
or writing them in the improper sequence may place
the device in an unknown state. A reset command is
then required to return the device to reading array
data.
All addresses are latched on the falling edge of WE#
or CE#, whichever happens later. All data is latched on
the rising edge of WE# or CE#, whichever happens
first. Refer to the AC Characteristics section for timing
diagrams.
Reading Array Data
The device is automatically set to reading array data
after device power-up. No commands are required to
retrieve data. Each bank is ready to read array data
after completing an Embedded Program or Embedded
Erase algorithm.
After the device accepts an Erase Suspend command,
the corresponding bank enters the erase-sus-
pend-read mode, after which the system can read
data from any non-erase-suspended sector within the
same bank. The system can read array data using the
standard read timing, except that if it reads at an ad-
dress within erase-suspended sectors, the device out-
puts status data. After completing a programming
operation in the Erase Suspend mode, the system
may once again read array data with the same excep-
tion. See the Erase Suspend/Erase Resume Com-
mands section for more information.
The system must issue the reset command to return a
bank to the read (or erase-suspend-read) mode if DQ5
goes high during an active program or erase opera-
tion, or if the bank is in the autoselect mode. See the
next section, Reset Command, for more information.
See also Requirements for Reading Array Data in the
Device Bus Operations section for more information.
The Read-Only Operations table provides the read pa-
rameters, and Figure 14 shows the timing diagram.
Reset Command
Writing the reset command resets the banks to the
read or erase-suspend-read mode. Address bits are
don’t cares for this command.
The reset command may be written between the se-
quence cycles in an erase command sequence before
erasing begins. This resets the bank to which the sys-
tem was writing to the read mode. Once erasure be-
gins, however, the device ignores reset commands
until the operation is complete.
The reset command may be written between the
sequence cycles in a program command sequence
before programming begins. This resets the bank to
which the system was writing to the read mode. If the
program command sequence is written to a bank that
is in the Erase Suspend mode, writing the reset
command returns that bank to the erase-sus-
pend-read mode. Once programming begins, however,
the device ignores reset commands until the operation
is complete.
The reset command may be written between the se-
quence cycles in an autoselect command sequence.
Once in the autoselect mode, the reset command
must be written to return to the read mode. If a bank
entered the autoselect mode while in the Erase Sus-
pend mode, writing the reset command returns that
bank to the erase-suspend-read mode.
If DQ5 goes high during a program or erase operation,
writing the reset command returns the banks to the
read mode (or erase-suspend-read mode if that bank
was in Erase Suspend).
Autoselect Command Sequence
The autoselect command sequence allows the host
system to access the manufacturer and device codes,
and determine whether or not a sector is protected.
The autoselect command sequence may be written to
an address within a bank that is either in the read or
erase-suspend-read mode. The autoselect command
may not be written while the device is actively pro-
gramming or erasing in another bank.
The autoselect command sequence is initiated by first
writing two unlock cycles. This is followed by a third
write cycle that contains the bank address and the au-
toselect command. The bank then enters the autose-
lect mode. The system may read any number of
autoselect codes without re initiating the command se-
quence.
Table 12 shows the address and data requirements.
To determine sector protection information, the system
must write to the appropriate bank address (BA) and
sector address (SA). Table 2 shows the address range
and bank number associated with each sector.
The system must write the reset command to return to
the read mode (or erase-suspend-read mode if the
bank was previously in Erase Suspend).
Enter Secured Silicon Sector/Exit Secured
Silicon Sector
Command Sequence
The Secured Silicon Sector region provides a secured
data area containing a random, sixteen-byte electronic
serial number (ESN). The system can access the Se-
24 Am29DL640H February 9, 2005
cured Silicon Sector region by issuing the three-cycle
Enter Secured Silicon Sector command sequence.
The device continues to access the Secured Silicon
Sector region until the system issues the four-cycle
Exit Secured Silicon Sector command sequence. The
Exit Secured Silicon Sector command sequence re-
turns the device to normal operation. The Secured Sil-
icon Sector is not accessible when the device is
executing an Embedded Program or embedded Erase
algorithm. Table 12 shows the address and data re-
quirements for both command sequences. See also
“Secured Silicon Sector Flash Memory Region” for fur-
ther information. Note that the ACC function and un-
lock bypass modes are not available when the
Secured Silicon Sector is enabled.
Byte/Word Program Command Sequence
The system may program the device by word or byte,
depending on the state of the BYTE# pin. Program-
ming is a four-bus-cycle operation. The program com-
mand sequence is initiated by writing two unlock write
cycles, followed by the program set-up command. The
program address and data are written next, which in
turn initiate the Embedded Program algorithm. The
system is not required to provide further controls or
timings. The device automatically provides internally
generated program pulses and verifies the pro-
grammed cell margin. Table 12 shows the address and
data requirements for the byte program command se-
quence.
When the Embedded Program algorithm is complete,
that bank then returns to the read mode and ad-
dresses are no longer latched. The system can deter-
mine the status of the program operation by using
DQ7, DQ6, or RY/BY#. Refer to the Write Operation
Status section for information on these status bits.
Any commands written to the device during the Em-
bedded Program Algorithm are ignored. Note that a
hardware reset immediately terminates the program
operation. The program command sequence should
be reinitiated once that bank has returned to the read
mode, to ensure data integrity. Note that the Secured
Silicon Sector, autoselect, and CFI functions are un-
available when a program operation is in progress.
Programming is allowed in any sequence and across
sector boundaries. A bit cannot be programmed
from “0” back to a “1.” Attempting to do so may
cause that bank to set DQ5 = 1, or cause the DQ7 and
DQ6 status bits to indicate the operation was success-
ful. However, a succeeding read will show that the
data is still “0.” Only erase operations can convert a “0”
to a “1.”
Unlock Bypass Command Sequence
The unlock bypass feature allows the system to pro-
gram bytes or words to a bank faster than using the
standard program command sequence. The unlock
bypass command sequence is initiated by first writing
two unlock cycles. This is followed by a third write
cycle containing the unlock bypass command, 20h.
That bank then enters the unlock bypass mode. A
two-cycle unlock bypass program command sequence
is all that is required to program in this mode. The first
cycle in this sequence contains the unlock bypass pro-
gram command, A0h; the second cycle contains the
program address and data. Additional data is pro-
grammed in the same manner. This mode dispenses
with the initial two unlock cycles required in the stan-
dard program command sequence, resulting in faster
total programming time. Table 12 shows the require-
ments for the command sequence.
During the unlock bypass mode, only the Unlock By-
pass Program and Unlock Bypass Reset commands
are valid. To exit the unlock bypass mode, the system
must issue the two-cycle unlock bypass reset com-
mand sequence. (See Table 12).
The device offers accelerated program operations
through the WP#/ACC pin. When the system asserts
VHH on the WP#/ACC pin, the device automatically en-
ters the Unlock Bypass mode. The system may then
write the two-cycle Unlock Bypass program command
sequence. The device uses the higher voltage on the
WP#/ACC pin to accelerate the operation. Note that
the WP#/ACC pin must not be at VHH for any operation
other than accelerated programming, or device dam-
age may result. In addition, the WP#/ACC pin must not
be left floating or unconnected; inconsistent behavior
of the device may result.
Figure 4 illustrates the algorithm for the program oper-
ation. Refer to the Erase and Program Operations
table in the AC Characteristics section for parameters,
and Figure 18 for timing diagrams.
February 9, 2005 Am29DL640H 25
Figure 4. Program Operation
Chip Erase Command Sequence
Chip erase is a six bus cycle operation. The chip erase
command sequence is initiated by writing two unlock
cycles, followed by a set-up command. Two additional
unlock write cycles are then followed by the chip erase
command, which in turn invokes the Embedded Erase
algorithm. The device does not require the system to
preprogram prior to erase. The Embedded Erase algo-
rithm automatically preprograms and verifies the entire
memory for an all zero data pattern prior to electrical
erase. The system is not required to provide any con-
trols or timings during these operations. Table 12
shows the address and data requirements for the chip
erase command sequence.
When the Embedded Erase algorithm is complete,
that bank returns to the read mode and addresses are
no longer latched. The system can determine the sta-
tus of the erase operation by using DQ7, DQ6, DQ2,
or RY/BY#. Refer to the Write Operation Status sec-
tion for information on these status bits.
Any commands written during the chip erase operation
are ignored. However, note that a hardware reset im-
mediately terminates the erase operation. If that oc-
curs, the chip erase command sequence should be
reinitiated once that bank has returned to reading
array data, to ensure data integrity. Note that the Se-
cured Silicon Sector, autoselect, and CFI functions are
unavailable when an erase operation is in progress.
Figure 5 illustrates the algorithm for the erase opera-
tion. Refer to the Erase and Program Operations ta-
bles in the AC Characteristics section for parameters,
and Figure 20 section for timing diagrams.
Sector Erase Command Sequence
Sector erase is a six bus cycle operation. The sector
erase command sequence is initiated by writing two
unlock cycles, followed by a set-up command. Two ad-
ditional unlock cycles are written, and are then fol-
lowed by the address of the sector to be erased, and
the sector erase command. Table 12 shows the ad-
dress and data requirements for the sector erase com-
mand sequence.
The device does not require the system to preprogram
prior to erase. The Embedded Erase algorithm auto-
matically programs and verifies the entire sector for an
all zero data pattern prior to electrical erase. The sys-
tem is not required to provide any controls or timings
during these operations.
After the command sequence is written, a sector erase
time-out of 80 µs occurs. During the time-out period,
additional sector addresses and sector erase com-
mands may be written. Loading the sector erase buffer
may be done in any sequence, and the number of sec-
tors may be from one sector to all sectors. The time
between these additional cycles must be less than 80
µs, otherwise erasure may begin. Any sector erase ad-
dress and command following the exceeded time-out
may or may not be accepted. It is recommended that
processor interrupts be disabled during this time to en-
sure all commands are accepted. The interrupts can
be re-enabled after the last Sector Erase command is
written. Any command other than Sector Erase or
Erase Suspend during the time-out period resets
that bank to the read mode. The system must rewrite
the command sequence and any additional addresses
and commands.
The system can monitor DQ3 to determine if the sec-
tor erase timer has timed out (See the section on DQ3:
Sector Erase Timer.). The time-out begins from the ris-
ing edge of the final WE# or CE# pulse (first rising
edge) in the command sequence.
When the Embedded Erase algorithm is complete, the
bank returns to reading array data and addresses are
no longer latched. Note that while the Embedded
Erase operation is in progress, the system can read
data from the non-erasing bank. The system can de-
termine the status of the erase operation by reading
DQ7, DQ6, DQ2, or RY/BY# in the erasing bank. Refer
START
Write Program
Command Sequence
Data Poll
from System
Verify Data? No
Yes
Last Address?
No
Yes
Programming
Completed
Increment Address
Embedded
Program
algorithm
in progress
Note: See Table 12 for program command sequence.
26 Am29DL640H February 9, 2005
to the Write Operation Status section for information
on these status bits.
Once the sector erase operation has begun, only the
Erase Suspend command is valid. All other com-
mands are ignored. However, note that a hardware
reset immediately terminates the erase operation. If
that occurs, the sector erase command sequence
should be reinitiated once that bank has returned to
reading array data, to ensure data integrity. Note that
the Secured Silicon Sector, autoselect, and CFI func-
tions are unavailable when an erase operation is in
progress.
Figure 5 illustrates the algorithm for the erase opera-
tion. Refer to the Erase and Program Operations ta-
bles in the AC Characteristics section for parameters,
and Figure 20 section for timing diagrams.
Figure 5. Erase Operation
Erase Suspend/Erase Resume
Commands
The Erase Suspend command, B0h, allows the sys-
tem to interrupt a sector erase operation and then read
data from, or program data to, any sector not selected
for erasure. The bank address is required when writing
this command. This command is valid only during the
sector erase operation, including the 80 µs time-out
period during the sector erase command sequence.
The Erase Suspend command is ignored if written dur-
ing the chip erase operation or Embedded Program
algorithm. The bank address must contain one of the
sectors currently selected for erase.
When the Erase Suspend command is written during
the sector erase operation, the device requires a max-
imum of 20 µs to suspend the erase operation. How-
ever, when the Erase Suspend command is written
during the sector erase time-out, the device immedi-
ately terminates the time-out period and suspends the
erase operation.
After the erase operation has been suspended, the
bank enters the erase-suspend-read mode. The sys-
tem can read data from or program data to any sector
not selected for erasure. (The device “erase sus-
pends” all sectors selected for erasure.) Reading at
any address within erase-suspended sectors pro-
duces status information on DQ7–DQ0. The system
can use DQ7, or DQ6 and DQ2 together, to determine
if a sector is actively erasing or is erase-suspended.
Refer to the Write Operation Status section for infor-
mation on these status bits.
After an erase-suspended program operation is com-
plete, the bank returns to the erase-suspend-read
mode. The system can determine the status of the
program operation using the DQ7 or DQ6 status bits,
just as in the standard Byte Program operation.
Refer to the Write Operation Status section for more
information.
In the erase-suspend-read mode, the system can also
issue the autoselect command sequence. The device
allows reading autoselect codes even at addresses
within erasing sectors, since the codes are not stored
in the memory array. When the device exits the au-
toselect mode, the device reverts to the Erase Sus-
pend mode, and is ready for another valid operation.
Refer to the Autoselect Mode and Autoselect Com-
mand Sequence sections for details.
To resume the sector erase operation, the system
must write the Erase Resume command. The bank
address of the erase-suspended bank is required
when writing this command. Further writes of the Re-
sume command are ignored. Another Erase Suspend
command can be written after the chip has resumed
erasing.
START
Write Erase
Command Sequence
(Notes 1, 2)
Data Poll to Erasing
Bank from System
Data = FFh?
No
Yes
Erasure Completed
Embedded
Erase
algorithm
in progress
Notes:
1. See Table 12 for erase command sequence.
2. See the section on DQ3 for information on the sector
erase timer.
February 9, 2005 Am29DL640H 27
Table 12. Am29DL640H Command Definitions
Legend:
X = Don’t care
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
PA = Address of the memory location to be programmed. Addresses
latch on the falling edge of the WE# or CE# pulse, whichever happens
later.
PD = Data to be programmed at location PA. Data latches on the rising
edge of WE# or CE# pulse, whichever happens first.
SA = Address of the sector to be verified (in autoselect mode) or
erased. Address bits A21–A12 uniquely select any sector. Refer to
Table 2 for information on sector addresses.
BA = Address of the bank that is being switched to autoselect mode, is
in bypass mode, or is being erased. A21–A19 uniquely select a bank.
Notes:
1. See Table 1 for description of bus operations.
2. All values are in hexadecimal.
3. Except for the read cycle and the fourth, fifth, and sixth cycle of
the autoselect command sequence, all bus cycles are write
cycles.
4. Data bits DQ15–DQ8 are don’t care in command sequences,
except for RD and PD.
5. Unless otherwise noted, address bits A21–A11 are don’t cares for
unlock and command cycles, unless SA or PA is required.
6. No unlock or command cycles required when bank is reading
array data.
7. The Reset command is required to return to the read mode (or to
the erase-suspend-read mode if previously in Erase Suspend)
when a bank is in the autoselect mode, or if DQ5 goes high (while
the bank is providing status information).
8. The fourth cycle of the autoselect command sequence is a read
cycle. The system must provide the bank address to obtain the
manufacturer ID, device ID, or Secured Silicon Sector factory
protect information. Data bits DQ15–DQ8 are don’t care. While
reading the autoselect addresses, the bank address must be the
same until a reset command is given. See the Autoselect
Command Sequence section for more information.
9. The device ID must be read across the fourth, fifth, and sixth
cycles.
10. The data is 81h for factory locked, 40h for customer locked, and
01h for not factory/customer locked.
11. The data is 00h for an unprotected sector/sector block and 01h for
a protected sector/sector block.
12. The Unlock Bypass command is required prior to the Unlock
Bypass Program command.
13. The Unlock Bypass Reset command is required to return to the
read mode when the bank is in the unlock bypass mode.
14. The system may read and program in non-erasing sectors, or
enter the autoselect mode, when in the Erase Suspend mode.
The Erase Suspend command is valid only during a sector erase
operation, and requires the bank address.
15. The Erase Resume command is valid only during the Erase
Suspend mode, and requires the bank address.
16. Command is valid when device is ready to read array data or when
device is in autoselect mode.
Command
Sequence
(Note 1)
Cycles
Bus Cycles (Notes 2–5)
First Second Third Fourth Fifth Sixth
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
Read (Note 6) 1 RA RD
Reset (Note 7) 1 XXX F0
Autoselect (Note 8)
Manufacturer ID Word 4555 AA 2AA 55 (BA)555 90 (BA)X00 01
Byte AAA 555 (BA)AAA
Device ID (Note 9) Word 6555 AA 2AA 55 (BA)555 90 (BA)X01 7E (BA)X0E 02 (BA)X0F 01
Byte AAA 555 (BA)AAA (BA)X02 (BA)X1C (BA)X1E
Secured Silicon Sector
Factory Protect (Note
10)
Word
4
555
AA
2AA
55
(BA)555
90
(BA)X03
81/01
Byte AAA 555 (BA)AAA (BA)X06
Sector/Sector Block
Protect Verify
(Note 11)
Word
4
555
AA
2AA
55
(BA)555
90
(SA)X02
00/01
Byte AAA 555 (BA)AAA (SA)X04
Enter Secured Silicon
Sector Region
Word 3555 AA 2AA 55 555 88
Byte AAA 555 AAA
Exit Secured Silicon Sector
Region
Word 4555 AA 2AA 55 555 90 XXX 00
Byte AAA 555 AAA
Program Word 4555 AA 2AA 55 555 A0 PA PD
Byte AAA 555 AAA
Unlock Bypass Word 3555 AA 2AA 55 555 20
Byte AAA 555 AAA
Unlock Bypass Program (Note 12) 2 XXX A0 PA PD
Unlock Bypass Reset (Note 13) 2 XXX 90 XXX 00
Chip Erase Word 6555 AA 2AA 55 555 80 555 AA 2AA 55 555 10
Byte AAA 555 AAA AAA 555 AAA
Sector Erase Word 6555 AA 2AA 55 555 80 555 AA 2AA 55 SA 30
Byte AAA 555 AAA AAA 555
Erase Suspend (Note 14) 1 BA B0
Erase Resume (Note 15) 1 BA 30
CFI Query (Note 16) Word 155 98
Byte AA
28 Am29DL640H February 9, 2005
WRITE OPERATION STATUS
The device provides several bits to determine the status of a
program or erase operation: DQ2, DQ3, DQ5, DQ6, and
DQ7. Table 13 and the following subsections describe the
function of these bits. DQ7 and DQ6 each offer a method for
determining whether a program or erase operation is com-
plete or in progress. The device also provides a hard-
ware-based output signal, RY/BY#, to determine whether
an Embedded Program or Erase operation is in progress or
has been completed.
DQ7: Data# Polling
The Data# Polling bit, DQ7, indicates to the host system
whether an Embedded Program or Erase algorithm is in
progress or completed, or whether a bank is in Erase Sus-
pend. Data# Polling is valid after the rising edge of the final
WE# pulse in the command sequence.
During the Embedded Program algorithm, the device out-
puts on DQ7 the complement of the datum programmed to
DQ7. This DQ7 status also applies to programming during
Erase Suspend. When the Embedded Program algorithm is
complete, the device outputs the datum programmed to
DQ7. The system must provide the program address to
read valid status information on DQ7. If a program address
falls within a protected sector, Data# Polling on DQ7 is ac-
tive for approximately 1 µs, then that bank returns to the
read mode.
During the Embedded Erase algorithm, Data# Polling
produces a “0” on DQ7. When the Embedded Erase
algorithm is complete, or if the bank enters the Erase
Suspend mode, Data# Polling produces a “1” on DQ7.
The system must provide an address within any of the
sectors selected for erasure to read valid status infor-
mation on DQ7.
After an erase command sequence is written, if all
sectors selected for erasing are protected, Data# Poll-
ing on DQ7 is active for approximately 100 µs, then the
bank returns to the read mode. If not all selected sec-
tors are protected, the Embedded Erase algorithm
erases the unprotected sectors, and ignores the se-
lected sectors that are protected. However, if the sys-
tem reads DQ7 at an address within a protected
sector, the status may not be valid.
When the system detects DQ7 has changed from the
complement to true data, it can read valid data at
DQ15–DQ0 (or DQ7–DQ0 for x8-only device) on the
following read cycles. Just prior to the completion of an
Embedded Program or Erase operation, DQ7 may
change asynchronously with DQ15–DQ8 (DQ7–DQ0
for x8-only device) while Output Enable (OE#) is as-
serted low. That is, the device may change from pro-
viding status information to valid data on DQ7.
Depending on when the system samples the DQ7 out-
put, it may read the status or valid data. Even if the de-
vice has completed the program or erase operation
and DQ7 has valid data, the data outputs on
DQ15–DQ0 may be still invalid. Valid data on
DQ15–DQ0 (or DQ7–DQ0 for x8-only device) will ap-
pear on successive read cycles.
Table 13 shows the outputs for Data# Polling on DQ7.
Figure 6 shows the Data# Polling algorithm. Figure 22
in the AC Characteristics section shows the Data#
Polling timing diagram.
Figure 6. Data# Polling Algorithm
DQ7 = Data? Yes
No
No
DQ5 = 1?
No
Yes
Yes
FAIL PASS
Read DQ7–DQ0
Addr = VA
Read DQ7–DQ0
Addr = VA
DQ7 = Data?
START
Notes:
1. VA = Valid address for programming. During a sector
erase operation, a valid address is any sector address
within the sector being erased. During chip erase, a
valid address is any non-protected sector address.
2. DQ7 should be rechecked even if DQ5 = “1” because
DQ7 may change simultaneously with DQ5.
February 9, 2005 Am29DL640H 29
RY/BY#: Ready/Busy#
The RY/BY# is a dedicated, open-drain output pin
which indicates whether an Embedded Algorithm is in
progress or complete. The RY/BY# status is valid after
the rising edge of the final WE# pulse in the command
sequence. Since RY/BY# is an open-drain output, sev-
eral RY/BY# pins can be tied together in parallel with a
pull-up resistor to VCC.
If the output is low (Busy), the device is actively eras-
ing or programming. (This includes programming in
the Erase Suspend mode.) If the output is high
(Ready), the device is in the read mode, the standby
mode, or one of the banks is in the erase-sus-
pend-read mode.
Table 13 shows the outputs for RY/BY#.
DQ6: Toggle Bit I
Toggle Bit I on DQ6 indicates whether an Embedded
Program or Erase algorithm is in progress or com-
plete, or whether the device has entered the Erase
Suspend mode. Toggle Bit I may be read at any ad-
dress, and is valid after the rising edge of the final
WE# pulse in the command sequence (prior to the
program or erase operation), and during the sector
erase time-out.
During an Embedded Program or Erase algorithm op-
eration, successive read cycles to any address cause
DQ6 to toggle. The system may use either OE# or
CE# to control the read cycles. When the operation is
complete, DQ6 stops toggling.
After an erase command sequence is written, if all
sectors selected for erasing are protected, DQ6 tog-
gles for approximately 100 µs, then returns to reading
array data. If not all selected sectors are protected, the
Embedded Erase algorithm erases the unprotected
sectors, and ignores the selected sectors that are pro-
tected.
The system can use DQ6 and DQ2 together to deter-
mine whether a sector is actively erasing or is
erase-suspended. When the device is actively erasing
(that is, the Embedded Erase algorithm is in progress),
DQ6 toggles. When the device enters the Erase Sus-
pend mode, DQ6 stops toggling. However, the system
must also use DQ2 to determine which sectors are
erasing or erase-suspended. Alternatively, the system
can use DQ7 (see the subsection on DQ7: Data# Poll-
ing).
If a program address falls within a protected sector,
DQ6 toggles for approximately 1 µs after the program
command sequence is written, then returns to reading
array data.
DQ6 also toggles during the erase-suspend-program
mode, and stops toggling once the Embedded Pro-
gram algorithm is complete.
Table 13 shows the outputs for Toggle Bit I on DQ6.
Figure 7 shows the toggle bit algorithm. Figure 23 in
the “AC Characteristics” section shows the toggle bit
timing diagrams. Figure 24 shows the differences be-
tween DQ2 and DQ6 in graphical form. See also the
subsection on DQ2: Toggle Bit II.
Figure 7. Toggle Bit Algorithm
START
No
Yes
Yes
DQ5 = 1?
No
Yes
Toggle Bit
= Toggle?
No
Program/Erase
Operation Not
Complete, Write
Reset Command
Program/Erase
Operation Complete
Toggle Bit
= Toggle?
Read Byte Twice
(DQ7–DQ0)
Address = VA
Read Byte
(DQ7–DQ0)
Address =VA
Read Byte
(DQ7–DQ0)
Address =VA
Note: The system should recheck the toggle bit even if DQ5
= “1” because the toggle bit may stop toggling as DQ5
changes to “1.” See the subsections on DQ6 and DQ2 for
more information.
30 Am29DL640H February 9, 2005
DQ2: Toggle Bit II
The “Toggle Bit II” on DQ2, when used with DQ6, indi-
cates whether a particular sector is actively erasing
(that is, the Embedded Erase algorithm is in progress),
or whether that sector is erase-suspended. Toggle Bit
II is valid after the rising edge of the final WE# pulse in
the command sequence.
DQ2 toggles when the system reads at addresses
within those sectors that have been selected for era-
sure. (The system may use either OE# or CE# to con-
trol the read cycles.) But DQ2 cannot distinguish
whether the sector is actively erasing or is erase-sus-
pended. DQ6, by comparison, indicates whether the
device is actively erasing, or is in Erase Suspend, but
cannot distinguish which sectors are selected for era-
sure. Thus, both status bits are required for sector and
mode information. Refer to Table 13 to compare out-
puts for DQ2 and DQ6.
Figure 7 shows the toggle bit algorithm in flowchart
form, and the section “DQ2: Toggle Bit II” explains the
algorithm. See also the DQ6: Toggle Bit I subsection.
Figure 23 shows the toggle bit timing diagram. Figure
24 shows the differences between DQ2 and DQ6 in
graphical form.
Reading Toggle Bits DQ6/DQ2
Refer to Figure 7 for the following discussion. When-
ever the system initially begins reading toggle bit sta-
tus, it must read DQ15–DQ0 (or DQ7–DQ0 for x8-only
device) at least twice in a row to determine whether a
toggle bit is toggling. Typically, the system would note
and store the value of the toggle bit after the first read.
After the second read, the system would compare the
new value of the toggle bit with the first. If the toggle bit
is not toggling, the device has completed the program
or erase operation. The system can read array data on
DQ15–DQ0 (or DQ7–DQ0 for x8-only device) on the
following read cycle.
However, if after the initial two read cycles, the system
determines that the toggle bit is still toggling, the sys-
tem also should note whether the value of DQ5 is high
(see the section on DQ5). If it is, the system should
then determine again whether the toggle bit is tog-
gling, since the toggle bit may have stopped toggling
just as DQ5 went high. If the toggle bit is no longer
toggling, the device has successfully completed the
program or erase operation. If it is still toggling, the de-
vice did not completed the operation successfully, and
the system must write the reset command to return to
reading array data.
The remaining scenario is that the system initially de-
termines that the toggle bit is toggling and DQ5 has
not gone high. The system may continue to monitor
the toggle bit and DQ5 through successive read cy-
cles, determining the status as described in the previ-
ous paragraph. Alternatively, it may choose to perform
other system tasks. In this case, the system must start
at the beginning of the algorithm when it returns to de-
termine the status of the operation (top of Figure 7).
DQ5: Exceeded Timing Limits
DQ5 indicates whether the program or erase time has
exceeded a specified internal pulse count limit. Under these
conditions DQ5 produces a “1,” indicating that the program
or erase cycle was not successfully completed.
The device may output a “1” on DQ5 if the system tries
to program a “1” to a location that was previously pro-
grammed to “0.” Only an erase operation can
change a “0” back to a “1.” Under this condition, the
device halts the operation, and when the timing limit
has been exceeded, DQ5 produces a “1.”
Under both these conditions, the system must write
the reset command to return to the read mode (or to
the erase-suspend-read mode if a bank was previ-
ously in the erase-suspend-program mode).
DQ3: Sector Erase Timer
After writing a sector erase command sequence, the
system may read DQ3 to determine whether or not
erasure has begun. (The sector erase timer does not
apply to the chip erase command.) If additional
sectors are selected for erasure, the entire time-out
also applies after each additional sector erase com-
mand. When the time-out period is complete, DQ3
switches from a “0” to a “1.” If the time between addi-
tional sector erase commands from the system can be
assumed to be less than 50 µs, the system need not
monitor DQ3. See also the Sector Erase Command
Sequence section.
After the sector erase command is written, the system
should read the status of DQ7 (Data# Polling) or DQ6
(Toggle Bit I) to ensure that the device has accepted
the command sequence, and then read DQ3. If DQ3 is
“1,” the Embedded Erase algorithm has begun; all fur-
ther commands (except Erase Suspend) are ignored
until the erase operation is complete. If DQ3 is “0,” the
device will accept additional sector erase commands.
To ensure the command has been accepted, the sys-
tem software should check the status of DQ3 prior to
and following each subsequent sector erase com-
mand. If DQ3 is high on the second status check, the
last command might not have been accepted.
Table 13 shows the status of DQ3 relative to the other
status bits.
February 9, 2005 Am29DL640H 31
Table 13. Write Operation Status
Notes:
1. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation has exceeded the maximum timing limits.
Refer to the section on DQ5 for more information.
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further
details.
3. When reading write operation status bits, the system must always provide the bank address where the Embedded Algorithm
is in progress. The device outputs array data if the system addresses a non-busy bank.
Status
DQ7
(Note 2) DQ6
DQ5
(Note 1) DQ3
DQ2
(Note 2) RY/BY#
Standard
Mode
Embedded Program Algorithm DQ7# Toggle 0 N/A No toggle 0
Embedded Erase Algorithm 0 Toggle 0 1 Toggle 0
Erase
Suspend
Mode
Erase-Suspend-
Read
Erase
Suspended Sector 1 No toggle 0 N/A Toggle 1
Non-Erase
Suspended Sector Data Data Data Data Data 1
Erase-Suspend-Program DQ7# Toggle 0 N/A N/A 0
32 Am29DL640H February 9, 2005
ABSOLUTE MAXIMUM RATINGS
Storage Temperature
Plastic Packages . . . . . . . . . . . . . . . –65°C to +150°C
Ambient Temperature
with Power Applied. . . . . . . . . . . . . . –65°C to +125°C
Voltage with Respect to Ground
VCC (Note 1) . . . . . . . . . . . . . . . . . –0.5 V to +4.0 V
A9, OE#, and RESET#
(Note 2) . . . . . . . . . . . . . . . . . . . .–0.5 V to +12.5 V
WP#/ACC . . . . . . . . . . . . . . . . . .–0.5 V to +10.5 V
All other pins (Note 1) . . . . . . –0.5 V to VCC +0.5 V
Output Short Circuit Current (Note 3) . . . . . . 200 mA
Notes:
1. Minimum DC voltage on input or I/O pins is –0.5 V.
During voltage transitions, input or I/O pins may
overshoot VSS to –2.0 V for periods of up to 20 ns.
Maximum DC voltage on input or I/O pins is VCC +0.5 V.
See Figure 8. During voltage transitions, input or I/O pins
may overshoot to VCC +2.0 V for periods up to 20 ns. See
Figure 9.
2. Minimum DC input voltage on pins A9, OE#, RESET#,
and WP#/ACC is –0.5 V. During voltage transitions, A9,
OE#, WP#/ACC, and RESET# may overshoot VSS to
–2.0 V for periods of up to 20 ns. See Figure 8. Maximum
DC input voltage on pin A9 is +12.5 V which may
overshoot to +14.0 V for periods up to 20 ns. Maximum
DC input voltage on WP#/ACC is +9.5 V which may
overshoot to +12.0 V for periods up to 20 ns.
3. No more than one output may be shorted to ground at a
time. Duration of the short circuit should not be greater
than one second.
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device. This
is a stress rating only; functional operation of the device at
these or any other conditions above those indicated in the
operational sections of this data sheet is not implied.
Exposure of the device to absolute maximum rating
conditions for extended periods may affect device reliability.
Figure 8. Maximum Negative
Overshoot Waveform
Figure 9. Maximum Positive
Overshoot Waveform
OPERATING RANGES
Industrial (I) Devices
Ambient Temperature (TA) . . . . . . . . . –40°C to +85°C
Extended (E) Devices
Ambient Temperature (TA) . . . . . . . . –55°C to +125°C
VCC Supply Voltages
VCC for standard voltage range . . . . . . . 2.7 V to 3.6 V
Operating ranges define those limits between which the
functionality of the device is guaranteed.
20 ns
20 ns
+0.8 V
–0.5 V
20 ns
–2.0 V
20 ns
20 ns
VCC
+2.0 V
VCC
+0.5 V
20 ns
2.0 V
February 9, 2005 Am29DL640H 33
DC CHARACTERISTICS
CMOS Compatible
Notes:
1. The ICC current listed is typically less than 2 mA/MHz, with OE# at VIH.
2. Maximum ICC specifications are tested with VCC = VCCmax.
3. ICC active while Embedded Erase or Embedded Program is in progress.
4. Automatic sleep mode enables the low power mode when addresses remain stable for tACC + 30 ns. Typical sleep mode current is
200 nA.
5. Not 100% tested.
Parameter
Symbol Parameter Description Test Conditions Min Typ Max Unit
ILI Input Load Current VIN = VSS to VCC,
VCC = VCC max
±1.0 µA
ILIT
A9, OE# and RESET# Input Load
Current
VCC = VCC max, OE# = VIH; A9 or
OE# or RESET# = 12.5 V 35 µA
ILO Output Leakage Current VOUT = VSS to VCC,
VCC = VCC max, OE# = VIH
±1.0 µA
ILR Reset Leakage Current VCC = VCC max; RESET# = 12.5 V 35 µA
ICC1
VCC Active Read Current
(Notes 1, 2)
CE# = VIL, OE# = VIH,
Byte Mode
5 MHz 10 16
mA
1 MHz 2 4
CE# = VIL, OE# = VIH,
Word Mode
5 MHz 10 16
1 MHz 2 4
ICC2 VCC Active Write Current (Notes 2, 3) CE# = VIL, OE# = VIH, WE# = VIL 15 30 mA
ICC3 VCC Standby Current (Note 2) CE#, RESET# = VCC ± 0.3 V 0.2 5 µA
ICC4 VCC Reset Current (Note 2) RESET# = VSS ± 0.3 V 0.2 5 µA
ICC5 Automatic Sleep Mode (Notes 2, 4) VIH = VCC ± 0.3 V;
VIL = VSS ± 0.3 V 0.2 5 µA
ICC6
VCC Active Read-While-Program
Current (Notes 1, 2) CE# = VIL, OE# = VIH
Byte 21 45 mA
Word 21 45
ICC7
VCC Active Read-While-Erase
Current (Notes 1, 2) CE# = VIL, OE# = VIH
Byte 21 45 mA
Word 21 45
ICC8
VCC Active
Program-While-Erase-Suspended
Current (Notes 2, 5)
CE# = VIL, OE# = VIH 17 35 mA
VIL Input Low Voltage –0.5 0.8 V
VIH Input High Voltage 0.7 x VCC VCC + 0.3 V
VHH
Voltage for WP#/ACC Sector
Protect/Unprotect and Program
Acceleration
VCC = 3.0 V ± 10% 8.5 9.5 V
VID
Voltage for Autoselect and Temporary
Sector Unprotect VCC = 3.0 V ± 10% 11.5 12.5 V
VOL Output Low Voltage IOL = 2.0 mA, VCC = VCC min 0.45 V
VOH1 Output High Voltage IOH = –2.0 mA, VCC = VCC min 0.85 VCC V
VOH2 IOH = –100 µA, VCC = VCC min V
CC–0.4
VLKO Low VCC Lock-Out Voltage (Note 5) 2.3 2.5 V
34 Am29DL640H February 9, 2005
DC CHARACTERISTICS
Zero-Power Flash
Note: Addresses are switching at 1 MHz
Figure 10. ICC1 Current vs. Time (Showing Active and Automatic Sleep Currents)
25
20
15
10
5
0
0 500 1000 1500 2000 2500 3000 3500 4000
Supply Current in mA
Time in ns
10
8
2
0
12345
Frequency in MHz
Supply Current in mA
Note: T = 25 °C
Figure 11. Typical ICC1 vs. Frequency
2.7 V
3.6 V
4
6
12
February 9, 2005 Am29DL640H 35
TEST CONDITIONS
Table 14. Test Specifications
KEY TO SWITCHING WAVEFORMS
2.7 kΩ
CL6.2 kΩ
3.3 V
Device
Under
Te s t
Note: Diodes are IN3064 or equivalent
Figure 12. Test Setup
Test Condition 55, 60 70, 90 Unit
Output Load 1 TTL gate
Output Load Capacitance, CL
(including jig capacitance) 30 100 pF
Input Rise and Fall Times 5 ns
Input Pulse Levels 0.0–3.0 V
Input timing measurement
reference levels 1.5 V
Output timing measurement
reference levels 1.5 V
WAVEFORM INPUTS OUTPUTS
Steady
Changing from H to L
Changing from L to H
Don’t Care, Any Change Permitted Changing, State Unknown
Does Not Apply Center Line is High Impedance State (High Z)
3.0 V
0.0 V
1.5 V 1.5 V OutputMeasurement LevelInput
Figure 13. Input Waveforms and Measurement Levels
36 Am29DL640H February 9, 2005
AC CHARACTERISTICS
Read-Only Operations
Notes:
1. Not 100% tested.
2. See Figure 12 and Table 14 for test specifications
3. Measurements performed by placing a 50 ohm termination on the data pin with a bias of VCC/2. The time from OE# high to
the data bus driven to VCC/2 is taken as tDF
.
Parameter
Description Test Setup
Speed Options
JEDEC Std. 55 60 70 90 Unit
tAVAV tRC Read Cycle Time (Note 1) Min 55 60 70 90 ns
tAVQV tACC Address to Output Delay CE#,
OE# = VIL
Max55607090ns
tELQV tCE Chip Enable to Output Delay OE# = VIL Max55607090ns
tGLQV tOE Output Enable to Output Delay Max 25 30 35 ns
tEHQZ tDF Chip Enable to Output High Z (Notes 1, 3) Max 16 ns
tGHQZ tDF Output Enable to Output High Z (Notes 1, 3) Max 16 ns
tAXQX tOH
Output Hold Time From Addresses, CE# or
OE#, Whichever Occurs First Min 0 ns
tOEH
Output Enable Hold Time
(Note 1)
Read Min 0 ns
Toggle and
Data# Polling Min 5 10 ns
tOH
tCE
Outputs
WE#
Addresses
CE#
OE#
HIGH Z
Output Valid
HIGH Z
Addresses Stable
tRC
tACC
tOEH
tRH
tOE
tRH
0 V
RY/BY#
RESET#
tDF
Figure 14. Read Operation Timings
February 9, 2005 Am29DL640H 37
AC CHARACTERISTICS
Hardware Reset (RESET#)
Note: Not 100% tested.
Parameter
Description All Speed Options UnitJEDEC Std
tReady
RESET# Pin Low (During Embedded Algorithms)
to Read Mode (See Note) Max 20 µs
tReady
RESET# Pin Low (NOT During Embedded
Algorithms) to Read Mode (See Note) Max 500 ns
tRP RESET# Pulse Width Min 500 ns
tRH Reset High Time Before Read (See Note) Min 50 ns
tRPD RESET# Low to Standby Mode Min 20 µs
tRB RY/BY# Recovery Time Min 0 ns
RESET#
RY/BY#
RY/BY#
tRP
tReady
Reset Timings NOT during Embedded Algorithms
tReady
CE#, OE#
tRH
CE#, OE#
Reset Timings during Embedded Algorithms
RESET#
tRP
tRB
Figure 15. Reset Timings
38 Am29DL640H February 9, 2005
AC CHARACTERISTICS
Word/Byte Configuration (BYTE#)
Parameter Speed Options
JEDEC Std.Description 55607090Unit
tELFL/tELFH CE# to BYTE# Switching Low or High Max 5 ns
tFLQZ BYTE# Switching Low to Output HIGH Z Max 16 ns
tFHQV BYTE# Switching High to Output Active Min 55 60 70 90 ns
DQ15
Output
Data Output
(DQ7–DQ0)
CE#
OE#
BYTE#
tELFL
DQ14–DQ0 Data Output
(DQ14–DQ0)
DQ15/A-1 Address
Input
tFLQZ
BYTE#
Switching
from word
to byte
mode
DQ15
Output
Data Output
(DQ7–DQ0)
BYTE#
tELFH
DQ14–DQ0 Data Output
(DQ14–DQ0)
DQ15/A-1 Address
Input
tFHQV
BYTE#
Switching
from byte
to word
mode
Figure 16. BYTE# Timings for Read Operations
Note: Refer to the Erase/Program Operations table for tAS and tAH specifications.
Figure 17. BYTE# Timings for Write Operations
CE#
WE#
BYTE#
The falling edge of the last WE# signal
tHOLD (tAH)
tSET
(tAS)
February 9, 2005 Am29DL640H 39
AC CHARACTERISTICS
Erase and Program Operations
Notes:
1. Not 100% tested.
2. See the “Erase And Programming Performance” section for more information.
Parameter Speed Options
JEDEC Std Description 55 60 70 90 Unit
tAVAV tWC Write Cycle Time (Note 1) Min 55 60 70 90 ns
tAVWL tAS Address Setup Time Min 0 ns
tASO
Address Setup Time to OE# low during toggle bit
polling Min 15 ns
tWLAX tAH Address Hold Time Min 30 35 40 45 ns
tAHT
Address Hold Time From CE# or OE# high
during toggle bit polling Min 0 ns
tDVWH tDS Data Setup Time Min 30 35 40 45 ns
tWHDX tDH Data Hold Time Min 0 ns
tOEPH Output Enable High during toggle bit polling Min 20 ns
tGHWL tGHWL
Read Recovery Time Before Write
(OE# High to WE# Low) Min 0 ns
tELWL tCS CE# Setup Time Min 0 ns
tWHEH tCH CE# Hold Time Min 0 ns
tWLWH tWP Write Pulse Width Min 25 25 30 35 ns
tWHDL tWPH Write Pulse Width High Min 25 25 30 30 ns
tSR/W Latency Between Read and Write Operations Min 0 ns
tWHWH1 tWHWH1 Programming Operation (Note 2)
Byte Typ 5
µs
Word Typ 7
tWHWH1 tWHWH1
Accelerated Programming Operation,
Word or Byte (Note 2) Ty p 4 µ s
tWHWH2 tWHWH2 Sector Erase Operation (Note 2) Typ 0.4 sec
tVCS VCC Setup Time (Note 1) Min 50 µs
tRB Write Recovery Time from RY/BY# Min 0 ns
tBUSY Program/Erase Valid to RY/BY# Delay Max 90 ns
40 Am29DL640H February 9, 2005
AC CHARACTERISTICS
OE#
WE#
CE#
VCC
Data
Addresses
tDS
tAH
tDH
tWP
PD
tWHWH1
tWC tAS
tWPH
tVCS
555h PA PA
Read Status Data (last two cycles)
A0h
tCS
Status DOUT
Program Command Sequence (last two cycles)
RY/BY#
tRB
tBUSY
tCH
PA
N
otes:
1
. PA = program address, PD = program data, DOUT is the true data at the program address.
2
. Illustration shows device in word mode.
Figure 18. Program Operation Timings
WP#/ACC
tVHH
VHH
VIL or VIH VIL or VIH
tVHH
Figure 19. Accelerated Program Timing Diagram
February 9, 2005 Am29DL640H 41
AC CHARACTERISTICS
OE#
CE#
Addresses
VCC
WE#
Data
2AAh SA
tAH
tWP
tWC tAS
tWPH
555h for chip erase
10 for Chip Erase
30h
tDS
tVCS
tCS
tDH
55h
tCH
In
Progress Complete
tWHWH2
VA
VA
Erase Command Sequence (last two cycles) Read Status Data
RY/BY#
tRB
tBUSY
Notes:
1. SA = sector address (for Sector Erase), VA = Valid Address for reading status data (see “Write Operation Status”.
2
. These waveforms are for the word mode.
Figure 20. Chip/Sector Erase Operation Timings
42 Am29DL640H February 9, 2005
AC CHARACTERISTICS
OE#
CE#
WE#
Addresses
t
OH
Data Valid
In
Valid
In
Valid PA Valid RA
t
WC
t
WPH
t
AH
t
WP
t
DS
t
DH
t
RC
t
CE
Valid
Out
t
OE
t
ACC
t
OEH
t
GHWL
t
DF
Valid
In
CE# or CE2# Controlled Write CyclesWE# Controlled Write Cycle
Valid PA Valid PA
t
CP
t
CPH
t
WC
t
WC
Read Cycle
t
SR/W
Figure 21. Back-to-back Read/Write Cycle Timings
WE#
CE#
OE#
High Z
t
OE
High Z
DQ7
DQ0–DQ6
RY/BY#
t
BUSY
Complement True
Addresses VA
t
OEH
t
CE
t
CH
t
OH
t
DF
VA VA
Status Data
Complement
Status Data True
Valid Data
Valid Data
t
ACC
t
RC
Note: VA = Valid address. Illustration shows first status cycle after command sequence, last status read cycle, and array data
read cycle.
Figure 22. Data# Polling Timings (During Embedded Algorithms)
February 9, 2005 Am29DL640H 43
AC CHARACTERISTICS
OE#
CE#
WE#
Addresses
tOEH
tDH
tAHT
tASO
tOEPH
tOE
Valid Data
(first read) (second read) (stops toggling)
tCEPH
tAHT
tAS
DQ6/DQ2 Valid Data
Valid
Status
Valid
Status
Valid
Status
RY/BY#
Note: VA = Valid address; not required for DQ6. Illustration shows first two status cycle after command sequence, last status read
cycle, and array data read cycle
Figure 23. Toggle Bit Timings (During Embedded Algorithms)
Note: DQ2 toggles only when read at an address within an erase-suspended sector. The system may use OE# or CE# to toggle
DQ2 and DQ6.
Figure 24. DQ2 vs. DQ6
Enter
Erase
Erase
Erase
Enter Erase
Suspend Program
Erase Suspend
Read Erase Suspend
Read
Erase
WE#
DQ6
DQ2
Erase
Complete
Erase
Suspend
Suspend
Program
Resume
Embedded
Erasing
44 Am29DL640H February 9, 2005
AC CHARACTERISTICS
Temporary Sector Unprotect
Note: Not 100% tested.
Parameter
All Speed OptionsJEDEC Std Description Unit
tVIDR VID Rise and Fall Time (See Note) Min 500 ns
tVHH VHH Rise and Fall Time (See Note) Min 250 ns
tRSP
RESET# Setup Time for Temporary Sector
Unprotect Min 4 µs
tRRB
RESET# Hold Time from RY/BY# High for
Temporary Sector Unprotect Min 4 µs
RESET#
tVIDR
VID
VSS, VIL,
or VIH
VID
VSS, VIL,
or VIH
CE#
WE#
RY/BY#
tVIDR
tRSP
Program or Erase Command Sequence
tRRB
Figure 25. Temporary Sector Unprotect Timing Diagram
February 9, 2005 Am29DL640H 45
AC CHARACTERISTICS
Sector Group Protect: 150 µs
Sector Group Unprotect: 15 ms
1 µs
RESET#
SA, A6,
A1, A0
Data
CE#
WE#
OE#
60h 60h 40h
Valid* Valid* Valid*
Status
Sector Group Protect/Unprotect Verify
VID
VIH
* For sector protect, A6 = 0, A1 = 1, A0 = 0. For sector unprotect, A6 = 1, A1 = 1, A0 = 0.
Figure 26. Sector/Sector Block Protect and
Unprotect Timing Diagram
46 Am29DL640H February 9, 2005
AC CHARACTERISTICS
Alternate CE# Controlled Erase and Program Operations
Notes:
1. Not 100% tested.
2. See the “Erase And Programming Performance” section for more information.
Parameter Speed Options
JEDEC Std. Description 55 60 70 90 Unit
tAVAV tWC Write Cycle Time (Note 1) Min 55 55 70 90 ns
tAVWL tAS Address Setup Time Min 0 ns
tELAX tAH Address Hold Time Min 30 35 40 45 ns
tDVEH tDS Data Setup Time Min 30 35 40 45 ns
tEHDX tDH Data Hold Time Min 0 ns
tGHEL tGHEL
Read Recovery Time Before Write
(OE# High to WE# Low) Min 0 ns
tWLEL tWS WE# Setup Time Min 0 ns
tEHWH tWH WE# Hold Time Min 0 ns
tELEH tCP CE# Pulse Width Min 25 25 40 45 ns
tEHEL tCPH CE# Pulse Width High Min 25 25 30 ns
tWHWH1 tWHWH1
Programming Operation
(Note 2)
Byte Typ 5
µs
Word Typ 7
tWHWH1 tWHWH1
Accelerated Programming Operation,
Word or Byte (Note 2) Ty p 4 µ s
tWHWH2 tWHWH2 Sector Erase Operation (Note 2) Typ 0.4 sec
February 9, 2005 Am29DL640H 47
AC CHARACTERISTICS
tGHEL
tWS
OE#
CE#
WE#
RESET#
tDS
Data
tAH
Addresses
tDH
tCP
DQ7# D
OUT
tWC tAS
tCPH
PA
Data# Polling
A0 for program
55 for erase
tRH
tWHWH1 or 2
RY/BY#
tWH
PD for program
30 for sector erase
10 for chip erase
555 for program
2AA for erase
PA for program
SA for sector erase
555 for chip erase
tBUSY
Notes:
1. Figure indicates last two bus cycles of a program or erase operation.
2. PA = program address, SA = sector address, PD = program data.
3. DQ7# is the complement of the data written to the device. DOUT is the data written to the device.
4. Waveforms are for the word mode.
Figure 27. Alternate CE# Controlled Write (Erase/Program) Operation Timings
48 Am29DL640H February 9, 2005
ERASE AND PROGRAMMING PERFORMANCE
Notes:
1. Typical program and erase times assume the following conditions: 25°C, 3.0 V VCC, 1,000,000 cycles. Additionally, programming typicals
assume checkerboard pattern.
2. Under worst case conditions of 90°C, VCC = 2.7 V, 1,000,000 cycles.
3. The typical chip programming time is considerably less than the maximum chip programming time listed, since most bytes program faster than the
maximum program times listed.
4. In the pre-programming step of the Embedded Erase algorithm, all bytes are programmed to 00h before erasure.
5. System-level overhead is the time required to execute the two- or four-bus-cycle sequence for the program command. See Table 12 for further
information on command definitions.
6. The device has a minimum erase and program cycle endurance of 1,000,000 cycles.
LATCHUP CHARACTERISTICS
Note: Includes all pins except VCC. Test conditions: VCC = 3.0 V, one pin at a time.
TSOP & BGA PIN CAPACITANCE
Notes:
1. Sampled, not 100% tested.
2. Test conditions TA = 25°C, f = 1.0 MHz.
DATA RETENTION
Parameter Typ (Note 1) Max (Note 2) Unit Comments
Sector Erase Time 0.4 5 sec Excludes 00h programming
prior to erasure (Note 4)
Chip Erase Time 56 sec
Byte Program Time 5 150 µs
Excludes system level
overhead (Note 5)
Accelerated Byte/Word Program Time 4 120 µs
Accelerated Chip Programming Time 10 30 sec
Word Program Time 7 210 µs
Chip Program Time
(Note 3)
Byte Mode 42 126
sec
Word Mode 28 84
Description Min Max
Input voltage with respect to VSS on all pins except I/O pins
(including A9, OE#, and RESET#) –1.0 V 12.5 V
Input voltage with respect to VSS on all I/O pins –1.0 V VCC + 1.0 V
VCC Current –100 mA +100 mA
Parameter Symbol Parameter Description Test Setup Typ Max Unit
CIN Input Capacitance VIN = 0
TSOP 6 7.5 pF
Fine-pitch BGA 4.2 5.0 pF
COUT Output Capacitance VOUT = 0
TSOP 8.5 12 pF
Fine-pitch BGA 5.4 6.5 pF
CIN2 Control Pin Capacitance VIN = 0
TSOP 7.5 9 pF
Fine-pitch BGA 3.9 4.7 pF
Parameter Description Test Conditions Min Unit
Minimum Pattern Data Retention Time
150°C 10 Years
125°C 20 Years
February 9, 2005 Am29DL640H 49
PHYSICAL DIMENSIONS
FBE063—63-Ball Fine-Pitch Ball Grid Array (fBGA) 12x11mmpackage
Dwg rev AF; 10/99
50 Am29DL640H February 9, 2005
PHYSICAL DIMENSIONS
TS 048—48-Pin Standard TSOP
Dwg rev AA; 10/99
February 9, 2005 Am29DL640H 51
PHYSICAL DIMENSIONS
TS 048—48-Pin Standard TSOP
Dwg rev AA; 10/99
52 Am29DL640H February 9, 2005
REVISION SUMMARY
Revision A (November 11, 2002)
Initial release.
Revision A+1 (August 29, 2003)
Am29DL640H
Converted to preliminary datasheet.
Distinctive Characteristics and Physical
Dimensions
Removed 48-ball fine pitch BGA and 64-ball fortified
BGA.
Added 63-ball fine pitch BGA.
Ordering Information
Changed package type from WC to WH and removed
PC package.
Table 6, Am29DL640H Boot Sector/Sector Block
Addresses for Protection/Unprotection
Modified the SA140 address.
Revision A+2 (October 24, 2003)
Table 11, Primary Vendor-Specific Extended Query
Corrected definitions for data at address 4Fh.
Revision A+3 (November 26, 2003)
DC Characteristics table
Changed VOL maximum specification from 4 mA to 2
mA.
Revision A+4 (May 10, 2004)
Updated preliminary to datasheet status.
Added additional header information on first page of
datasheet.
Revision A+5 (July 12, 2004)
Table 5, “Am29DL640H Autoselect Codes, (High
Voltage Method),” on page 14.
Replaced “80h (factory locked),40h (customer locked),
00h (not factory/customer locked)” with “81h (factory
locked),01h (customer and factory locked)”.
Table 12, “Am29DL640H Command Definitions,” on
page 27
In Secured Silicon Sector Factory Protect row, Data
column - Replaced “80/00” with “81/01”.
(Note 10) Replaced “The data is 80h for factory
locked, 40h for customer locked, and 00h for not fac-
tory/customer locked” with “The data is 81h for factory
locked, 40h for customer locked, and 01h for not fac-
tory/customer locked”.
Revision A+6 (February 9, 2005)
Connection Diagrams
Updated the 63-ball FBGA diagram.
Colophon
The products described in this document are designed, developed and manufactured as contemplated for general use, including without limita-
tion, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as con-
templated (1) for any use that includes fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the
public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility,
aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for
any use where chance of failure is intolerable (i.e., submersible repeater and artificial satellite). Please note that Spansion will not be liable to
you and/or any third party for any claims or damages arising in connection with above-mentioned uses of the products. Any semiconductor de-
vices have an inherent chance of failure. You must protect against injury, damage or loss from such failures by incorporating safety design mea-
sures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating
conditions. If any products described in this document represent goods or technologies subject to certain restrictions on export under the Foreign
Exchange and Foreign Trade Law of Japan, the US Export Administration Regulations or the applicable laws of any other country, the prior au-
thorization by the respective government entity will be required for export of those products
Trademarks
Copyright ©2002-2005 Advanced Micro Devices, Inc. All rights reserved.
AMD, the AMD logo, and combinations thereof are registered trademarks of Advanced Micro Devices, Inc.
ExpressFlash is a trademark of Advanced Micro Devices, Inc.
Product names used in this publication are for identification purposes only and may be trademarks of their respective companies.
