© 2009 Microchip Technology Inc. DS22151A-page 1
25AA080C/D, 25LC080C/D
Device Selection Table
Features
Max. Clock 10 MHz
Low-Power CMOS Technology:
- Max. write current: 5 mA at 5.5V
- Read current: 5 mA at 5.5V, 10 MHz
- Standby current: 5 μA at 5.5V
1024 x 8-bit Organization
16 Byte Page (‘C’ version devices)
32 Byte Page (‘D’ version devices)
Self-Timed Erase and Write Cycles (5 ms max.)
Block Write Protection:
- Protect none, 1/4, 1/2 or all of array
Built-In Write Protection:
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
Seque nti al Read
High Reliability:
- Endurance: > 1M erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4000V
Pb-Free and RoHS Compliant
Temperature Ranges Supported:
Description
The Microchip Technology Inc. 25AA080C/D,
25LC080C/D (25XX080C/D*) are 8 Kbit Serial
Electrically Erasable PROMs. The memory is accessed
via a simple Serial Peripheral Interface (SPI)
compatible serial bus. The bus signals required are a
clock input (SCK) plus separate data in (SI) and data
out (SO) lines. Access to the device is controlled
through a Chip Select (CS) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
tions on its inputs will be ignored, with the exception of
Chip Select, allowing the host to service higher priority
interrupts.
The 25XX080C/D is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packaging including 8-lead MSOP, TSSOP, and 2x3
TDFN. All packages are Pb-free and RoHS compliant.
Package Types (not to scale)
Part Number VCC Range Page Size Temp. Ranges Packages
25LC080C 2.5-5.5V 16 Byte I, E P, SN, ST, MS, MN
25AA080C 1.8-5.5V 16 Byte I P, SN, ST, MS, MN
25LC080D 2.5-5.5V 32 Byte I, E P, SN, ST, MS, MN
25AA080D 1.8-5.5V 32 Byte I P, SN, ST, MS, MN
- Industrial (I): -40°Cto +85°C
- Automotive (E): -40°C to +125°C
CS
SO
WP
V
SS
1
2
3
4
8
7
6
5
V
CC
HOLD
SCK
SI
PDIP/SOIC
(P, SN)
TSSOP/MSOP
CS
SO
WP
V
SS
1
2
3
4
8
7
6
5
V
CC
HOLD
SCK
SI
(ST, MS)
TDFN
CS
SO
WP
VSS
HOLD
SCK
SI
5
6
7
8
4
3
2
1VCC
(MN)
8K SPI Bus Serial EEPROM
*25XX080C/D is used in this document as a generic part
number for the 25AA080C/D, 25LC080C/D.
25XX080C/D
DS22151A-page 2 © 2009 Microchip Technology Inc.
1.0 ELECTRICAL CHARAC TERISTICS
Absolute Maximum Ratings (†)
VCC.............................................................................................................................................................................6.5V
All inputs and outputs w.r.t. VSS ......................................................................................................... -0.6V to VCC +1.0V
Storage temperature .................................................................................................................................-65°C to 150°C
Ambient temperature under bias...............................................................................................................-40°C to 125°C
ESD protection on all pins..........................................................................................................................................4 kV
TABLE 1-1: DC CHARACTERISTICS
NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device . This i s a stres s ratin g only and functio nal operati on of the devic e at thos e or any other co nditio ns abov e thos e
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for an
extended period of time may affect device reliability.
DC CHARACTERISTICS Industrial (I): TA = -40°C to +85°C VCC = 1.8V to 5.5V
Automotive (E): TA = -40°C to +125°C VCC = 2.5V to 5.5V
Param.
No. Sym. Characteristic Min. Max. Units Test Conditions
D001 VIH1High-level input
voltage 0.7 VCC VCC+1 V
D002 VIL1Low-level input
voltage -0.3 0.3 VCC VVCC2.7V
D003 VIL2-0.3 0.2 VCC VVCC < 2.7V
D004 VOL1Low-level output
voltage —0.4VIOL = 2.1 mA
D005 VOL2—0.2VIOL = 1.0 mA, VCC < 2.5V
D006 VOH High-level output
voltage VCC-0.5 V IOH = -400 μA
D007 ILI Input leakage current ±1 μACS = VCC, VIN = VSS OR VCC
D008 ILO Output lea kage
current ±1 μACS = VCC, VOUT = VSS OR VCC
D009 CINT Intern al Cap acit ance
(all inputs and
outputs)
—7pFTA = 25°C, CLK = 1.0 MHz,
VCC = 5.0V (Note)
D010 ICC Read
Operati ng Curren t
5
2.5
mA
mA
VCC = 5.5V; FCLK = 10.0 MHz;
SO = Open
VCC = 2.5V; FCLK = 5.0 MHz;
SO = Open
D011 ICC Wri te
5
3mA
mA VCC = 5.5V
VCC = 2.5V
D012 Iccs Standby Current
5
1
μA
μA
CS = VCC = 5.5V, Inputs tied to VCC or
VSS, TA = +125°C
CS = VCC = 5.5V, Inputs tied to VCC or
VSS, TA = +85°C
Note: This parameter is periodically sampled and not 100% tested.
© 2009 Microchip Technology Inc. DS22151A-page 3
25XX080C/D
TABLE 1-2: AC CHARACTERISTICS
AC CHARACTERISTICS Industrial (I): TA = -40°C to +85°C VCC = 1.8V to 5.5V
Automotive (E): TA = -40°C to +125°C VCC = 2.5V to 5.5V
Param.
No. Sym. Characteristic Min. Max. Units Test Conditions
1F
CLK Clock Freq uen cy
10
5
3
MHz
MHz
MHz
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
2T
CSS CS Setup Time 50
100
150
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
3T
CSH CS Hold Time 100
200
250
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
4T
CSD CS Disable Time 50 ns
5 Tsu Data Setup Time 10
20
30
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
6T
HD Data Hold Time 20
40
50
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
7T
RCLK Rise Time 2 µs (Note 1)
8T
FCLK Fall Time 2 µs (Note 1)
9T
HI Clock High Time 50
100
150
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
10 TLO Clock Low Time 50
100
150
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
11 TCLD Clock Delay Time 50 ns
12 TCLE Cloc k Enab le Time 50 ns
13 TVOutput Valid from Clock
Low
50
100
160
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
14 THO Output Hold Time 0 ns (Note 1)
15 TDIS Output Disable Time
40
80
160
ns
ns
ns
4.5V VCC 5.5V (Note 1)
2.5V VCC < 4.5V (Note 1)
1.8V VCC < 2.5V (Note 1)
16 THS HOLD Setup Time 20
40
80
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
Note 1: This parameter is periodically sampled and not 100% tested.
2: TWC begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle
is complete .
3: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance™ Model which can be obtained from our web site:
www.microchip.com.
25XX080C/D
DS22151A-page 4 © 2009 Microchip Technology Inc.
TABLE 1-3: AC TEST CONDITIONS
17 THH HOLD Hold Time 20
40
80
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
18 THZ HOLD Low to Output
High-Z 30
60
160
ns
ns
ns
4.5V VCC 5.5V (Note 1)
2.5V VCC < 4.5V (Note 1)
1.8V VCC < 2.5V (Note 1)
19 THV HOLD High to Output
Valid 30
60
160
ns
ns
ns
4.5V VCC 5.5V
2.5V VCC < 4.5V
1.8V VCC < 2.5V
20 TWC Internal Write Cycle Time 5 ms (Note 2)
21 Endurance 1M E/W
Cycles (Note 3)
TABLE 1-2: AC CHARACTERISTICS (CONTINUED)
AC CHARACTERISTICS Industrial (I): TA = -40°C to +85°C VCC = 1.8V to 5.5V
Automotive (E): TA = -40°C to +125°C VCC = 2.5V to 5.5V
Param.
No. Sym. Characteristic Min. Max. Units Test Conditions
Note 1: This parameter is periodically sampled and not 100% tested.
2: TWC begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle
is complete .
3: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance™ Model which can be obtained from our web site:
www.microchip.com.
AC Waveform:
VLO = 0.2V
VHI = VCC - 0.2V (Note 1)
VHI = 4.0V (Note 2)
CL = 50 pF
Timing Measurement Refere nce Lev el
Input 0.5 VCC
Output 0.5 VCC
Note 1: For VCC 4.0V
2: For VCC > 4.0V
© 2009 Microchip Technology Inc. DS22151A-page 5
25XX080C/D
FIGURE 1-1: HOLD TIMING
FIGURE 1-2: SERIAL INPUT TIMING
FIGURE 1-3: SERIAL OUTPUT TIMING
CS
SCK
SO
SI
HOLD
17
16 16 17
19
18
Don’t Care 5
High-Impedance
n + 2 n + 1 n n - 1
n
n + 2 n + 1 n nn - 1
CS
SCK
SI
SO
65
8
711
3
LSB in
MSB in
High-Impedance
12
Mode 1,1
Mode 0,0
2
4
CS
SCK
SO
10
9
13
MSB out ISB out
3
15
Don’t Care
SI
Mode 1,1
Mode 0,0
14
25XX080C/D
DS22151A-page 6 © 2009 Microchip Technology Inc.
2.0 FUNCTIONAL DESCRIPTION
2.1 Principles of Operation
The 25XX080C/D are 1024 byte Serial EEPROMs
designed to interface directly with the Serial
Peripheral Interface (SPI) Port of many of today’s
popular microcontroller families, including
Microchip’s PIC® microcontrollers. It may also inter-
face with microcontrollers that do not have a built-in
Sync hrono us Se rial Port b y usin g discr ete
I/O lines programmed properly with the software.
The 25XX08 0C /D contai ns an 8 - bit in stru cti on registe r.
The d evic e is acce sse d via the SI pin, w ith data bei ng
clocked in on the ris ing edg e of SCK. Th e C S pin mus t
be low and the HOLD pin must be high for the entire
operation.
Table 2-1 contains a list of the possible instruction
bytes and format for device operation. All instructions,
addresses, and data are transferred MSB first, LSB
last.
Data (SI) is sampled on the first rising edge of SCK
after CS go es low. If the cloc k li ne is sha red wit h ot her
periphera l dev ices on the SPI bus , the user can asser t
the HOLD input and place the 25XX080C/D in ‘HOLD’
mode. After releasing the HOLD pin, operation will
resume from the point when the HOLD was asserted.
2.2 Read Sequence
The device is selected by pulling CS low. The 8-bit
READ instruction is transmitted to the 25XX080C/D fol-
lowe d by the 16-bit address, with th e six MS Bs of the
address being “don’t care” bits. After the correct READ
instruc tio n a nd address ar e s en t, t he dat a store d i n th e
memory at the selected address is shifted out on the
SO pin. The data stored in the memory at the next
address can be read sequentially by continuing to pro-
vide cl ock puls es. The inter nal Addr ess Pointe r is auto-
matically incremented to the next higher address after
each byte of data is shifted out. When the highest
address is reached (03FFh), the address counter rolls
over to address 0000h allowing the read cycle to be
continu ed indefi nitely. The read op eration is terminate d
by raisin g the CS pin (Figure 2-1).
2.3 Write Sequence
Prior to any attempt to write data to the 25XX080C/D,
the write enable latch must be set by issuing the WREN
instruction (Figure 2-4). This is done by setting CS low
and then clocking out the proper instruction into the
25XX080C/D. After all eight bits of the instruction are
transmitted, the CS must be brought high to set the
write enable latch. If the write operation is initiated
immediately after the WREN instruction without CS
being brought high, the data will not be written to the
array bec ause the wr ite enable l atch will not h ave been
properly set.
Once the write enable latch is set, the user may
proceed by setting the CS low, issuing a WRITE
ins tru ct io n, f o llowed b y t he 1 6 -b i t ad d ress, wi th th e s ix
MSBs of the address being “don’t care” bits, and then
the data to be written. Up to 16 bytes (25XX080C) or 32
bytes (25XX080D) of data can be sent to the device
before a w rite cycle is neces sary. The only restric tion is
that all of the bytes must reside in the same page.
For the data to be actually written to the array, the CS
must be brought high a fter the Leas t Significant bit (D0)
of the nth data byte has been clocked in. If CS is
brought high at any other time, the write operation will
not be completed. Refer to Figure 2-2 and Figure 2-3
for more detailed illustrations on the byte write
sequence and the page write sequence, respectively.
While the write is in progress, the ST ATUS register may
be read to check the status of the WPEN, WIP, WEL,
BP1 and BP0 bits (Figure 2-6). A read attempt of a
memory array location will not be possible during a
write cycle. When the write cycle is completed, the
write enab le latc h is res et.
Note: Page write opera tions are l imited to wri ting
bytes within a single physical page,
regardless of the number of bytes
actually being written. Physical page
boundaries start at addresses that are
integer multiples of the page buffer size (or
‘pag e size’) an d, end at addresses tha t are
integer multiples of page size – 1. If a
Page Write command attempts to write
across a physical page boundary, the
result is that the data wraps around to the
beginning of the current page (overwriting
data previously stored there), instead of
being w ritte n to the next p a ge as mi ght be
expected. It is therefore necessary for the
application software to prevent page write
operations that would attempt to cross a
page boundary.
© 2009 Microchip Technology Inc. DS22151A-page 7
25XX080C/D
Block Diagram
FIGURE 2-1: READ SEQUENCE
SI
SO
SCK
CS
HOLD
WP
STATUS
Register
I/O Control Memory
Control
Logic
X
Dec
HV Generator
EEPROM
Array
Page Latches
Y Decoder
Sense Amp.
R/W Control
Logic
VCC
VSS
TABLE 2-1: INSTRUCTION SET
Instruction Name Instruction Format Description
READ 0000 0011 Read data from memory array beginning at selected address
WRITE 0000 0010 Write data to memory array beginning at selected address
WRDI 0000 0100 Reset the write enable latch (disable write operations)
WREN 0000 0110 Set the write enable latch (enable write operations)
RDSR 0000 0101 Read STATUS Register
WRSR 0000 0001 Write STATUS Register
SO
SI
SCK
CS
0 234567891011 21222324252627282930311
0100000115 14 13 12 210
76543210
Instruction 16-bit Address
Data Out
High-Impedance
25XX080C/D
DS22151A-page 8 © 2009 Microchip Technology Inc.
FIGURE 2-2: BYTE WRITE SEQUENCE
FIGURE 2-3: PAGE WRITE SEQUENCE
SO
SI
CS
91011 2122232425262728293031
0000000115 14 13 12 21076543210
Instruction 16-bit Address Data Byte
High-Impedance
SCK 0 23456718 Twc
SI
CS
9 1011 2122232425262728293031
0000000115 14 13 12 21076543210
Instructi on 16-bit Addre ss Data Byte 1
SCK 0 23456718
SI
CS
41 42 43 46 47
76543210
Data Byte n (16/32 max)
SCK 32 34 35 36 37 38 3933 40
76543210
Data Byte 3
76543210
Data Byte 2
44 45
© 2009 Microchip Technology Inc. DS22151A-page 9
25XX080C/D
2.4 Wr ite Enable (WREN) and Write
Disable (WRDI)
The 25XX080C/D contains a write enable latch. See
Table 2-4 for the Write-Protect Functionality Matrix.
This latch must be set before any write operation will be
completed internally. The WREN instruction will set the
latch, and the WRDI will reset the latch.
The following is a list of conditions under which the
write enab le latc h wi ll be reset:
Power-up
WRDI instruction successfully executed
WRSR instruction successfully executed
WRITE instruction successfully executed
FIGURE 2-4: WRITE ENABLE SEQUENCE (WREN)
FIGURE 2-5: WRITE DISABLE SEQUENCE (WRDI)
SCK
0 2345671
SI
High-Impedance
SO
CS
010000 01
SCK
0 2345671
SI
High-Impedance
SO
CS
010000 01
0
25XX080C/D
DS22151A-page 10 © 2009 Microchip Technology Inc.
2.5 Read Status Register (RDSR)
Instruction
The Read Status Register (RDSR) instruction provides
access to the STATUS register. The STATUS register
may be rea d at any time, ev en during a write cy cle. The
STATUS register is formatted as follows:
TABLE 2-2: STATUS REGISTER
The Write-In-Process (WIP) bit indicates whether the
25XX080C/D is busy with a write operation. When set
to a ‘1’, a w rite is in prog ress, when set to a ‘0’, no write
is in progress. This bit is read-only.
The Write Enable Lat ch (WEL) bit indicat es the st atus
of the write enable latch and is read only. When set to
a ‘1’, the la tch allow s writes to the array or the STATUS
register, when set to a ‘0’, the latch prohibits writes to
the array or the STATUS register. The state of this bit
can always be updated via the WREN or WRDI com-
mands r egardle ss of the state o f write pr otecti on on the
STATUS register. These commands are shown in
Figure 2-4 and Figure 2-5.
The Block Protection (BP0 and BP1) bits indicate
which blocks are currently write-protected. These bits
are set by the user issuing the WRSR instruction, which
is in Figure 2-7. These bits are nonvolatile and are
shown in Table 2-3.
See Figure 2-6 for the RDSR timing sequence.
FIGURE 2-6: READ STATUS REGISTER TIMING SEQUENCE (RDSR)
7 654 3 2 1 0
W/R –––W/RW/R R R
WPEN X X X BP1 BP0 WEL WIP
W/R = writable/readable. R = read-only.
SO
SI
CS
9101112131415
11000000
7654 210
Instruction
Data from STATUS Register
High-Impedance
SCK
0 23456718
3
© 2009 Microchip Technology Inc. DS22151A-page 11
25XX080C/D
2.6 Wr it e Status Regist er (WRSR)
Instruction
The Write S t atus Re gister (WRSR) inst ruction allows the
user to write to the nonvolatile bits in the STATUS reg-
ister as shown in Table 2-2. The user is able to select
one of four levels of protection for the array by writing
to the appropriate bits in the STATUS register. The
array is divided up into four segment s. The user has the
ability to write-protect none, one, two or all four of the
segments of the array. The partitioning is controlled as
shown in Table 2-3.
The Write-Protect Enable (WPEN) bit is also a
nonvolatile bit that is available as an enable bit for the WP
pin. The Write-Protect (WP) pin and the Write-Protect
Enable (WPEN) bit in the STATUS register control the
progra mmabl e hardw are writ e-prot ect fea ture. Hard ware
writ e protecti on is enable d when WP pin is low and the
WPEN bit is high. Hardware write protection is disabled
when either the WP pin is high or the WPEN bit is low.
When the chip is hardw are write-p rotected, onl y writes to
nonvolatile bits in the ST ATUS register are disabled. See
Table 2-4 for a ma tri x of functi on al ity o n the W PEN b it .
See Figure 2-7 for the WRSR timing sequence.
TABLE 2-3: ARRAY PROTECTION
FIGURE 2-7: WRITE STATUS REGISTER TIMING SEQUENCE (WRSR)
BP1 BP0 Array Addresses
Write-Protected
00 none
01 upper 1/4
(0300h-03FFh)
10 upper 1/2
(0200h-03FFh)
11 all
(0000h-03FFh)
SO
SI
CS
9101112131415
01000000
7654 210
Instruction Data to STATUS Register
High-Impedance
SCK
0 23456718
3
25XX080C/D
DS22151A-page 12 © 2009 Microchip Technology Inc.
2.7 Data Protection
The following protection has been implemented to
prevent inadvertent writes to the array :
The write enable latch is reset on power-up
A write enable instruction must be issued to set
the write enable latch
After a byte write, page write or STATUS r egister
write, the write enable latch is reset
•CS
must be set high after the proper number of
clock cycles to start an internal write cycle
Access to the array during an internal write cycle
is ignored and programming is continued
2.8 Power-On State
The 25XX080C/D powers on in the following state:
The device is in low-power Standby mode
(CS=1)
The write enable latch is reset
SO is in high-impedance state
A high-to-low-level transition on CS is required to
enter activ e st ate
TABLE 2-4: WRITE-PROTECT FUNCTIONALITY MATRIX
WEL
(SR bit 1) WPEN
(SR bit 7) WP
(pin 3) Protected Blocks Unprotected Blocks STATUS Register
0xx
Protected Protected Protected
10x
Protected Writable Writable
110 (low) Protected Writable Protected
111 (high) Protected Writable Writable
x = don’t care
© 2009 Microchip Technology Inc. DS22151A-page 13
25XX080C/D
3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PIN FUNCTION TABLE
3.1 Chip Select (CS)
A low level on this pin selects the device. A high level
deselects the device and forces it into Standby mode.
However, a programming cycle which is already
initiated or in p r ogre ss w il l be co mpl ete d, regardle ss of
the CS input signal. If CS is brought high during a
progra m cycle, t he device wil l go into Standb y mode as
soon as the programming cycle is complete. When the
device is deselected, SO goes to the high-impedance
state, allowing multiple parts to share the same SPI
bus. A low-to-high transition on CS after a valid write
sequence initiates an internal write cycle. After power-
up, a low lev el on CS is required p r ior to any se qu enc e
being initiated.
3.2 Serial Output (SO)
The SO pin is used to transfer data out of the
25XX080C/D. During a read cycle, data is shifted out
on this pin after the falling edge of the serial clock.
3.3 Write-Protect (WP)
This pin is used in conjunction with the WPEN bit in the
STATUS register to prohibit writes to the nonvolatile
bits in the STATUS register. When WP is low and
WPEN is high, wr iting to the nonvolat ile bits in the STA-
TUS register is disabled. All other operations function
normally. When WP is high, all functions, including
writes to the nonvolatile bits in the STATUS register
operate no rmally. If the WPEN bit is set, WP low during
a STATUS register write sequence will disable writing
to the STATUS register. If an internal write cycle has
already begun, WP go ing low w ill h ave no ef fect on the
write.
The WP pin function is blocked when the WPEN bit in
the STATUS register is low. This allows the user to
install the 25XX080C/D in a system with WP pin
grounded and still be able to write to the STATUS reg-
ister. The WP pin functions will be enabled when the
WPEN bit is set high.
3.4 Seria l In p u t (SI)
The SI pin is used to transfer data into the device. It
receives instructions, addresses and data. Data is
latched on the rising edge of the serial clock.
3.5 Serial Clock (SCK)
The SCK is used to synchronize the communication
between a master and the 25XX080C/D. Instructions,
address es or data presen t on the SI pin are la tc hed on
the risin g edge of t he c lo ck in put, w hil e d at a on th e SO
pin is updated after the falling edge of the clock input.
3.6 Hold (HOLD)
The HOLD pin is used to suspend transmission to the
25XX0 80C/D wh ile in t he middl e of a se rial seq uence
withou t having to retransmit the entire se quence ag ain.
It must be he ld high any t ime t his fun cti on is not bei ng
used. Once the device is selected and a serial
sequence is underway, the HOLD pin may be pulled
low to pause further serial communication without
resetting the serial sequence. The HOLD pin must be
brought low while SCK is low, otherwise the HOLD
function will not be invoked until the next SCK high-to-
low transition. The 25XX080C/D must remain selected
during this sequence. The SI, SCK and SO pins are in
a high-impedance state during the time the device is
paus ed and tran sitions on these p ins will be ignored. To
resume serial communication, HOLD must be brought
high while the SCK pin is low, otherwise serial
communication will not resume. Lowering the HOLD
line at any time will tri-state the SO line.
Name Pin Number Function
CS 1 Chip Sele ct Input
SO 2 Serial Data Output
WP 3 Write-Protect Pin
VSS 4 Ground
SI 5 Serial Data Input
SCK 6 Serial Clock Input
HOLD 7 H old Input
VCC 8 Supply Voltage
25XX080C/D
DS22151A-page 14 © 2009 Microchip Technology Inc.
4.0 PACKAGING INFORMATION
4.1 Package Marking Information
8-Lead MSOP (150 mil) Example:
XXXXXXT
YWWNNN 5L8DI
9281L7
T/XXXNNN
XXXXXXXX
YYWW
8-Lead PDIP
8-Lead SOIC
XXXXYYWW
XXXXXXXT
NNN
XXXX
TYWW
8-Lead TSSOP
NNN
I/P 1L7
25LC080D
0928
Example:
Example:
SN 0928
25LC08DI
1L7
1L7
5L8D
I628
Example:
3
e
3
e
8-Lead 2x3 TDFN Example:
XXX
YWW
NN
C44
928
17
© 2009 Microchip Technology Inc. DS22151A-page 15
25XX080C/D
Part Number
1st Line Marking Codes
TSSOP MSOP TDFN
I Temp. E Temp.
25AA080C 5A8C 5A8CT C31
25AA080D 5A8D 5A8DT C41
25LC080C 5L8C 5L8CT C34 C35
25LC080D 5L8D 5L8DT C44 C45
Note: T = Temperature grade (I, E)
Legend: XX...X Customer-specific information
Y Year code (last digit of calendar year)
YY Year code (last 2 digits of calendar year)
WW We ek code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
*This package is Pb-free. The Pb-free JEDEC designator ( )
can be found on the outer packaging for this package.
Note: In the even t the full M icroc hip p art numb er cann ot be mark ed on one line, it w ill
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
3
e
3
e
25XX080C/D
DS22151A-page 16 © 2009 Microchip Technology Inc.
8-Lead Plastic Micro Small Outline Package (MS or UA) [MSOP]
Notes:
1. Pin 1 visual index feature may vary, but must be located within the hatched area.
2. Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.15 mm per side.
3. Dimensioning and tolerancing per ASME Y14.5M.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
REF: Reference Dimension, usually without tolerance, for information purposes only.
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Units MILLIMETERS
Dimension Limits MIN NOM MAX
Number of Pins N 8
Pitch e 0.65 BSC
Overall Height A 1.10
Molded Package Thickness A2 0.75 0.85 0.95
Standoff A1 0.00 0.15
Overall Width E 4.90 BSC
Molded Package Width E1 3.00 BSC
Overall Length D 3.00 BSC
Foot Length L 0.40 0.60 0.80
Footprint L1 0.95 REF
Foot Angle φ
Lead Thickness c 0.08 0.23
Lead Width b 0.22 0.40
D
N
E
E1
NOTE 1
12
e
b
A
A1
A2
c
L1 L
φ
Microchip Technology Drawing C04-111B
© 2009 Microchip Technology Inc. DS22151A-page 17
25XX080C/D
8-Lead Plastic Dual In-Line (P or PA) – 300 mil Body [PDIP]
Notes:
1. Pin 1 visual index feature may vary, but must be located with the hatched area.
2. § Significant Characteristic.
3. Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" per side.
4. Dimensioning and tolerancing per ASME Y14.5M.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Units INCHES
Dimension Limits MIN NOM MAX
Number of Pins N 8
Pitch e .100 BSC
Top to Seating Plane A .210
Molded Package Thickness A2 .115 .130 .195
Base to Seating Plane A1 .015
Shoulder to Shoulder Width E .290 .310 .325
Molded Package Width E1 .240 .250 .280
Overall Length D .348 .365 .400
Tip to Seating Plane L .115 .130 .150
Lead Thickness c .008 .010 .015
Upper Lead Width b1 .040 .060 .070
Lower Lead Width b .014 .018 .022
Overall Row Spacing § eB .430
N
E1
NOTE 1
D
12
3
A
A1
A2
L
b1
b
e
E
eB
c
Microchip Technology Drawing C04-018B
25XX080C/D
DS22151A-page 18 © 2009 Microchip Technology Inc.
8-Lead Plastic Small Outline (SN or OA) – Narrow, 3.90 mm Body [SOIC]
Notes:
1. Pin 1 visual index feature may vary, but must be located within the hatched area.
2. § Significant Characteristic.
3. Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.15 mm per side.
4. Dimensioning and tolerancing per ASME Y14.5M.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
REF: Reference Dimension, usually without tolerance, for information purposes only.
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Units MILLIMETERS
Dimension Limits MIN NOM MAX
Number of Pins N 8
Pitch e 1.27 BSC
Overall Height A 1.75
Molded Package Thickness A2 1.25
Standoff §A1 0.10 0.25
Overall Width E 6.00 BSC
Molded Package Width E1 3.90 BSC
Overall Length D 4.90 BSC
Chamfer (optional) h 0.25 0.50
Foot Length L 0.40 1.27
Footprint L1 1.04 REF
Foot Angle φ
Lead Thickness c 0.17 0.25
Lead Width b 0.31 0.51
Mold Draft Angle Top α 15°
Mold Draft Angle Bottom β 15°
D
N
e
E
E1
NOTE 1
12 3
b
A
A1
A2
L
L1
c
h
h
φ
β
α
Microchip Technology Drawing C04-057B
© 2009 Microchip Technology Inc. DS22151A-page 19
25XX080C/D
8-Lead Plastic Thin Shrink Small Outline (ST) – 4.4 mm Body [TSSOP]
Notes:
1. Pin 1 visual index feature may vary, but must be located within the hatched area.
2. Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.15 mm per side.
3. Dimensioning and tolerancing per ASME Y14.5M.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
REF: Reference Dimension, usually without tolerance, for information purposes only.
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Units MILLIMETERS
Dimension Limits MIN NOM MAX
Number of Pins N 8
Pitch e 0.65 BSC
Overall Height A 1.20
Molded Package Thickness A2 0.80 1.00 1.05
Standoff A1 0.05 0.15
Overall Width E 6.40 BSC
Molded Package Width E1 4.30 4.40 4.50
Molded Package Length D 2.90 3.00 3.10
Foot Length L 0.45 0.60 0.75
Footprint L1 1.00 REF
Foot Angle φ
Lead Thickness c 0.09 0.20
Lead Width b 0.19 0.30
D
N
E
E1
NOTE 1
12
b
e
c
A
A1
A2
L1 L
φ
Microchip Technology Drawing C04-086B
25XX080C/D
DS22151A-page 20 © 2009 Microchip Technology Inc.
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© 2009 Microchip Technology Inc. DS22151A-page 21
25XX080C/D
 !""#$%&'
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25XX080C/D
DS22151A-page 22 © 2009 Microchip Technology Inc.
APPENDIX A: REVISION HISTORY
Revision A (4/2009)
Original release of this document.
© 2009 Microchip Technology Inc. DS22151A-page 23
25XX080C/D
THE MICROCHIP WEB SITE
Microc hip pro vides onl ine s upport v ia our W WW site at
www.microchi p.c om . Thi s web si te i s us ed as a m ean s
to make files and information easily available to
customers. Accessible by using your favorite Internet
browser, the web site contains the following
information:
Product Support – Data sheets and errata,
application notes and sample programs, design
resources, user’s guides and hardware support
documents, latest software releases and archived
software
General Technical Support – Frequently Asked
Questions (FAQ), technical support requests,
online dis cu ss io n gr oups, Microchip con sultant
program member listing
Business of Microchip – Product selector and
ordering guides, latest Microchip press releases,
listing of seminars and events, listings of
Microchip sales offices, distributors and factory
representatives
CUSTOMER CHANGE NOTIFICATION
SERVICE
Microchip’s customer notification service helps keep
customers current on Microchip products. Subscribers
will receive e-mail notification whenever there are
changes, updates, revisions or errata related to a
specif ied produ ct family or develo pment tool of interes t.
To register, access the Microchip web site at
www.microchip.com, click on Customer Change
Notification and follow the registration instructions.
CUSTOMER SUPP ORT
Users of Microchip products can receive assistance
through several channels:
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Development Systems Information Line
Customers should contact their distributor,
representative or field application engineer (FAE) for
support. Local sales offices are also available to help
customers. A listing of sales offices and locations is
included in the back of this document.
Technical s upport is a vailable through the web si te
at: http://support.microchip.com
25XX080C/D
DS22151A-page 24 © 2009 Microchip Technology Inc.
READER RESP ONSE
It is ou r intentio n to provide you w it h th e b es t do cument ation po ss ib le to ensure suc c es sfu l u se of y ou r M ic roc hip prod-
uct. If you wi sh to prov ide you r comment s on org aniza tion, clar ity, subj ect matte r , and ways i n which o ur docum entatio n
can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150.
Please list the following information, and use this outline to provide us with your comments about this document.
To: Technical Publications Manager
RE: Reader Response Total Pages Sent ________
From: Name
Company
Address
City / State / ZIP / Country
Telephone: (_______) _________ - _________
Application (optional):
Would you like a reply? Y N
Device: Literature Number:
Questions:
FAX: (______) _________ - _________
DS22151A25XX080C/D
1. What are the best featu res of this document ?
2. How does this document meet your hardware and software development needs?
3. Do you find the organization of this document easy to follow? If not, why?
4. What additions to the document do you think would enhance the structure and subject?
5. What deletions from the document could be made without affecting the overall usefulness?
6. Is there any incorrect or misleading information (what and where)?
7. How would you improve this document?
© 2009 Microchip Technology Inc. DS22151A-page 25
25XX080C/D
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO. X/XX
PackageTape & Reel
Device
Device: 25AA080C
25AA080D
25LC080C
25LC080D
8 Kbit, 1.8V, 16 Byte Page SPI Serial EEPROM
8 Kbit, 1.8V, 32 Byte Page SPI Serial EEPROM
8 Kbit, 2.5V, 16 Byte Page SPI Serial EEPROM
8 Kbit, 2.5V, 32 Byte Page SPI Serial EEPROM
Tape & Reel: Blank =
T=
Standard packaging
Tape & Reel
Temperature
Range: I=
E=
-40°C to+85°C
-40°C to+125°C
Package: MS =
P=
SN =
ST =
MNY(1) =
Plastic MSOP (Micro Small Outline), 8-lead
Plastic DIP (300 mil body), 8-lead
Plastic SOIC (3.90 mm body), 8-lead
TSSOP, 8-lead
8-lead 2x3 mm TDFN
Examples:
a) 25AA080C-I/MS = 8 Kbit, 16-byte page, 1.8V
Serial EEPROM, Industrial temp., MSOP
package
b) 25AA080CT-I/SN = 8 Kbit, 16-byte page, 1.8V
Serial EEPROM, Industrial temp., T ape & Reel,
SOIC package
c) 25LC080DT-I/SN = 8 Kbit, 32-byte page, 2.5V
Serial EEPROM, Industrial temp., Tape & Reel,
SOIC package
d) 25LC080DT-I/ST = 8 Kbit, 32-byte page, 2.5V
Serial EEPROM, Industrial temp., Tape & Reel,
TSSOP package
Note 1: “Y ” indicates a Nickel Palladium Gold (NiPdAu) finish.
X
Temp Range
25XX080C/D
DS22151A-page 26 © 2009 Microchip Technology Inc.
NOTES:
© 2009 Microchip Technology Inc. DS22151A-page 27
Information contained in this publication regarding device
applications and the like is provided only for your con ve nience
and may be superseded by u pdates. It is y our respo ns ibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTA RT, rfPI C, SmartS hunt and UNI/O are registered
trademarks of Microchip Tec hnology Incorporat ed in the
U.S.A. and other countries.
FilterLab, Hampshire, Linear Active Thermistor, MXDEV,
MXLAB, SEEVAL, SmartSensor and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Prog ra m ming, IC S P, ICE PI C , M i n di , MiWi, MPASM , MPLAB
Certified logo, MPLIB, MPLINK, mTouch, nanoW att XLP,
PICkit, PICDEM, P ICDEM.net, PICtail , PIC32 logo, PowerCal,
PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select
Mode, Total Endurance, TSHARC, WiperLock and ZENA are
trademarks of Microchip Tec hnology Incorporat ed in the
U.S.A. and other countries.
SQTP is a service mark of Microchip T echnology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2009, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Note the following details of the code protection feature on Microchip devices:
Microchip products meet the specification contained in their particular Microchip Data Sheet.
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in t he
intended manner and under normal conditions.
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contai ned in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.
Code protection is c onstantly evolving. We a t Microc hip are co m mitted to continuously improving the code prot ect ion featur es of our
products. Attempts to break Microchip’ s code protection feature may be a violation of the Digital Millennium Copyright Act. If such act s
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code ho pping
devices, Serial EEPROMs, microperiph erals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS22151A-page 28 © 2009 Microchip Technology Inc.
AMERICAS
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