Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
1
Rev. C
10/10/06
ISSI®
Copyright © 2006 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability
arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any
published information and before placing orders for products.
IS64WV6416BLL
IS61WV6416BLL
FUNCTIONAL BLOCK DIAGRAM
64K x 16 HIGH-SPEED CMOS STATIC RAM
OCTOBER 2006
FEATURES
High-speed access time:
12 ns: 3.3V + 10%
15 ns: 2.5V-3.6V
CMOS low power operation:
50 mW (typical) operating
25 µW (typical) standby
TTL compatible interface levels
Fully static operation: no clock or refresh
required
Three state outputs
Data control for upper and lower bytes
Automotive Temperature Available
Lead-free available
DESCRIPTION
The ISSI IS61/64WV6416BLL is a high-speed, 1,048,576-
bit static RAM organized as 65,536 words by 16 bits. It is
fabricated using ISSI's high-performance CMOS
technology. This highly reliable process coupled with inno-
vative circuit design techniques, yields access times as
fast as 12ns (3.3V + 10%) and 15ns (2.5V-3.6V) with low
power consumption.
When CE is HIGH (deselected), the device assumes a
standby mode at which the power dissipation can be
reduced down with CMOS input levels.
Easy memory expansion is provided by using Chip Enable
and Output Enable inputs, CE and OE. The active LOW
Write Enable (WE) controls both writing and reading of the
memory. A data byte allows Upper Byte (UB) and Lower
Byte (LB) access.
The IS61/64WV6416BLL is packaged in the JEDEC stan-
dard 44-pin TSOP-II, 44-pin 400-mil SOJ, and 48-pin mini
BGA (6mm x 8mm).
A0-A15
CE
OE
WE
64K x 16
MEMORY ARRAY
DECODER
COLUMN I/O
CONTROL
CIRCUIT
GND
V
DD
I/O
DATA
CIRCUIT
I/O0-I/O7
Lower Byte
I/O8-I/O15
Upper Byte
UB
LB
2
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
PIN CONFIGURATIONS
44-Pin TSOP-II
48-Pin mini BGA (6mm x 8mm)
PIN DESCRIPTIONS
A0-A15 Address Inputs
I/O0-I/O15 Data Inputs/Outputs
CE Chip Enable Input
OE Output Enable Input
WE Write Enable Input
LB Lower-byte Control (I/O0-I/O7)
UB Upper-byte Control (I/O8-I/O15)
NC No Connection
VDD Power
GND Ground
1 2 3 4 5 6
A
B
C
D
E
F
G
H
LB OE A0 A1 A2 NC
I/O8UB A3 A4 CE I/O0
I/O9I/O10 A5 A6 I/O1I/O2
GND I/O11 NC A7 I/O3V
DD
V
DD
I/O12 NC NC I/O4GND
I/O14 I/O13 A14 A15 I/O5I/O6
I/O15 NC A12 A13 WE I/O7
NC A8 A9 A10 A11 NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
A15
A14
A13
A12
A11
CE
I/O0
I/O1
I/O2
I/O3
V
DD
GND
I/O4
I/O5
I/O6
I/O7
WE
A10
A9
A8
A7
NC
A0
A1
A2
OE
UB
LB
I/O15
I/O14
I/O13
I/O12
GND
V
DD
I/O11
I/O10
I/O9
I/O8
NC
A3
A4
A5
A6
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
A15
A14
A13
A12
A11
CE
I/O0
I/O1
I/O2
I/O3
VDD
GND
I/O4
I/O5
I/O6
I/O7
WE
A10
A9
A8
A7
NC
A0
A1
A2
OE
UB
LB
I/O15
I/O14
I/O13
I/O12
GND
VDD
I/O11
I/O10
I/O9
I/O8
NC
A3
A4
A5
A6
NC
44-Pin SOJ (K)
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
OPERATING RANGE (VDD)
Range Ambient Temperature VDD (15 ns) VDD (12 ns)
Commercial 0°C to +70°C 2.5V-3.6V 3.3V + 10%
Industrial –40°C to +85°C 2.5V-3.6V 3.3V + 10%
Automotive –40°C to +125°C 2.5V-3.6V 3.3V + 10%
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Parameter Value Unit
VTERM Terminal Voltage with Respect to GND –0.5 to VDD+0.5 V
TSTG Storage Temperature –65 to +150 °C
PTPower Dissipation 1.5 W
VDD VDD Related to GND -0.2 to +3.9 V
Note:
1. Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect reliability.
TRUTH TABLE
I/O PIN
Mode WEWE
WEWE
WE CECE
CECE
CE OEOE
OEOE
OE LBLB
LBLB
LB UBUB
UBUB
UB I/O0-I/O7 I/O8-I/O15 VDD Current
Not Selected X H X X X High-Z High-Z ISB1, ISB2
Output Disabled H L H X X High-Z High-Z ICC
X L X H H High-Z High-Z
Read H L L L H DOUT High-Z ICC
H L L H L High-Z DOUT
HLLLL DOUT DOUT
Write L L X L H DIN High-Z ICC
L L X H L High-Z DIN
LLXLL DIN DIN
4
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
DC ELECTRICAL CHARACTERISTICS (Over Operating Range)
VDD = 2.5V-3.6V
Symbol Parameter Test Conditions Min. Max. Unit
VOH Output HIGH Voltage VDD = Min., IOH = –1.0 mA 2.3 V
VOL Output LOW Voltage VDD = Min., IOL = 1.0 mA 0.4 V
VIH Input HIGH Voltage 2.0 VDD + 0.3 V
VIL Input LOW Voltage(1) –0.3 0.8 V
ILI Input Leakage GND VIN VDD –2 2 µA
ILO Output Leakage GND VOUT VDD, Outputs Disabled 2 2 µA
Note:
1. VIL (min.) = –0.3V DC; VIL (min.) = –2.0V AC (pulse width - 2.0 ns). Not 100% tested.
VIH (max.) = VDD + 0.3V DC; VIH (max.) = VDD + 2.0V AC (pulse width - 2.0 ns). Not 100% tested.
DC ELECTRICAL CHARACTERISTICS (Over Operating Range)
VDD = 3.3V + 10%
Symbol Parameter Test Conditions Min. Max. Unit
VOH Output HIGH Voltage VDD = Min., IOH = –4.0 mA 2.4 V
VOL Output LOW Voltage VDD = Min., IOL = 8.0 mA 0.4 V
VIH Input HIGH Voltage 2 VDD + 0.3 V
VIL Input LOW Voltage(1) –0.3 0.8 V
ILI Input Leakage GND VIN VDD –2 2 µA
ILO Output Leakage GND VOUT VDD, Outputs Disabled 2 2 µA
Note:
1. VIL (min.) = –0.3V DC; VIL (min.) = –2.0V AC (pulse width - 2.0 ns). Not 100% tested.
VIH (max.) = VDD + 0.3V DC; VIH (max.) = VDD + 2.0V AC (pulse width - 2.0 ns). Not 100% tested.
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
CAPACITANCE(1)
Symbol Parameter Conditions Max. Unit
CIN Input Capacitance VIN = 0V 6 pF
COUT Input/Output Capacitance VOUT = 0V 8 pF
Note:
1. Tested initially and after any design or process changes that may affect these parameters.
POWER SUPPLY CHARACTERISTICS(1) (Over Operating Range)
-12 ns -15 ns
Symbol Parameter Test Conditions Options Min. Max. Min. Max. Unit
ICC VDD Dynamic Operating VDD = Max.,
COM.
—35 30 mA
Supply Current IOUT = 0 mA, f = fMAX
IND.
—45 40
AUTO —60 50
typ.
(2)
—20 20
ICC1Operating Supply VDD = Max.,
COM.
—5 5 mA
Current Iout = 0mA, f = 0
IND.
—5 5
AUTO —5 5
ISB2CMOS Standby VDD = Max.,
COM.
—20 20 uA
Current (CMOS Inputs) CE VDD – 0.2V,
IND.
—50 50
VIN VDD – 0.2V, or
AUTO
—75 75
VIN 0.2V, f = 0 typ.
(2)
—6 6
Note:
1. At f = fMAX, address and data inputs are cycling at the maximum frequency, f = 0 means no input lines change.
2. Typical values are measured at VDD=2.5V, TA=25oC. Not 100% tested.
6
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
AC TEST CONDITIONS
Parameter Unit Unit
(2.5V-3.6V) (3.3V + 10%)
Input Pulse Level 0V to VDD V 0V to VDD V
Input Rise and Fall Times 1.5ns 1.5ns
Input and Output Timing VDD/2 VDD/2 + 0.05
and Reference Level (VRef)
Output Load See Figures 1a and 1b See Figures 1a and 1b
AC TEST LOADS
Figure 1a. Figure 1b.
30 pF
Including
jig and
scope
Zo=50Ω
OUTPUT VRef
50Ω
319 Ω
5 pF
Including
jig and
scope
353 Ω
OUTPUT
2.5V
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
READ CYCLE SWITCHING CHARACTERISTICS(1) (Over Operating Range)
-12 ns -15 ns
Symbol Parameter Min. Max. Min. Max. Unit
tRC Read Cycle Time 12 15 ns
tAA Address Access Time 12 15 ns
tOHA Output Hold Time 3 3 ns
tACE CE Access Time 12 15 ns
tDOE OE Access Time 6 7 ns
tHZOE(2) OE to High-Z Output 6 0 6 ns
tLZOE(2) OE to Low-Z Output 0 0 ns
tHZCE(2 CE to High-Z Output 0 6 0 6 ns
tLZCE(2) CE to Low-Z Output 3 3 ns
tBA LB, UB Access Time 6 7 ns
tHZB LB, UB to High-Z Output 0 6 0 6 ns
tLZB LB, UB to Low-Z Output 0 0 ns
Notes:
1. Test conditions assume signal transition times of 1.5 ns or less, timing reference levels of 1.25V, input pulse levels of 0V to
VDD V and output loading specified in Figure 1a.
2. Tested with the load in Figure 1b. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.
3. Not 100% tested.
8
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
READ CYCLE NO. 2(1,3)
AC WAVEFORMS
READ CYCLE NO. 1(1,2) (Address Controlled) (CS = OE = VIL, UB or LB = VIL)
Notes:
1. WE is HIGH for a Read Cycle.
2. The device is continuously selected. OE, CE, UB, or LB = VIL.
3. Address is valid prior to or coincident with CE LOW transition.
t
RC
t
OHA
t
AA
t
DOE
t
LZOE
t
ACE
t
LZCE
t
HZOE
HIGH-Z DATA VALID
t
HZB
ADDRESS
OE
CE
LB, UB
D
OUT
t
HZCE
t
BA
t
LZB
DATA VALID
PREVIOUS DATA VALID
tAA
tOHA tOHA
tRC
D
OUT
ADDRESS
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
WRITE CYCLE SWITCHING CHARACTERISTICS(1,2) (Over Operating Range)
-12 ns -15 ns
Symbol Parameter Min. Max. Min. Max. Unit
tWC Write Cycle Time 12 15 ns
tSCE CE to Write End 9 10 ns
tAW Address Setup Time 9 10 ns
to Write End
tHA Address Hold from Write End 0 0 ns
tSA Address Setup Time 0 0 ns
tPWB LB, UB Valid to End of Write 9 10 ns
tPWE1WE Pulse Width (OE = HIGH) 9 10 ns
tPWE2WE Pulse Width (OE = LOW) 11 12 ns
tSD Data Setup to Write End 9 9 ns
tHD Data Hold from Write End 0 0 ns
tHZWE(3) WE LOW to High-Z Output 6 7 ns
tLZWE(3) WE HIGH to Low-Z Output 3 3 ns
Notes:
1. Test conditions for IS61WV6416BLL assume signal transition times of 1.5ns or less, timing reference levels of 1.25V, input
pulse levels of 0V to VDD V and output loading specified in Figure 1a.
2. Tested with the load in Figure 1b. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.
3. The internal write time is defined by the overlap of CE LOW and UB or LB, and WE LOW. All signals must be in valid states to
initiate a Write, but any one can go inactive to terminate the Write. The Data Input Setup and Hold timing are referenced to
the rising or falling edge of the signal that terminates the write.
10
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ISSI
®
IS64WV6416BLL
IS61WV6416BLL
WRITE CYCLE NO. 1(1,2) (CE Controlled, OE = HIGH or LOW)
DATA UNDEFINED
t WC
VALID ADDRESS
t SCE
t PWE1
t PWE2
t AW
t HA
HIGH-Z
t PBW
t HD
t SA
t HZWE
ADDRESS
CE
UB, LB
WE
DOUT
DIN DATAIN VALID
t LZWE
t SD
UB_CEWR1.eps
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
WRITE CYCLE NO. 2(1)
(WE Controlled, OE = HIGH during Write Cycle)
DATA UNDEFINED
LOW
t
WC
VALID ADDRESS
t
PWE1
t
AW
t
HA
HIGH-Z
t
PBW
t
HD
t
SA
t
HZWE
ADDRESS
CE
UB, LB
WE
DOUT
DIN
OE
DATA
IN
VALID
t
LZWE
t
SD
UB_CEWR2.eps
WRITE CYCLE NO. 3 (WE Controlled: OE is LOW During Write Cycle)
DATA UNDEFINED
t
WC
VALID ADDRESS
LOW
LOW
t
PWE2
t
AW
t
HA
HIGH-Z
t
PBW
t
HD
t
SA
t
HZWE
ADDRESS
CE
UB, LB
WE
DOUT
DIN
OE
DATA
IN
VALID
t
LZWE
t
SD
UB_CEWR3.eps
12
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
DATA UNDEFINED
t WC
ADDRESS 1 ADDRESS 2
t WC
HIGH-Z
t PBW
WORD 1
LOW
WORD 2
UB_CEWR4.eps
t HD
t SA
t HZWE
ADDRESS
CE
UB, LB
WE
DOUT
DIN
OE
DATA
IN
VALID
t
LZWE
t SD
t PBW
DATA
IN
VALID
t
SD
t HD
t SA
t HA t HA
WRITE CYCLE NO. 4
(LB, UB Controlled, Back-to-Back Write)
(1,3)
Notes:
1. The internal Write time is defined by the overlap of CE = LOW, UB and/or LB = LOW, and WE = LOW. All signals must be
in valid states to initiate a Write, but any can be deasserted to terminate the Write. The t SA, t HA, t SD, and t HD timing is
referenced to the rising or falling edge of the signal that terminates the Write.
2. Tested with OE HIGH for a minimum of 4 ns before WE = LOW to place the I/O in a HIGH-Z state.
3. WE may be held LOW across many address cycles and the LB, UB pins can be used to control the Write function.
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
DATA RETENTION WAVEFORM (CE Controlled)
DATA RETENTION SWITCHING CHARACTERISTICS
Symbol Parameter Test Condition Operations Min. Typ.
(1)
Max. Unit
VDR VDD for Data Retention See Data Retention Waveform 1.8 3.6 V
IDR Data Retention Current VDD = 1.8V, CE VDD – 0.2V
COM.
—620 µA
IND.
—650
AUTO —675
tSDR Data Retention Setup Time See Data Retention Waveform 0 ns
tRDR Recovery Time See Data Retention Waveform tRC —— ns
Note:
1. Typical values are measured at V
DD
= 2.5V, T
A
= 25
O
C. Not 100% tested.
V
DD
CE V
DD
- 0.2V
t
SDR
t
RDR
V
DR
CE
GND
1.65V
1.4V
Data Retention Mode
14
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Rev. C
10/10/06
ISSI
®
IS64WV6416BLL
IS61WV6416BLL
Industrial Temperature Range: –40°C to +85°C
Speed (ns) Order Part No. Package
12 IS61WV6416BLL-12TI Plastic TSOP
12 IS61WV6416BLL-12TLI Plastic TSOP, Lead-free
12 IS61WV6416BLL-12KLI 400-mil Plastic SOJ, Lead-free
12 IS61WV6416BLL-12BI mini BGA (6mm x 8mm)
12 IS61WV6416BLL-12BLI mini BGA (6mm x 8mm), Lead-free
Temperature Range (A3): –40°C to +125°C
Speed (ns) Order Part No. Package
15 (121) IS64WV6416BLL-15TA3 Plastic TSOP
15 (121) IS64WV6416BLL-15TLA3 Plastic TSOP, Lead-free
15 (121) IS64WV6416BLL-15BA3 mini BGA (6mm x 8mm)
15 (121) IS64WV6416BLL-15BLA3 mini BGA (6mm x 8mm), Lead-free
Note:
1. Speed = 12ns for VDD = 3.3V + 10%. Speed = 15ns for VDD = 2.5V- 3.6V.
ORDERING INFORMATION
Commercial Temperature Range: 0°C to +70°C
Speed (ns) Order Part No. Package
12 IS61WV6416BLL-12KL 400-mil Plastic SOJ, Lead-free
PACKAGING INFORMATION ISSI®
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev. F
10/29/03
Copyright © 2003 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time
without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to
obtain the latest version of this device specification before relying on any published information and before placing orders for products.
400-mil Plastic SOJ
Package Code: K
Notes:
1. Controlling dimension:
millimeters.
2. BSC = Basic lead spacing
between centers.
3. Dimensions D and E1 do not
include mold flash protrusions
and should be measured from
the bottom of the package.
4. Reference document: JEDEC
MS-027.
SEATING PLANE
1
N
E1
D
E2
E
B
eA1
A
C
A2
b
N/2+1
N/2
Millimeters Inches Millimeters Inches Millimeters Inches
Symbol Min Max Min Max Min Max Min Max Min Max Min Max
No. Leads (N) 28 32 36
A 3.25 3.75 0.128 0.148 3.25 3.75 0.128 0.148 3.25 3.75 0.128 0.148
A1 0.64 — 0.025 — 0.64 — 0.025 — 0.64 — 0.025 —
A2 2.08 — 0.082 — 2.08 — 0.082 — 2.08 — 0.082 —
B 0.38 0.51 0.015 0.020 0.38 0.51 0.015 0.020 0.38 0.51 0.015 0.020
b 0.66 0.81 0.026 0.032 0.66 0.81 0.026 0.032 0.66 0.81 0.026 0.032
C 0.18 0.33 0.007 0.013 0.18 0.33 0.007 0.013 0.18 0.33 0.007 0.013
D 18.29 18.54 0.720 0.730 20.82 21.08 0.820 0.830 23.37 23.62 0.920 0.930
E 11.05 11.30 0.435 0.445 11.05 11.30 0.435 0.445 11.05 11.30 0.435 0.445
E1 10.03 10.29 0.395 0.405 10.03 10.29 0.395 0.405 10.03 10.29 0.395 0.405
E2 9.40 BSC 0.370 BSC 9.40 BSC 0.370 BSC 9.40 BSC 0.370 BSC
e 1.27 BSC 0.050 BSC 1.27 BSC 0.050 BSC 1.27 BSC 0.050 BSC
PA CKA GING INFORMATION ISSI
®
Copyright © 2003 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time
without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to
obtain the latest version of this device specification before relying on any published information and before placing orders for products.
2
Integrated Silicon Solution, Inc. — www.issi.com —
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Rev. F
10/29/03
Millimeters Inches Millimeters Inches Millimeters Inches
Symbol Min Max Min Max Min Max Min Max Min Max Min Max
No. Leads (N) 40 42 44
A 3.25 3.75 0.128 0.148 3.25 3.75 0.128 0.148 3.25 3.75 0.128 0.148
A1 0.64 — 0.025 — 0.64 — 0.025 — 0.64 — 0.025 —
A2 2.08 — 0.082 — 2.08 — 0.082 — 2.08 — 0.082 —
B 0.38 0.51 0.015 0.020 0.38 0.51 0.015 0.020 0.38 0.51 0.015 0.020
b 0.66 0.81 0.026 0.032 0.66 0.81 0.026 0.032 0.66 0.81 0.026 0.032
C 0.18 0.33 0.007 0.013 0.18 0.33 0.007 0.013 0.18 0.33 0.007 0.013
D 25.91 26.16 1.020 1.030 27.18 27.43 1.070 1.080 28.45 28.70 1.120 1.130
E 11.05 11.30 0.435 0.445 11.05 11.30 0.435 0.445 11.05 11.30 0.435 0.445
E1 10.03 10.29 0.395 0.405 10.03 10.29 0.395 0.405 10.03 10.29 0.395 0.405
E2 9.40 BSC 0.370 BSC 9.40 BSC 0.370 BSC 9.40 BSC 0.370 BSC
e 1.27 BSC 0.050 BSC 1.27 BSC 0.050 BSC 1.27 BSC 0.050 BSC
PACKAGING INFORMATION ISSI®
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev. D
01/15/03
Copyright © 2003 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time
without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to
obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Mini Ball Grid Array
Package Code: B (48-pin)
Notes:
1. Controlling dimensions are in millimeters.
mBGA - 6mm x 8mm
MILLIMETERS INCHES
Sym. Min. Typ. Max. Min. Typ. Max.
N0.
Leads 48
A 1.20 0.047
A1 0.24 0.30 0.009 0.012
A2 0.60 0.024
D 7.90 8.10 0.311 0.319
D1 5.25 BSC 0.207 BSC
E 5.90 6.10 0.232 0.240
E1 3.75 BSC 0.148 BSC
e 0.75 BSC 0.030 BSC
b 0.30 0.35 0.40 0.012 0.014 0.016
mBGA - 8mm x 10mm
MILLIMETER INCHES
Sym. Min. Typ. Max. Min. Typ. Max.
N0.
Leads 48
A 1.20 0.047
A1 0.24 0.30 0.009 0.012
A2 0.60 0.024
D 9.90 10.10 0.390 0.398
D1 5.25 BSC 0.207 BSC
E 7.90 8.10 0.311 0.319
E1 3.75 BSC 0.148 BSC
e 0.75 BSC 0.030 BSC
b 0.30 0.35 0.40 0.012 0.014 0.016
SEATING PLANE
A
A1
A2
A
B
C
D
E
F
G
H
e
e
D1
E1E
D
φ b (48x)
Top View Bottom View
6 5 4 3 2 11 2 3 4 5 6
A
B
C
D
E
F
G
H
PACKAGING INFORMATION ISSI®
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. F
06/18/03
Copyright © 2003 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time
without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to
obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Plastic TSOP
Package Code: T (Type II)
D
SEATING PLANE
b
eC
1N/2
N/2+1N
E1
A1
A
E
Lα
ZD
.
Notes:
1. Controlling dimension: millimieters,
unless otherwise specified.
2. BSC = Basic lead spacing
between centers.
3. Dimensions D and E1 do not
include mold flash protrusions and
should be measured from the
bottom of the package.
4. Formed leads shall be planar with
respect to one another within
0.004 inches at the seating plane.
Plastic TSOP (T - Type II)
Millimeters Inches Millimeters Inches Millimeters Inches
Symbol Min Max Min Max Min Max Min Max Min Max Min Max
Ref. Std.
No. Leads (N) 32 44 50
A 1.20 0.047 1.20 0.047 1.20 0.047
A1 0.05 0.15 0.002 0.006 0.05 0.15 0.002 0.006 0.05 0.15 0.002 0.006
b 0.30 0.52 0.012 0.020 0.30 0.45 0.012 0.018 0.30 0.45 0.012 0.018
C 0.12 0.21 0.005 0.008 0.12 0.21 0.005 0.008 0.12 0.21 0.005 0.008
D 20.82 21.08 0.820 0.830 18.31 18.52 0.721 0.729 20.82 21.08 0.820 0.830
E1 10.03 10.29 0.391 0.400 10.03 10.29 0.395 0.405 10.03 10.29 0.395 0.405
E 11.56 11.96 0.451 0.466 11.56 11.96 0.455 0.471 11.56 11.96 0.455 0.471
e 1.27 BSC 0.050 BSC 0.80 BSC 0.032 BSC 0.80 BSC 0.031 BSC
L 0.40 0.60 0.016 0.024 0.41 0.60 0.016 0.024 0.40 0.60 0.016 0.024
ZD 0.95 REF 0.037 REF 0.81 REF 0.032 REF 0.88 REF 0.035 REF
α