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S-25A640A, S-25A640B
www.ablicinc.com
© ABLIC Inc., 2008-2014
FOR AUTOMOTIVE 125°C OPERATION
SPI SERIAL E2PROM
Rev.3.2_02
This IC is a SPI serial E2PROM which operates under the high temperature, at high speed, with the wide range operation for
automotive components. This IC has the capacity of 64 K-bit and the organization of 8192 words 8-bit. Page write and
Sequential read are available.
Caution Before using the product in automobile control unit or medical equipment, contact to ABLIC Inc. is
indispensable.
Features
Packages
Operating voltage range
Read:
2.5 V ~ 5.5 V
Write:
2.5 V ~ 5.5 V
Operation frequency
S-25A640A:
5.0 MHz max.
S-25A640B:
6.5 MHz max.
Write time
S-25A640A:
4.0 ms max.
S-25A640B:
5.0 ms max.
SPI mode (0, 0) and (1, 1)
Page write:
Sequential read
Write protect:
Protect area:
32 bytes / page
Software, Hardware
25%, 50%, 100%
Monitoring of a write memory state by the status register
Function to prevent malfunction by monitoring clock pulse
Write protect function during the low power supply voltage
CMOS schmitt input ( CS , SCK, SI, WP , HOLD )
Endurance*1
S-25A640A:
S-25A640B:
106 cycle / word*2 (Ta = 25C)
5 105 cycle / word*2 (Ta = 125C)
106 cycle / word*2 (Ta = 25C)
3 105 cycle / word*2 (Ta = 125C)
Data retention:
100 years (Ta = 25C)
50 years (Ta = 125C)
Memory capacity:
64 K-bit
Initial delivery state:
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Burn-in specification:
Wafer level burn-in
Operation temperature range: Ta = 40°C to 125°C
Lead-free (Sn 100%), halogen-free*3
AEC-Q100 qualified*4
8-Pin SOP (JEDEC)
5
8
4
1
(5.0 6.0 t1.75 mm)
8-Pin TSSOP
5
8
4
1
(3.0 6.4 t1.1 mm)
TMSOP-8
5
8
4
1
(2.9 4.0 t0.8 mm)
*1. Refer to "Endurance" for details.
*2. For each address (Word: 8-bit)
*3. Refer to "Product Name Structure" for details.
*4. Contact our sales office for details.
Remark Refer to "3. Product name list" in "Product Name Structure" for details of package and product.
1

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FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A640A, S-25A640B
Block Diagram
CS
SCK
SI
HOLD
WP
SO
Voltage Detector
Clock Counter
Data Register
Mode
Decoder
Output
Control
Circuit
Address Register
Status Register
Read Circuit
Rev.3.2_02
Step-up Circuit
Page Latch
Memory
Cell
Array
Status
Memory Cell Array
Y Decoder
VCC
GND
Figure 1
AEC-Q100 Qualified
This IC supports AEC-Q100 for operation temperature grade 1.
Contact our sales office for details of AEC-Q100 reliability specification.
Product Name Structure
1. Product name
1. 1 S-25A640A
S-25A640A 0A J8T2 U D
Fixed
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and IC packing specification*1
J8T2: 8-Pin SOP (JEDEC), Tape
Fixed
Product name
S-25A640A: 64 K-bit
2

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Rev.3.2_02
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A640A, S-25A640B
1. 2 S-25A640B
S-25A640B 0A xxxx U 3
*1. Refer to the tape drawing.
Fixed
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and IC packing specification*1
J8T2:
8-Pin SOP (JEDEC), Tape
T8T2: 8-Pin TSSOP, Tape
K8T2: TMSOP-8, Tape
Fixed
Product name
S-25A640B: 64 K-bit
Remark This IC is wafer level burn-in specification.
2. Packages
Package Name
8-Pin SOP (JEDEC)
8-Pin TSSOP
TMSOP-8
Table 1 Package Drawing Codes
Dimension
Tape
FJ008-A-P-SD
FT008-A-P-SD
FM008-A-P-SD
FJ008-D-C-SD
FT008-E-C-SD
FM008-A-C-SD
Reel
FJ008-D-R-S2
FT008-E-R-S2
FM008-A-R-SD
3. Product name list
Table 2
Product Name
Capacity
Package
Quantity
S-25A640A0A-J8T2UD
64 K bit
8-Pin SOP (JEDEC)
2000 pcs / reel
S-25A640B0A-J8T2U3
64 K bit
8-Pin SOP (JEDEC)
4000 pcs / reel
S-25A640B0A-T8T2U3
64 K bit
8-Pin TSSOP
4000 pcs / reel
S-25A640B0A-K8T2U3
64 K bit
TMSOP-8
4000 pcs / reel
Remark 1. Please contact our sales office for products with product name structure other than those
specified above.
2. This IC is wafer level burn-in specification.
3

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FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A640A, S-25A640B
Rev.3.2_02
Pin Configurations
1. 8-Pin SOP (JEDEC)
Top view
1
2
3
4
Figure 2
8
7
6
5
Pin No.
1
2
3
4
5
6
7
8
Symbol
CS *1
SO
WP *1
GND
SI*1
SCK*1
HOLD *1
VCC
Table 3
Description
Chip select input
Serial data output
Write protect input
Ground
Serial data input
Serial clock input
Hold input
Power supply
2. 8-Pin TSSOP
Top view
1
2
3
4
Figure 3
8
7
6
5
Pin No.
1
2
3
4
5
6
7
8
Symbol
CS *1
SO
WP *1
GND
SI*1
SCK*1
HOLD *1
VCC
Table 4
Description
Chip select input
Serial data output
Write protect input
Ground
Serial data input
Serial clock input
Hold input
Power supply
3. TMSOP-8
Top view
1
2
3
4
8
7
6
5
Figure 4
*1. Do not use it in "High-Z".
Pin No.
1
2
3
4
5
6
7
8
Symbol
CS *1
SO
WP *1
GND
SI*1
SCK*1
HOLD *1
VCC
Table 5
Description
Chip select input
Serial data output
Write protect input
Ground
Serial data input
Serial clock input
Hold input
Power supply
4

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Rev.3.2_02
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A640A, S-25A640B
Absolute Maximum Ratings
Table 6
Item
Symbol
Absolute Maximum Rating
S-25A640A
S-25A640B
Unit
Power supply voltage
Input voltage
Output voltage
Operation ambient temperature
Storage temperature
VCC
VIN
VOUT
Topr
Tstg
0.3 to 7.0
0.3 to 6.5
0.3 to 7.0
0.3 to 6.5
0.3 to VCC 0.3
40 to 125
65 to 150
V
V
V
°C
°C
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
Recommended Operating Conditions
Table 7
Item
Symbol
Condition
Power supply voltage
High level input voltage
Low level input voltage
VCC
VIH
VIL
Read
Write
VCC = 2.5 V to 5.5 V
VCC = 2.5 V to 5.5 V
Ta = 40C to 125C
Min. Max.
2.5 5.5
2.5 5.5
0.7 VCC
0.3
VCC 1.0
0.3 VCC
Unit
V
V
V
V
Pin Capacitance
Table 8
Item
Input capacitance
Output capacitance
Symbol
CIN
COUT
Condition
VIN = 0 V ( CS , SCK, SI, WP , HOLD )
VOUT = 0 V (SO)
(Ta = 25°C, f = 1.0 MHz, VCC = 5.0 V)
Min.
Max.
Unit
8 pF
10 pF
Endurance
1. S-25A640A
Item Symbol
Endurance
NW
*1. For each address (Word: 8-bit)
Table 9
Operation Ambient Temperature
Ta = 40°C to 85°C
Ta = 40°C to 105°C
Ta = 40°C to 125°C
Min.
106
8 105
5 105
Max.
Unit
cycle / word*1
cycle / word*1
cycle / word*1
2. S-25A640B
Item
Symbol
Endurance
NW
*1. For each address (Word: 8-bit)
Table 10
Operation Ambient Temperature
Ta = 25°C
Ta = 40°C to 85°C
Ta = 40°C to 105°C
Ta = 40°C to 125°C
Min.
106
7 105
5 105
3 105
Max.
Unit
cycle / word*1
cycle / word*1
cycle / word*1
cycle / word*1
Data Retention
Table 11
Item
Symbol
Operation Ambient Temperature
Min.
Max.
Data retention
Ta = 25°C
Ta = 40°C to 125°C
100
50
Unit
year
year
5