Document
S-25A256B
www.sii-ic.com © Seiko Instruments Inc., 2011-2014
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
Rev.1.2_00
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 256 K-bit and the organization of 32768 words × 8-bit. Page write and Sequential read are available.
Caution Before using the product in automobile control unit or medical equipment, contact to SII is indispensable.
Features
Package
• Operating voltage range Read:
2.5 V ~ 5.5 V
Write:
2.5 V ~ 5.5 V
• Operation frequency: • Write time: • SPI mode (0, 0) and (1, 1) • Page write: • Sequential read • Write protect:
Protect area:
5.0 MHz max. 5.0 ms max.
64 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:
106 cycle / word *2 (Ta = +25°C) 3 × 105 cycle / word *2 (Ta = +125°C)
• Data retention:
100 years (Ta = +25°C)
50 years (Ta = +125°C)
• Memory capacity:
256 K-bit
• Initial delivery state:
FFh, SRWD = 0, BP1 = 0, BP0 = 0
• Burn-in specifications:
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)
*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.
Seiko Instruments Inc.
1
X Decoder Input Control Circuit
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM S-25A256B
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
VCC GND
Figure 1
Rev.1.2_00
Step-up Circuit
Page Latch Memory Cell Array Status
Memory Cell Array Y Decoder
2 Seiko Instruments Inc.
Rev.1.2_00
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM S-25A256B
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
S-25A256B 0A − J8T2 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
Fixed
Product name S-25A256B: 256 K-bit
Remark This IC is wafer level burn-in specification.
2. Package
Package Name 8-Pin SOP (JEDEC)
Table 1 Package Drawing Codes
Dimension
Tape
FJ008-A-P-SD
FJ008-D-C-SD
Reel FJ008-D-R-S1
3. Product name list
Table 2
Product Name
Capacity
Package
S-25A256B0A-J8T2U3
256 K bit
8-Pin SOP (JEDEC)
Remark This IC is wafer level burn-in specification.
Quantity 4000 pcs / reel
Pin Configuration
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
*1. Do not use it in "High-Z".
Seiko Instruments Inc.
3
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM S-25A256B
Rev.1.2_00
Absolute Maximum Ratings
Table 4
Item Symbol
Absolute Maximum Rating
Unit
Power supply voltage
VCC
−0.3 to +6.5
V
Input voltage
VIN
−0.3 to +6.5
V
Output voltage
VOUT
−0.3 to VCC + 0.3
V
Operation ambient temperature Topr
−40 to +125
°C
Storage temperature
Tstg
−65 to +150
°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 5
Item
Power supply voltage High level input voltage Low level input voltage
Symbol
VCC VIH VIL
Condition
Read Write VCC = 2.5 V to 5.5 V VCC = 2.5 V to 5.5 V
Ta = −40°C to +125°C
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 6
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
Item Symbol
Endurance
NW
*1. For each address (Word: 8-bit)
Table 7
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 8
Item Data retention
Symbol
Operation Ambient Temperature
Min.
Max.
- Ta = +25°C Ta = −40°C to.