Document
S-25A640A, S-25A640B
www.sii-ic.com © Seiko Instruments Inc., 2008-2014
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
Rev.3.2_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 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 SII 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 = +25°C) 5 × 105 cycle / word*2 (Ta = +125°C) 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:
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.
Seiko Instruments Inc.
1
X Decoder Input Control Circuit
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_00
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 Seiko Instruments Inc.
Rev.3.2_00
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM S-25A640A, S-25A640B
.