S-25A640B

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 le...