Description

The AT25128A/256A provides 131,072/262,144 bits of serial electrically-erasable programmable read-only memory (EEPROM) organized as 16,384/32,768 words of 8 bits each. The device is optimized for use in many industrial and automotive applications where low-power and low-voltage operation are essential. The devices are available in space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages.

Features

? Serial Peripheral Interface (SPI) Compatible

? Supports SPI Modes 0 (0,0) and 3 (1,1)

– Data Sheet Describes Mode 0 Operation

? Standard-voltage Operation

– 2.7 (VCC = 2.7V to 5.5V)

? Automotive Temperature Range ?40°C to +125°C

? 5 MHz Clock Rate

? 64-byte Page Mode and Byte Write Operation

? Block Write Protection

– Protect 1/4, 1/2, or Entire Array

? Write Protect (WP) Pin and Write Disable Instructions for both Hardware and Software Data Protection

? Self-timed Write Cycle (5 ms max)

? High Reliability

– Endurance: 1 Million Write Cycles

– Data Retention: >100 Years

? 8-lead JEDEC SOIC and 8-lead TSSOP Packages