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