AT25256 - Atmel

AT25256 SPI Serial EEPROMs

The AT25128/256 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 commercial applications where low-power and low-voltage operation are essential. The devices are available in space saving 8-lead PDIP (AT2.

Features

• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
• Low-voltage and Standard-voltage Operation
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  – 2.7 (VCC = 2.7V to 5.5V)
  – 1.8 (VCC = 1.8V to 5.5V) 3 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 Typical) High-reliability
  – Endurance: 100,000 Write Cycles
  – Data Retention: >200 Years Automotive Grade, Extended Temperature and Lead-Free Device.