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 PDIP, 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
●• Medium-voltage and Standard-voltage Operation
● – 5.0 (VCC = 4.5V to 5.5V)
● – 2.7 (VCC = 2.7V to 5.5V)
●• Extended 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: 100,000 Write Cycles
● – Data Retention: >100 Years
●• 8-lead PDIP, 8-lead JEDEC SOIC, and 8-lead TSSOP Packages
