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AT25256 - SPI Serial EEPROMs

Download the AT25256 datasheet PDF. This datasheet also covers the AT25128 variant, as both devices belong to the same spi serial eeproms family and are provided as variant models within a single manufacturer datasheet.

General Description

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.

Key Features

  • Serial Peripheral Interface (SPI) Compatible.
  • Supports SPI Modes 0 (0,0) and 3 (1,1).
  • Low-voltage and Standard-voltage Operation.
  • 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 Har.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AT25128-Atmel.pdf) that lists specifications for multiple related part numbers.

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Features • Serial Peripheral Interface (SPI) Compatible • Supports SPI Modes 0 (0,0) and 3 (1,1) • Low-voltage and Standard-voltage Operation • • • • • • • • – 2.7 (VCC = 2.7V to 5.5V) – 1.8 (VCC = 1.8V to 5.