AT25256B - SPI Serial EEPROM

Atmel (now Microchip Technology)

Download the AT25256B datasheet PDF. This datasheet also covers the AT25128B variant, as both devices belong to the same spi serial eeprom family and are provided as variant models within a single manufacturer datasheet.

📥 Download Datasheet

AT25256B spi serial eeprom by Atmel (now Microchip Technology) - Datasheet Preview — Note: The manufacturer provides a single datasheet file (AT25128B-ATMELCorporation.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	AT25256B
Manufacturer	Atmel (now Microchip Technology)
File Size	437.07 KB
Description	SPI Serial EEPROM
Datasheet	AT25256B Datasheet

General Description

The Atmel® AT25128B/256B 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.

Overview

AT25128B and AT25256B SPI Serial EEPROM 128K (16,384 x 8), 256K (32,768 x.

Key Features

Serial Peripheral Interface (SPI) Compatible.
Supports SPI Modes 0 (0,0) and 3 (1,1) ̶ Data Sheet Describes Mode 0 Operation.
Low-voltage and Standard-voltage Operation ̶ VCC = 1.8V to 5.5V.
20MHz Clock Rate (5V).
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 (5ms max).

📁 Similar Datasheet

Brand Logo	Part Number	Description	Manufacturer
	AT25256B	SPI Serial EEPROM	Microchip
	AT25256	SPI Serial EEPROMs	Atmel

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