25AA256-E/MF

The Microchip 25AA256 is a 256 Kb Serial EEPROM utilizing theindustry standard Serial Peripheral Interface (SPI) compatible serial bus. Thedevice is organized as one block of 32,768 x 8-bit and is optimized for use in consumer electronics, industrial, medical,and automotive applications where reliable and dependable nonvolatile memorystorage is essential. Software write protection allows the user to protect ¼,½, or the entire memory array. A hardware write protect pin is also provided,which additionally protects against inadvertent writes to the status register.The EEPROM is available in a variety of space-saving packaging options.

Key Features

• 32,768 x 8-bit (256 Kbit)
• Supports SPI modes 0 and 3
• Up to 10 MHz clock frequency
• Self-Timed Erase and Write Cycles (5 ms max.)
• Read current: 6 mA (Max) at 10 MHz
• Write current: 5 mA (Max) at 5.5 V
• Standby current: 5 µA (Max) at 5.5 V
• Block Write Protection: Protect 1/4, 1/2 or Entire Array
• More than 1 million erase/write cycles
• Data retention > 200 years
• Industrial (I): -40°C to 85°C
• Extended (E): -40°C to +125°C
• Automotive AECQ-100 Qualified1
• Factory Programming Available
• Available in standard packages including 8-lead PDIP, SOIC, SOIJ, and TSSOP, as well as 5x6mm DFN