Microchip AT25040B-XPD-T, 4kbit EEPROM Chip, 5ns 8-Pin TSSOP SPI

The Microchip 4 Kb Serial EEPROM utilizing the industry standard Serial Peripheral Interface (SPI) compatible serial bus. The device is organized as one block of 512 x 8-bit and is optimized for use in consumer electronics, industrial, medical, and automotive applications where reliable and dependable non-volatile memory storage is essential. 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.

More than 1 million erase/write cycles
Data retention 100 years
Automotive AECQ-100 Qualified1
Factory Programming Available
Up to 20 MHz clock frequency