AT25640B in 25LCxx / AT25 SPI EEPROM Family
The AT25640B is a high-performance 64Kbit Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) family from Microchip Technology. Designed for industrial and automotive environments, these devices utilize the Serial Peripheral Interface (SPI) to provide high-speed data transfers. They are primarily used for non-volatile storage of configuration parameters, calibration data, and system logs in space-constrained embedded systems, offering reliable retention and high endurance across a wide voltage range of 1.8V to 5.5V.
Variants in This Sub-Family
Variants within the AT25640B family are distinguished primarily by their package types, including 8-lead SOIC, TSSOP, and UDFN. Temperature ratings also vary between industrial-grade (-40 to +85C) and automotive-grade (-40 to +125C). Additionally, shipping options like bulk tubes versus Tape and Reel (T suffix) allow engineers to choose based on their high-volume manufacturing requirements.
