FM25V40 Datasheet (Cypress Semiconductor) - 4-Mbit (512K x 8) Serial (SPI) F-RAM

FM25V40, 4-Mbit (512K x 8) Serial (SPI) F-RAM

CS Input Chip Select.

This active LOW input activates the device.

When HIGH, the device enters low-power standby mode, ignores other inputs, and the output is tristated.

When LOW, the device internally activates the SCK signal.

A falling edge on CS must occur before every opcode.

SCK SI[1] SO[

FM25V40 Features

* 4-Mbit ferroelectric random access memory (F-RAM) logically organized as 512 K × 8

* High-endurance 100 trillion (1014) read/writes

* 10-year data retention

* NoDelay™ writes

* Advanced high-reliability ferroelectric process

* Very fast serial peripheral interface (SPI)