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FM25640B: 64-Kbit (8 K × 8) Serial (SPI) Automotive F-RAM | Cypress Semiconductor

FM25640B: 64-Kbit (8 K × 8) Serial (SPI) Automotive F-RAM

Last Updated: 
Nov 10, 2020

64-Kbit (8 K × 8) Serial (SPI) Automotive F-RAM


  • 64-Kbit ferroelectric random access memory (F-RAM) logically organized as 8 K × 8
  • Very fast serial peripheral interface (SPI)
  • Sophisticated write protection scheme
  • Low power consumption
  • Voltage operation: VDD = 4.5 V to 5.5 V
  • Automotive-E temperature: -40 °C to +125 °C
  • For more, see pdf

Functional Overview

The FM25640B is a 64-Kbit nonvolatile memory employing an advanced ferroelectric process. A ferroelectric random access memory or F-RAM is nonvolatile and performs reads and writes similar to a RAM. It provides reliable data retention for 121 years while eliminating the complexities, overhead, and system level reliability problems caused by serial flash, EEPROM, and other nonvolatile memories.

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