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CY15B256Q, 256-Kbit (32K X 8) Automotive-E Serial (SPI) F-RAM | Cypress Semiconductor

CY15B256Q, 256-Kbit (32K X 8) Automotive-E Serial (SPI) F-RAM

Last Updated: 
Jan 11, 2019

256-Kbit (32K × 8) Automotive Serial (SPI) F-RAM


  • 256-Kbit ferroelectric random access memory (F-RAM) logically organized as 32K × 8
    • High-endurance 100 trillion (1014) read/writes
    • 151-year data retention
    • NoDelay™ writes
    • Advanced high-reliability ferroelectric process
  • Very fast serial peripheral interface (SPI)
    • Up to 40-MHz frequency
    • Direct hardware replacement for serial flash and EEPROM
    • Supports SPI mode 0 (0, 0) and mode 3 (1, 1)
  • For more, see pdf

Functional Overview

The CY15B256Q is a 256-Kbit nonvolatile memory employing an advanced ferroelectric process. An F-RAM is nonvolatile and performs reads and writes similar to a RAM. It provides reliable data retention for 151 years while eliminating the complexities, overhead, and system-level reliability problems caused by serial flash, EEPROM, and other nonvolatile memories.