You are here

CY15B256J, 256-Kbit (32K × 8) Automotive Serial (I2C) F-RAM | Cypress Semiconductor

CY15B256J, 256-Kbit (32K × 8) Automotive Serial (I2C) F-RAM

Last Updated: 
Mar 07, 2018

256-Kbit (32K × 8) Automotive Serial (I2C) 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
  • Fast two-wire serial interface (I2C)
    • Up to 3.4-MHz frequency
    • Direct hardware replacement for serial EEPROM
    • Supports legacy timings for 100 kHz and 400 kHz
  • For more, see pdf

Functional Overview

The CY15B256J 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 EEPROM and other nonvolatile memories.