CY15B256Q Datasheet | Cypress

256-Kbit (32K × 8) Automotive Serial (SPI) F-RAM 256-Kbit (32K × 8) Automotive Serial (SPI) F-RAM Features Functional Description - 256-Kbit ferroelectric random access memory (F-RAM) logically organized as 32K × 8 - High-endurance 100 trillion (1014) read/writes - 151-year data retention (See the Data Retention and Endurance table) - No Delay™ 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) - Sophisticated write-protection scheme - Hardware protection using the Write Protect (WP) pin - Software protection using Write Disable instruction - Software block protection for 1/4, 1/2, or entire array - Device ID - Manufacturer ID and Product ID - Low power consumption - 2.5-m A active current at 40 MHz - 150-A standby current - 8-A sleep mode current - Low-voltage operation: VDD = 2.0 V to 3.6 V - Automotive-A temperature: - 40 C to +85 C - 8-pin small outline integrated circuit (SOIC) package - Restriction of hazardous substances (Ro HS) pliant 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 plexities, overhead, and system-level reliability problems caused by serial flash, EEPROM, and other nonvolatile memories. Unlike serial flash and EEPROM, the CY15B256Q performs write operations at bus speed. No write delays are incurred. Data is written to the memory array immediately after each byte is successfully transferred to the device. The next bus cycle can mence without the need for data polling. In addition, the product offers substantial write endurance pared with other nonvolatile memories. The CY15B256Q is capable of supporting 1014 read/write cycles, or 100 million times more...