STK16C88-3

256 Kbit (32K x 8) AutoStore+ nvSRAM

Features

Fast 35ns Read access and R/W cycle time

Directly replaces battery-backed SRAM modules such as Dallas/Maxim DS1230W

Automatic nonvolatile STORE on power loss

Nonvolatile STORE under Software control

Automatic RECALL to SRAM on power up

Unlimited Read/Write endurance

1,000,000 STORE cycles

100 year data retention

Single 3.3V+0.3V power supply

Commercial and Industrial Temperatures

28-pin (600 mil) PDIP package

RoHS compliance

Functional Description

The Cypress STK16C88-3 is a 256Kb fast static RAM with a nonvolatile element in each memory cell. The embedded nonvolatile elements incorporate QuantumTraptechnology producing the world’s most reliable nonvolatile memory. The SRAM provides unlimited read and write cycles, while independent, nonvolatile data resides in the highly reliable QuantumTrap cell. Data transfers from the SRAM to the nonvolatile elements (the STORE operation) takes place automatically at power down. On power up, data is restored to the SRAM (the RECALL operation) from the nonvolatile memory. Both the STORE and RECALL operations are also available under software control.

Logic Block Diagram

Cypress Semiconductor Corporation • 198 Champion Court

San Jose, CA 95134-1709

408-943-2600

Document Number: 001-50594 Rev. **

 

Revised January 29, 2009

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Cypress STK16C88-3 manual Features, Functional Description, Logic Block Diagram