Cypress STK16C88 User Manual

Stk16c88, Features, Functional description

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STK16C88

256 Kbit (32K x 8) AutoStore+ nvSRAM

Cypress Semiconductor Corporation

198 Champion Court

San Jose

,

CA 95134-1709

408-943-2600

Document Number: 001-50595 Rev. **

Revised January 29, 2009

Features

25 ns and 45 ns access times

Directly replaces battery-backed SRAM modules such as
Dallas/Maxim DS1230 AB

Automatic nonvolatile STORE on power loss

Nonvolatile STORE under Software control

Automatic RECALL to SRAM on power up

Unlimited Read/Write endurance

Unlimited RECALL cycles

1,000,000 STORE cycles

100 year data retention

Single 5V+10% power supply

Commercial and Industrial Temperatures

28-pin (600 mil) PDIP package

RoHS compliance

Functional Description

The Cypress STK16C88 is a 256 Kb fast static RAM with a
nonvolatile element in each memory cell. The embedded
nonvolatile elements incorporate QuantumTrap™ technology
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.

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