Functional Description
The Cypress STK22C48 is a faststatic RAM with a nonvolatile element in each memory cell. The embedded nonvolatile elements incorporate QuantumTrap technology producing the world’s most reliable nonvolatile memory.

FEATUREs
■25 ns and 45 ns access times
■Hands off automatic STORE on power down with external 68µF capacitor
■STORE to QuantumTrap™ nonvolatile elements is initiated by software, hardware, or AutoStore™ on power down
■RECALL to SRAM initiated by software or power up
■Unlimited Read, Write, and Recall cycles
■1,000,000 STORE cycles to QuantumTrap
■100 year data retention to QuantumTrap
■Single 5V+10% operation
■Commercial and industrial temperatures
■28-pin 300 mil and (330 mil) SOIC package
■RoHS compliance