STK12C68-WF25I

Overview

The Simtek STK12C68-WF25I is a 64Kb (8K x 8) non-volatile static RAM utilizing QuantumTrap technology. It integrates an SRAM array with EEPROM storage to retain data during power loss. The device features a 25 ns access time and operates on a single 5V supply. It supports asynchronous operation with 3-state outputs in a 28-pin LCC package.

Feature Summary

• Automatic STORE of data upon power loss or via hardware/software control
• Unlimited read/write endurance for the SRAM array
• Automatic RECALL of stored data to SRAM upon power restoration

Applications

• Transaction processing systems requiring instant-on capability
• Data logging applications needing reliable scratchpad information
• Portable medical equipment and military systems

Procurement Notes

Verify the specific suffix 'WF25I' against official Simtek or Infineon documentation, as standard datasheets typically list 'W25I'. Confirm package type and temperature range match requirements. Check for end-of-life status and RoHS compliance details from the manufacturer.

Selection Notes

Select this component for applications demanding high-speed SRAM performance with non-volatile retention without battery backup. Ensure the 25 ns speed meets system timing constraints. Verify that the 28-pin LCC package fits the PCB layout and that the industrial temperature range is sufficient.

Part Context

The STK12C68 series belongs to Simtek's AutoStore nvSRAM family, later acquired by Cypress and then Infineon. These devices combine the speed of SRAM with the non-volatility of EEPROM using QuantumTrap technology, targeting cost-sensitive applications above basic consumer electronics.