STK17TA8-RF25

Overview

The STK17TA8-RF25 is a non-volatile static random-access memory (nvSRAM) device manufactured by Simtek. It integrates a 128 Kbit memory array organized as 16,384 words by 8 bits. The component features an integrated real-time clock (RTC) and calendar functionality. It utilizes AutoStore technology to automatically transfer data from volatile SRAM to non-volatile ferroelectric memory during power loss. The device operates within a standard voltage range and supports serial or parallel interfaces depending on the specific suffix configuration.

Feature Summary

• AutoStore automatic data preservation mechanism ensures data integrity during unexpected power failures without user intervention.
• Integrated real-time clock with calendar capabilities provides continuous timekeeping independent of system power.
• Combines high-speed volatile SRAM performance with non-volatile storage density in a single package.

Applications

• Industrial control systems requiring reliable event logging
• Medical equipment needing persistent patient data storage
• Automotive electronics for black box recording applications

Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet to confirm interface type and temperature grade. Confirm availability status as legacy components may have limited production runs. Ensure pin compatibility with existing PCB layouts before procurement.

Selection Notes

Select this component when both high-speed read/write access and permanent data retention are required without external backup batteries. Compare memory density requirements against similar nvSRAM families. Verify operating temperature range matches the intended environmental conditions.

Part Context

This part belongs to the STK17T series of AutoStore nvSRAMs. It shares architectural similarities with other members like the STK17T88 but offers higher memory capacity. The series is designed to replace battery-backed SRAM solutions in space-constrained designs.

Replacement Considerations

Check for direct cross-references from Cypress Semiconductor, which acquired Simtek. Evaluate CY14B256K series devices for potential functional equivalence. Verify pinout and command set compatibility before substituting.