71V124SA12YG8

Overview

The 71V124SA12YG8 is a 3.3V CMOS static random-access memory (SRAM) organized as 128K x 8, providing a total capacity of 1 Megabit. It features asynchronous operation with a maximum access time of 12 nanoseconds and operates from a single 3.3V supply within a voltage range of 3.0V to 3.6V. The device utilizes a fully static circuit architecture that requires no clocks or refresh cycles. It employs LVTTL-compatible bidirectional inputs and outputs for direct interface with logic systems.

Feature Summary

• JEDEC center power and ground pinout configuration designed to reduce noise generation and improve system performance
• Fully static asynchronous circuitry eliminating the need for external clock signals or periodic refresh operations
• LVTTL-compatible bidirectional I/Os enabling direct connection to standard logic families without level shifting

Applications

• High-speed data buffering in embedded processing systems
• Cache memory implementation in industrial control equipment
• Temporary storage in telecommunications signal processing units

Procurement Notes

Verify the specific suffix against official Renesas documentation to confirm package type and temperature grade. Confirm current production status as discontinuation notices may apply to certain variants. Ensure compatibility with existing board layouts regarding the 32-pin TSOP II footprint and center power/ground pin assignment before finalizing procurement.

Selection Notes

Select this component when low-noise performance is critical due to its unique center power and ground pinout arrangement. It is suitable for designs requiring simple asynchronous interfacing without complex timing constraints. Verify that the 12ns access speed meets the system's latency requirements and that the commercial temperature range aligns with the operational environment.

Part Context

This part belongs to the 71V124 family of 3.3V SRAMs manufactured by Renesas Electronics. The family offers various access speeds and packaging options, including SOJ and TSOP II formats. The 71V124SA12 variant specifically denotes the 12ns speed grade within this asynchronous memory line, maintaining compatibility with standard parallel bus architectures.

Replacement Considerations

Check for exact pin-to-pin replacements within the same 71V124 series offering identical 12ns speed and 32-pin TSOP II packaging. Verify that any substitute maintains the JEDEC center power/ground pinout to preserve noise immunity characteristics.