71321SA25PF

Memory IC Overview

The Renesas Electronics Corporation 71321SA25PF is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It features a storage capacity of 16 kbit organized as 2K x 8 bits. The component supports parallel interface operations with a maximum access time of 25 ns. It operates on a single 5V power supply within a voltage range of 4.5 V to 5.5 V. The device includes internal interrupt logic for interprocessor communications and automatic power-down capabilities controlled by chip enable signals.

Memory IC Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from both ports without conflict.
• Integrated interrupt flags facilitate direct port-to-port communication, eliminating the need for additional discrete logic in master-slave configurations.
• Automatic power-down mode reduces standby power consumption when the chip enable signal is deactivated.

Memory IC Applications

• Interprocessor communication buffers in multi-core or multi-microcontroller systems
• Master dual-port RAM units in 16-bit or wider data bus expansion architectures
• High-speed data buffering in industrial control applications requiring low latency

Memory IC Procurement Notes

Verify RoHS compliance status and moisture sensitivity level prior to procurement, as specifications may vary by manufacturing date code. Confirm package availability in TQFP formats, as lead times can extend significantly due to production cycles. Ensure compatibility with existing system voltage levels and temperature ranges before finalizing orders.

Memory IC Selection Notes

Select this component for designs requiring true dual-port functionality with integrated interrupt signaling. Compare against the 71321LA series if battery backup retention is required, as the SA variant lacks this feature. Verify that the 25 ns access time meets the system timing requirements and that the 52-pin or 64-pin TQFP package fits the PCB layout constraints.

Memory IC Part Context

The 71321SA series belongs to Renesas' high-speed dual-port SRAM family, designed for efficient data sharing between processors. This specific model represents the standard 5V operation variant with 25 ns speed grade. It serves as a foundational component for synchronous data transfer applications where deterministic access times are critical.

Memory IC Replacement Considerations

The 71321SA25PFGI is a verified substitute offering identical electrical characteristics in a compatible TQFP package. Other variants within the 71321SA/LA family may serve as alternatives if pinout and speed parameters align with design requirements.