71321LA20PF8

Memory IC Overview

The Renesas Electronics Corporation 71321LA20PF8 is a high-speed, 16Kb (2K x 8) dual-port static random-access memory (SRAM). It features true dual-ported memory cells allowing simultaneous access to the same location. The device operates asynchronously with a maximum access time of 20 ns and supports a single 5V ±10% power supply. It includes internal interrupt logic for interprocessor communications and on-chip port arbitration. The component is housed in a 64-pin TQFP package and complies with RoHS3 standards.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations by two processors.
• Integrated internal interrupt logic providing two INT flags for efficient port-to-port communication without external discrete logic.
• On-chip port arbitration logic manages bus conflicts automatically during simultaneous access attempts.
• Automatic power-down feature controlled by chip enable signals to minimize standby power consumption.

Memory IC Applications

• Interprocessor communication links in multi-core or distributed processing systems
• Master dual-port RAM configuration in 16-bit or wider data bus expansion systems
• Battery-backed volatile memory applications requiring 2V data retention

Memory IC Procurement Notes

Verify the specific suffix 'PFG8' against the requested 'PF8'. Datasheets indicate 'PFG8' as the standard RoHS-compliant 64-TQFP variant. Confirm if 'PF8' denotes an older non-RoHS version or a typo. Ensure compatibility with system voltage levels and interface requirements before procurement.

Memory IC Selection Notes

Select this component when asynchronous dual-port operation with integrated arbitration is required. It serves as a master device in 16-bit configurations paired with slave counterparts. Verify that the 20 ns access speed meets timing constraints and that the 64-pin TQFP footprint fits the PCB layout.

Memory IC Part Context

This part belongs to the 71321 series of high-speed dual-port SRAMs. It is functionally similar to the IDT71321LA20PFG8. The 'LA' designation indicates industrial temperature range availability and battery backup support. It replaces older SA-series variants which lack RoHS compliance.

Memory IC Replacement Considerations

The 71321SA20PF8 is listed as a discontinued substitute. The 71321LA20PFG8 is the recommended active replacement offering RoHS3 compliance. Verify pinout compatibility between PF8 and PFG8 suffixes before substitution.