71321SA55TF8

Memory IC Overview

The 71321SA55TF8 is a high-speed 16Kb (2K x 8) dual-port static RAM manufactured by Renesas Electronics Corporation. It features asynchronous parallel interface operation with a 55 ns access time and operates on a single 5V ±10% power supply within the 4.5V to 5.5V range. The device utilizes true dual-ported memory cells allowing simultaneous independent access to any memory location from either port. It is housed in a 64-TQFP surface-mount package measuring 10x10 mm and supports an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• True dual-ported architecture enabling simultaneous independent read/write access to shared memory locations without conflict
• Integrated internal interrupt logic for efficient interprocessor communication between connected systems
• Automatic power-down mode controlled by chip enable signals to minimize standby power consumption
• On-chip port arbitration logic with BUSY output flag to manage concurrent access requests

Memory IC Applications

• Interprocessor communication buffers in multi-core or distributed processing architectures
• High-speed data buffering in telecommunications equipment requiring low-latency access
• Master dual-port SRAM configurations expanding bus width when paired with slave devices
• Industrial control systems operating within extended temperature environments

Memory IC Procurement Notes

Verify component authenticity through authorized distributors as this part may be obsolete. Confirm RoHS compliance status and moisture sensitivity level before procurement. Check for valid replacement options such as the 71321LA series if lead-free requirements are mandatory. Ensure packaging specifications match assembly line capabilities.

Memory IC Selection Notes

Select this component for applications requiring fully asynchronous dual-port memory with integrated interrupt flags. Consider the 71321LA series for industrial temperature ranges and RoHS compliance. Evaluate pin compatibility and voltage levels against existing system designs. Verify package dimensions fit the target PCB layout constraints.

Memory IC Part Context

The 71321SA55TF8 belongs to the Renesas 71321 family of dual-port SRAMs designed for high-performance data storage. This family includes variants with different access times and temperature grades. The SA suffix typically denotes standard commercial or specific industrial grades depending on the manufacturer's coding conventions at the time of production.

Memory IC Replacement Considerations

The 71321LA25TFG8 is listed as an upgrade alternative. Verify electrical compatibility and package pinout alignment before substitution. Note that LA series parts may offer improved environmental compliance compared to the SA series.