71321LA35PF8

Memory IC Overview

The Renesas Electronics Corporation 71321LA35PF8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) integrated circuit. It features a storage capacity of 16 kilobits organized as 2K x 8 bits. The device supports parallel interface operation with an access time of 35 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The component is housed in a 64-pin Thin Quad Flat Package (TQFP) and is designed for surface-mount installation. It includes internal interrupt logic for interprocessor communications and automatic power-down capabilities.

Memory IC Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from both ports without conflict.
• Integrated internal interrupt logic facilitates direct port-to-port communication between connected processors.
• On-chip arbitration logic manages bus access, providing BUSY output flags to ensure error-free data transfer.
• Automatic power-down feature controlled by chip enable signals allows the device to enter low standby power modes.

Memory IC Applications

• Interprocessor communication in multi-core or distributed processing systems
• Master/Slave dual-port RAM expansion for 16-bit or wider data bus architectures
• High-speed buffer memory in telecommunications equipment
• Real-time data logging in industrial control systems

Memory IC Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm RoHS compliance status as older batches may not meet current environmental standards. Check moisture sensitivity level handling requirements during assembly. Ensure pin compatibility with existing PCB footprints before procurement. Validate lead times as availability may be limited for discontinued variants.

Memory IC Selection Notes

Select this component when simultaneous read/write access to shared memory is required without external arbitration logic. Choose the LA suffix variant if battery backup operation with 2V data retention is necessary. Consider the TQFP package for surface-mount applications requiring compact form factors. Verify that the 35ns access time meets system timing constraints. Ensure the 5V supply voltage aligns with the target platform's power architecture.

Memory IC Part Context

This part belongs to the Renesas 71321 series of dual-port SRAMs, which are designed for high-performance embedded applications. The series offers various access speeds and package options to suit different system requirements. These devices are commonly used in networking, automotive, and industrial sectors where reliable, fast, and concurrent memory access is critical for system stability and performance.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers include 71321LA20PFG8. Verify electrical specifications and pinout compatibility before substitution. Ensure the replacement maintains the same dual-port functionality and interrupt logic features. Check for any differences in package dimensions or thermal characteristics.