71321SA55J

Memory IC Overview

The Renesas Electronics Corporation 71321SA55J is a static random access memory (SRAM) integrated circuit featuring dual-port asynchronous architecture. It provides a storage capacity of 16 kilobits organized as 2048 words by 8 bits. The device supports parallel interface communication with a maximum access time of 55 nanoseconds. It operates within a supply voltage range of 4.5 volts to 5.5 volts and draws a maximum supply current of 155 milliamperes. The component is housed in a 52-lead Plastic Leadless Chip Carrier (PLCC) package designed for surface mount technology. It functions reliably across an ambient temperature range from 0 degrees Celsius to +70 degrees Celsius.

Memory IC Feature Summary

• Dual-port asynchronous operation enabling independent simultaneous access to the same memory array
• CMOS technology providing high-speed data transfer capabilities
• Parallel interface supporting standard logic levels for system integration

Memory IC Applications

• High-speed data buffering in embedded systems
• Cache memory implementation in microprocessor architectures
• Data storage in industrial control equipment

Memory IC Procurement Notes

This component has reached end-of-life status and is no longer manufactured by Renesas Electronics Corporation. Verification of availability requires checking authorized distributors for remaining stock or obsolete inventory. Compliance with RoHS directives may vary depending on the specific production batch date, requiring confirmation against the datasheet revision history before procurement.

Memory IC Selection Notes

Designers should evaluate the 55-nanosecond access speed against system timing requirements. The 52-PLCC package necessitates appropriate printed circuit board layout considerations for surface mounting. Power consumption specifications must be analyzed within the thermal constraints of the target enclosure. Verify that the operating voltage range aligns with the system power supply rails.

Memory IC Part Context

The 71321SA55J belongs to the IDT 7132SA/LA family of dual-port SRAM devices originally developed by Integrated Device Technology, now part of Renesas Electronics. This series was engineered for applications requiring concurrent read/write operations from two distinct controllers without arbitration overhead. The product line represents a transition period in Renesas's memory portfolio following corporate acquisitions.

Memory IC Replacement Considerations

The 7132LA20JG is listed as an upgrade alternative by the manufacturer. Designers should verify pin compatibility and electrical parameter alignment before substitution.