7132SA55L48B

Overview

The 7132SA55L48B is a dual-port static random-access memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It provides a storage capacity of 16 kilobits, organized as 2K words by 8 bits. The device features asynchronous parallel interfaces for both ports, allowing independent access. Key electrical specifications include a maximum access time of 55 nanoseconds and a supply voltage range of 4.5V to 5.5V. It operates within an industrial temperature range of -55°C to +125°C. The component is housed in a 48-lead Leadless Ceramic Chip Carrier (LCC) package with dimensions of 14.22mm x 14.22mm.

Feature Summary

• Dual-port architecture enabling simultaneous independent access from two distinct systems or processors.
• Asynchronous operation supporting flexible timing requirements without external clock synchronization.
• Industrial-grade thermal stability designed for reliable performance in extreme environmental conditions.

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded control systems
• Data logging modules requiring rapid write cycles

Procurement Notes

Verify the specific suffix L48B to confirm the 48-LCC package and industrial temperature rating (-55°C to +125°C). Confirm RoHS compliance status as older variants may not meet current directives. Check manufacturer discontinuation notices, as this series may be subject to end-of-life restrictions. Ensure compatibility with existing PCB footprints for 48-lead LCC components during procurement planning.

Selection Notes

Select this component when dual-port functionality is required for concurrent data access. The 55ns speed suits moderate-to-high speed applications. The industrial temperature range makes it suitable for harsh environments where commercial grade parts would fail. Compare against single-port alternatives if only one interface is needed, or faster speeds if latency is critical.

Part Context

This part belongs to the 7132SA family of dual-port SRAMs. It shares core architectural similarities with other members like the 7132SA55P (DIP package) and 7132SA55J (PLCC package), differing primarily in physical packaging and potentially thermal ratings. The 'L48B' designation specifically identifies the ceramic LCC form factor optimized for durability.

Replacement Considerations

Direct pin-compatible substitutes include the 7132SA55J (PLCC-52) and 7132SA55P (PDIP-48) if package adaptation is feasible. Verify that replacement packages support the required industrial temperature range. Cross-reference datasheets to ensure identical electrical characteristics and timing parameters before substitution.