7007L55J

Memory IC Overview

The Renesas Electronics Corporation 7007L55J is a static random access memory (SRAM) device featuring a 256 kbit storage capacity organized as 32k x 8. It operates with a parallel interface and supports an access time of 55 ns. The component functions within a supply voltage range of 4.5 V to 5.5 V. It is housed in a 68-PLCC package, measuring 24.21x24.21 mm, and is designed for surface mount installation. The device supports an operating temperature range from 0°C to +70°C.

Memory IC Feature Summary

• Dual-port asynchronous architecture enabling independent simultaneous access by two masters
• Hardware semaphore support for efficient bus arbitration between port A and port B
• Integrated busy and interrupt signals to manage data transfer conflicts
• Parallel interface compatibility for straightforward system integration

Memory IC Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• FIFO buffer applications requiring dual-master access
• Industrial control systems needing reliable volatile storage

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to potential obsolescence status. Confirm RoHS compliance requirements against specific project standards, as older variants may not meet current regulations. Validate package integrity upon receipt, ensuring the PLCC-68 leads are undamaged. Check datasheet revisions for any pinout or electrical characteristic updates before finalizing design integration.

Memory IC Selection Notes

Select this component when dual-port functionality is required for concurrent master access without external arbitration logic. The 55 ns access time suits moderate-speed synchronous and asynchronous designs. Ensure the 5V supply voltage aligns with the target system's power rails. Consider the PLCC-68 footprint constraints during PCB layout planning compared to smaller surface-mount alternatives.

Memory IC Part Context

This part belongs to the Renesas 7007L series of dual-port SRAMs, previously manufactured under IDT branding. The series provides versatile memory solutions for applications requiring independent read/write operations on separate ports. The 7007L55J specifically offers a balance of density and speed within the 256 kbit class, utilizing standard parallel interfaces common in legacy and industrial electronic designs.

Memory IC Replacement Considerations

Direct substitutes include the IDT7007L55J variant, which shares identical specifications and pinouts. Other compatible options within the same family may include different access speeds or packaging styles, such as the 7007L55PF in TQFP format, provided the mechanical footprint allows for adaptation.