7005L55PF8

Overview

The Renesas Electronics Corporation 7005L55PF8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It provides a storage capacity of 64 kilobits organized as 8K words by 8 bits. The component features parallel interface access with a maximum access time of 55 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device is housed in a 64-pin Thin Quad Flat Package (TQFP) with dimensions of 14x14 mm. It supports an industrial operating temperature range from 0°C to 70°C.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent reads and writes from two separate ports without conflict.
• Integrated hardware semaphore signaling logic for automatic port arbitration and synchronization between the two access ports.
• Automatic power-down functionality controlled by chip enable signals to minimize standby power consumption during idle periods.
• TTL-compatible input and output levels allowing direct interfacing with standard digital logic systems.

Applications

• High-speed data buffering in telecommunications equipment requiring low-latency packet handling.
• Real-time signal processing systems utilizing master/slave configurations for expanded data bus widths.
• Industrial control units requiring reliable volatile memory with hardware-based synchronization mechanisms.
• Automotive electronic modules needing robust asynchronous memory for sensor data logging and processing.

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 regulations. Check moisture sensitivity level handling requirements during storage and assembly. Validate package integrity upon receipt to ensure pin alignment matches the 64-TQFP specification.

Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration logic. Consider the 55ns access speed against system clock requirements. Ensure the 64-TQFP footprint fits the printed circuit board layout constraints. Verify that the 4.5V to 5.5V supply range aligns with the target system's power delivery network.

Part Context

This part belongs to the Renesas 7005 series of dual-port SRAMs, designed for applications demanding high throughput and concurrent port access. The series offers various access speeds and packaging options to suit different performance and form factor needs. The 7005L55PF8 specifically targets industrial and commercial environments with its extended temperature rating and surface-mount packaging.

Replacement Considerations

Direct substitutes include other 7005 series variants with compatible pinouts and electrical characteristics. Verify that any replacement maintains the 64-TQFP package and 55ns access time specifications. Ensure the alternative device supports the same semaphore and interrupt flag functionalities for seamless integration.