7005L70GB

Overview

The Renesas Electronics Corporation 7005L70GB is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a density of 64 Kbit. It features an 8K x 8 organization and operates on a single 5V power supply. The device provides independent access to the same memory location from two ports simultaneously, supporting true dual-ported functionality. It includes on-chip arbitration logic for interrupt flags and semaphore signaling. The component is housed in a 68-pin PGA package and offers a maximum access time of 70 ns.

Feature Summary

• True dual-ported memory cells enable simultaneous independent reads from both ports.
• On-chip hardware supports semaphore signaling and port arbitration logic.
• Automatic power-down feature controlled by chip enable reduces standby power consumption.

Applications

• Stand-alone 64K-bit dual-port RAM systems
• Master/Slave dual-port configurations for 16-bit or wider data bus expansion
• Battery-backed operation requiring 2V data retention

Procurement Notes

Verify RoHS compliance status as documentation indicates non-compliance. Confirm package type is 68-pin PGA. Check for discontinuation notices or end-of-life notifications prior to procurement. Ensure design-in compatibility with existing PCB footprints for PGA-68 packages.

Selection Notes

Select this component when simultaneous independent access to shared memory is required without external arbitration. Suitable for applications needing TTL-compatible 5V operation. Consider thermal management for PGA packaging. Verify temperature range requirements against industrial specifications if operating outside standard commercial limits.

Part Context

Part of the 7005 series of dual-port SRAMs. Shares architectural similarities with other variants like 7005S55GB and 7005L35G but differs in access speed and package options. Designed for high-performance memory buffering and data exchange between processors.

Replacement Considerations

IDT7005L70GB is listed as an alias part number. Verify pinout and electrical characteristics match exactly before substitution. Other 7005 series variants may require circuit modifications due to differing access times or package types.