7009L20PFG8

Memory IC Overview

The 7009L20PFG8 is a high-speed 128K x 8 Dual-Port Static RAM designed for standalone or master/slave configurations. It features true dual-ported memory cells allowing simultaneous reads of the same location, on-chip port arbitration logic, and hardware semaphore signaling. The device operates asynchronously from either port with TTL-compatible single 5V power supply (4.5V to 5.5V) and supports battery backup with 2V data retention. It is available in a 100-pin TQFP package with an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations by two ports.
• Integrated on-chip port arbitration logic and full hardware support for semaphore signaling between ports.
• Automatic power-down feature controlled by chip enable to achieve very low standby power mode.
• TTL-compatible operation with single 5V power supply and support for battery backup data retention.

Memory IC Applications

• Stand-alone 1M-bit Dual-Port RAM systems
• Master/Slave Dual-Port RAM combinations for 16-bit or wider word systems
• High-speed data buffering in asynchronous communication interfaces

Memory IC Procurement Notes

Verify component authenticity through authorized Renesas distributors due to obsolete status. Confirm package integrity and lead condition upon receipt. Check datasheet revisions for any pinout or electrical parameter updates. Ensure storage conditions comply with moisture sensitivity level requirements before reflow soldering.

Memory IC Selection Notes

Select this component when simultaneous read access to shared memory is required without external arbitration logic. Suitable for applications needing hardware-based semaphore signaling and low standby power via automatic power-down. Verify compatibility with 5V logic levels and industrial temperature range requirements.

Memory IC Part Context

The 7009 series represents Renesas' high-performance dual-port SRAM family, offering flexible memory sharing capabilities for complex system architectures. This specific variant provides 128K x 8 organization in a 100-pin TQFP package, balancing density with speed for embedded control and telecommunications applications requiring concurrent processor access.