7009L20PFGI8

Memory IC Overview

The 7009L20PFGI8 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 supports asynchronous operation from either port, battery backup with 2V data retention, and automatic power-down modes. It operates on a single 5V supply (±10%) with TTL-compatible inputs and is available in a 100-pin TQFP package.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations
• Integrated hardware support for semaphore signaling and interrupt flags between ports
• Automatic low standby power mode controlled by chip enable signals
• TTL-compatible interface supporting single 5V power supply operation

Memory IC Applications

• Stand-alone 1M-bit Dual-Port RAM systems
• Master/Slave Dual-Port RAM combinations for 16-bit or wider word architectures
• Battery-backed memory applications requiring data retention during power loss

Memory IC Procurement Notes

Verify component authenticity through authorized channels as this part number is listed as obsolete. Confirm specific ordering suffixes against official Renesas documentation to ensure correct package type and temperature grade compatibility. Cross-reference datasheet revisions to validate pinout and electrical specifications before integration into new designs.

Memory IC Selection Notes

Select this component when simultaneous independent access to shared memory is required without external arbitration logic. Suitable for systems needing hardware semaphore support and low standby power consumption. Verify that the 100-pin TQFP package fits the target PCB layout constraints and that the 5V logic levels match the system interface requirements.

Memory IC Part Context

This device belongs to the 7009 series of dual-port SRAMs manufactured by Renesas Electronics. It provides high-speed asynchronous memory access with integrated control features. The series is designed to simplify system design by eliminating the need for discrete logic components typically required for multi-port memory management and synchronization.

Memory IC Replacement Considerations

Consult official Renesas obsolescence notices for recommended alternative part numbers. Ensure any substitute maintains compatible pinout, voltage levels, and timing characteristics. Verify availability of equivalent dual-port functionality and package options.