7009L20PFG

Memory IC Overview

The 7009L20PFGI is a high-speed 128K x 8 dual-port static random-access memory (SRAM) manufactured by Renesas Electronics. It operates on a single 5V power supply with a maximum voltage of 5.5V and minimum of 4.5V, drawing up to 320mA. The device features a 20ns access time and utilizes a parallel asynchronous interface. It is housed in a 100-pin TQFP package suitable for surface mount technology. The component supports an industrial operating temperature range from -40°C to +85°C.

Memory IC Feature Summary

• True dual-ported memory cells enable simultaneous independent reads of the same memory location from both ports without conflict.
• On-chip hardware semaphore signaling and port arbitration logic provide automatic conflict resolution between accessing ports.
• Interrupt flag functionality allows one port to signal status changes or events to the other port efficiently.
• Automatic power-down mode controlled by chip select signals reduces standby power consumption significantly.

Memory IC Applications

• Stand-alone 1M-bit dual-port RAM systems
• Master/Slave dual-port configurations for 16-bit or wider data bus architectures
• Battery-backed systems requiring 2V data retention capabilities

Memory IC Procurement Notes

Verify end-of-life status and obsolescence notices before procurement planning. Confirm moisture sensitivity level handling requirements during storage and assembly. Ensure compatibility with existing PCB footprint and thermal management specifications. Validate that the 100-pin TQFP package aligns with automated placement equipment capabilities. Check for any specific environmental compliance documentation required for the target market.

Memory IC Selection Notes

Select this component when true simultaneous access to shared memory locations is required without external arbitration logic. Consider the 20ns speed and 5V operation for legacy or specific industrial control interfaces. Evaluate the need for interrupt flags and semaphore support for complex multi-processor communication protocols. Verify that the 100-pin package density fits within the system's physical constraints.

Memory IC Part Context

This part belongs to the 7009 series of dual-port SRAMs designed for high-performance data buffering and sharing. It serves as a bridge between different processing domains, allowing seamless data exchange. The series emphasizes hardware-based synchronization to simplify system design and reduce software overhead associated with memory management.

Memory IC Replacement Considerations

Check for direct pin-compatible upgrades within the 7009 family. Verify if newer generations offer improved power efficiency or extended temperature ranges while maintaining functional equivalence.