70261L20PFG

Memory IC Overview

The Renesas Electronics Corporation 70261L20PFG is a high-speed 16K x 16 Dual-Port Static RAM. It features true dual-ported memory cells allowing simultaneous access to the same location. The device supports separate upper-byte and lower-byte control for multiplexed bus compatibility. It includes on-chip port arbitration logic and hardware support for semaphore signaling between ports. The component operates asynchronously from either port with TTL-compatible single 5V power supply. An automatic power-down feature controlled by CE enables low standby power mode.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations
• Integrated port arbitration logic with full hardware support for semaphore signaling between ports
• Separate byte control lines providing compatibility with multiplexed bus systems
• Automatic power-down functionality managed by chip enable signals for reduced standby consumption

Memory IC Applications

• Stand-alone dual-port memory implementations
• Master/Slave dual-port configurations in 32-bit or wider word systems
• High-speed data buffering between asynchronous processors
• Real-time signal processing applications requiring concurrent read/write operations

Memory IC Procurement Notes

Verify the exact suffix of the ordered part number against the datasheet, as variations such as PFGI or PFGI8 indicate specific package or environmental ratings. Confirm moisture sensitivity level and lead-free status requirements for your assembly process. Check current production status as this series may have discontinued variants. Ensure voltage supply specifications match the 4.5V to 5.5V range defined for the L-series devices.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration circuitry. The 16K x 16 organization suits applications needing moderate density with high throughput. Consider the TQFP-100 package constraints for PCB layout. Verify that the asynchronous interface timing meets system clock requirements. Evaluate power consumption profiles if battery operation or thermal management is critical.

Memory IC Part Context

This device belongs to the 70261 family of dual-port SRAMs manufactured by Renesas Electronics. The family offers various access times and packaging options to suit different performance needs. These memories are designed for embedded systems and industrial applications requiring reliable data sharing between multiple masters. The technology leverages advanced CMOS processes for speed and low power efficiency.

Memory IC Replacement Considerations

Direct replacements include other members of the 70261 series with compatible pinouts and electrical characteristics. Verify that substitute parts maintain the same 16K x 16 organization and dual-port functionality. Check for differences in access time or power consumption that might impact system timing or thermal design.