70261L25PF8

Memory IC Overview

The 70261L25PF8 is a high-speed 16K x 16 dual-port static random-access memory (SRAM) manufactured by Renesas Electronics. It features true dual-ported memory cells allowing simultaneous access to the same location, with separate upper-byte and lower-byte control for multiplexed bus compatibility. The device supports full on-chip hardware semaphore signaling and port arbitration logic. It operates asynchronously from either port with TTL-compatible single 5V power supply. Key electrical parameters include a 25 ns access time, 3.0 V to 3.6 V operating voltage range, and maximum current of 140 mA. It is housed in a 100-pin TQFP package suitable for surface mount installation.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations
• On-chip hardware support for semaphore signaling and automatic port arbitration logic
• Separate byte control lines facilitating multiplexed bus compatibility and easy data bus expansion
• Automatic low-power standby mode controlled by chip enable inputs

Memory IC Applications

• Stand-alone dual-port RAM systems requiring concurrent read/write operations
• Master/Slave dual-port configurations for 32-bit or wider word systems
• High-speed data buffering in asynchronous communication interfaces
• Real-time signal processing applications requiring low-latency memory access

Memory IC Procurement Notes

Verify the specific suffix PF8 corresponds to the reel packaging format when ordering. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the design accommodates the 100-pin TQFP footprint and thermal characteristics. Check for any moisture sensitivity level restrictions during storage and handling procedures prior to assembly.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data transfer between two processors is required without external arbitration circuitry. The 25 ns speed grade balances performance with power consumption for general-purpose embedded applications. Consider the 5V TTL compatibility if interfacing with legacy logic families. Evaluate the 100-pin package size against available board space constraints.

Memory IC Part Context

This part belongs to the 70261 series of dual-port SRAMs, which are designed for high-performance memory sharing. The L variant typically denotes commercial temperature range operation, while the S variant covers industrial ranges. The 70261 family provides a scalable solution for multi-processor systems needing fast, conflict-free memory access through integrated hardware semaphores.

Memory IC Replacement Considerations

The 70261L15PFG8 is listed as an upgrade alternative within the same product line. Verify pinout compatibility and timing differences before substitution. Other variants in the 70261 family may offer different access speeds or temperature grades but maintain similar functional architectures.