70261L55PFI

Memory IC Overview

The Renesas Electronics Corporation 70261L55PFI is a high-speed, dual-port static random-access memory (SRAM) integrated circuit. It provides a total storage capacity of 256 kilobits, organized as 16K words by 16 bits. The device features asynchronous parallel interfaces for both ports, allowing independent access. Key electrical specifications include a maximum access time of 55 nanoseconds and a write cycle time of 55 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 100-pin Thin Quad Flat Package (TQFP).

Memory IC Feature Summary

• Dual-port architecture enabling simultaneous independent access from two distinct systems.
• Asynchronous operation eliminating the need for external clock synchronization.
• High-speed data transfer capabilities suitable for demanding processing applications.

Memory IC Applications

• Stand-alone dual-port memory modules in embedded systems.
• Data buffering between microprocessors and peripheral devices.
• Cache memory implementations in high-performance computing architectures.

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to obsolete status. Confirm RoHS compliance requirements against specific project standards. Validate package integrity upon receipt. Ensure proper handling procedures are followed during assembly to prevent electrostatic discharge damage. Review official datasheets for updated pin configurations and electrical limits before integration.

Memory IC Selection Notes

Select this component when independent concurrent read/write operations are required without bus contention. Consider the 55ns speed grade for moderate latency requirements. Evaluate the 100-pin TQFP footprint against available board space. Compare power consumption characteristics with alternative SRAM families if energy efficiency is critical. Verify compatibility with existing system voltage levels.

Memory IC Part Context

This part belongs to the IDT70261 family of high-speed dual-port SRAMs manufactured by Renesas Electronics. The series is designed for applications requiring fast, non-blocking memory access. The 70261L55PFI variant specifically denotes the 55ns speed bin and TQFP packaging. This family serves as a bridge between standard single-port memories and complex FIFO structures.

Memory IC Replacement Considerations

Official substitute part numbers include the 70261L20PFGI. Verify pinout compatibility and electrical parameter alignment before substitution. Check for any functional differences in control signals or power management features.