70261S35PFI

Memory IC Overview

The Renesas Electronics Corporation 70261S35PFI is a high-speed, asynchronous dual-port static random-access memory (SRAM) integrated circuit. It features a storage capacity of 256 kilobits organized as 16K words by 16 bits. The device operates with a parallel interface and supports a voltage supply range of 4.5V to 5.5V. It provides an access time of 35 nanoseconds and is housed in a 100-pin Thin Quad Flat Package (TQFP) measuring 14x14 mm. The component is designed for surface mount installation.

Memory IC Feature Summary

• Supports simultaneous independent access to the same memory location from both ports via true dual-ported memory cells.
• Includes on-chip hardware support for semaphore signaling and port arbitration logic between ports.
• Features automatic power-down functionality controlled by chip enable signals to reduce standby power consumption.
• Provides busy and interrupt flags to facilitate efficient data transfer management.

Memory IC Applications

• Stand-alone dual-port RAM configurations
• Master/Slave dual-port RAM combinations for 32-bit or wider word systems
• High-performance embedded memory applications requiring concurrent access

Memory IC Procurement Notes

Verify component authenticity through authorized distributors due to discontinuation status. Confirm package markings match official datasheet specifications. Check for moisture sensitivity level compliance during handling. Ensure replacement parts meet identical electrical and mechanical requirements.

Memory IC Selection Notes

Select this component for designs requiring concurrent read/write operations without external arbitration logic. Consider the 100-pin TQFP footprint for PCB layout constraints. Evaluate thermal performance within the specified operating temperature range. Verify compatibility with TTL-compatible single 5V power supplies.

Memory IC Part Context

This part belongs to the Renesas 70261 series of dual-port SRAMs. It shares architectural similarities with other variants in the family but differs in speed grade and packaging suffixes. The 'S' designation typically indicates specific commercial or industrial temperature ranges depending on the full suffix code.

Memory IC Replacement Considerations

Official upgrade alternatives include the 70261L15PFG and 70261L20PFGI8. These replacements offer different access times and may require verification of pinout compatibility and environmental rating alignment before integration into existing designs.