70261L12PFI

Memory IC Overview

The 70261L12PFI is a high-speed 16K x 16 dual-port static random access memory (SRAM) manufactured by Renesas Electronics Corporation. It features a 256 kbit storage capacity with parallel asynchronous interface and 12 ns access time. The device operates on a single 5V power supply within a 4.5V to 5.5V range, drawing a maximum current of 240 mA. It supports industrial temperature ranges from -40°C to +85°C and is housed in a 100-pin TQFP package.

Memory IC Feature Summary

• True dual-ported memory cells enabling simultaneous independent access to the same memory location from both ports.
• On-chip hardware support for semaphore signaling and port arbitration logic to manage concurrent data transfers.
• Separate upper-byte and lower-byte control lines designed for multiplexed bus compatibility.
• Automatic power-down feature controlled by chip enable signals to achieve low standby power consumption.

Memory IC Applications

• Stand-alone dual-port RAM configurations
• Master/Slave dual-port RAM combinations for 32-bit or wider word systems
• High-speed data buffering in communication equipment

Memory IC Procurement Notes

Verify RoHS compliance status and moisture sensitivity level before procurement. Confirm package type and lead-free specifications against current datasheet revisions. Check for obsolescence notices or alternative package options such as tape-and-reel variants if tray packaging is unavailable.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration overhead. Ensure system voltage aligns with the 5V TTL-compatible requirement. Consider thermal management for industrial temperature applications and verify pinout compatibility with existing PCB layouts.

Memory IC Part Context

This part belongs to the 70261 series of high-speed dual-port SRAMs. It shares architectural similarities with other variants like the 70261L20 and 70261S55, differing primarily in access speed and specific operational characteristics within the same family.

Memory IC Replacement Considerations

Direct substitutes include 70261L20PFGI and 70261L15PFGI for similar performance profiles. Verify functional equivalence regarding semaphore logic and byte control signals before substitution.