70261S12PFI

Memory IC Overview

The Renesas Electronics Corporation 70261S12PFI is a high-speed, 256K-bit (16K x 16) dual-port static random-access memory (SRAM). It features asynchronous parallel interface operation with a maximum access time of 12 nanoseconds. The device operates on a single 5V power supply within the industrial temperature range of -40°C to +85°C. It is housed in a 100-pin Thin Quad Flat Package (TQFP) suitable for surface-mount technology applications.

Memory IC Feature Summary

• True dual-ported architecture enabling simultaneous independent access to shared memory locations from two separate ports.
• Integrated hardware support for semaphore signaling and port arbitration logic to manage concurrent data transfers.
• Automatic low-power standby mode controlled by chip enable signals to reduce active power consumption.
• TTL-compatible inputs and outputs designed for direct interfacing with standard digital logic systems.

Memory IC Applications

• Stand-alone dual-port memory modules for embedded systems
• Master/Slave dual-port configurations in 32-bit or wider word architectures
• High-speed data buffering in telecommunications equipment
• Real-time signal processing units requiring concurrent read/write operations

Memory IC Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm RoHS compliance status as specific suffixes may vary. Check for moisture sensitivity level requirements during storage and handling. Ensure lead-free soldering profiles match datasheet specifications for TQFP packages. Validate end-of-life status before finalizing long-term production designs.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration overhead. Consider the 12ns speed grade for high-throughput applications exceeding slower variants. Evaluate the 100-pin TQFP footprint against available PCB real estate constraints. Compare power dissipation characteristics against system thermal management capabilities.

Memory IC Part Context

This part belongs to the 70261 family of dual-port SRAMs, which provides flexible memory solutions for complex digital designs. The series supports various access speeds and package options to accommodate different performance and form-factor requirements across industrial and commercial sectors.

Memory IC Replacement Considerations

Consult official substitution guides for compatible alternatives such as the 70261L series or other Renesas dual-port SRAMs with matching pinouts and electrical characteristics. Verify functional equivalence regarding semaphore logic and power-down modes before implementation.