70261S55PF8

Memory IC Overview

The 70261S55PF8 is a dual-port asynchronous static random-access memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It provides a storage capacity of 256 kilobits, organized as 16K words by 16 bits. The device features parallel interface access with a maximum access time of 55 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The component is housed in a 100-pin Thin Quad Flat Package (TQFP) with dimensions of 14x14 mm and supports surface-mount installation.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location from two separate ports.
• Integrated hardware semaphore signaling and port arbitration logic for automatic conflict resolution between accessing ports.
• Automatic low-power standby mode controlled by chip enable signals to reduce active power consumption.
• Separate upper-byte and lower-byte control lines to support multiplexed bus compatibility.

Memory IC Applications

• Stand-alone dual-port RAM systems requiring high-speed data exchange.
• Master/Slave dual-port configurations for 32-bit or wider word systems.
• Industrial control applications operating within the commercial temperature range.

Memory IC Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and moisture sensitivity level handling procedures prior to assembly. Check for specific RoHS compliance status as older variants may differ from current environmental standards. Ensure pinout compatibility with existing PCB layouts before finalizing procurement decisions.

Memory IC Selection Notes

Select this component when a 55 ns access speed is sufficient for the target application's timing requirements. Choose this part for designs requiring true dual-port functionality without external arbitration logic. Consider the 100-pin TQFP package constraints for board space limitations. Verify that the 5V logic levels match the system's I/O voltage specifications.

Memory IC Part Context

This component belongs to the 70261 series of high-speed dual-port SRAMs. The series offers various access speeds and packaging options to suit different performance needs. The 'S' suffix typically denotes the commercial temperature grade, while 'PFI8' indicates the specific package type and tape-and-reel packaging configuration.

Memory IC Replacement Considerations

• 70261L55PFG