70261L55PFG

Memory IC Overview

The 70261L55PFG is a high-speed 16K x 16 Dual-Port Static RAM designed for standalone or master/slave configurations in 32-bit systems. It features true dual-ported memory cells allowing simultaneous access to the same location, separate upper-byte and lower-byte control for multiplexed bus compatibility, and on-chip port arbitration logic with semaphore signaling support. The device operates asynchronously from either port using a TTL-compatible single 5V power supply and includes automatic power-down features controlled by chip enable inputs.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations
• Integrated hardware support for semaphore signaling and port arbitration between two ports
• Separate byte control lines facilitating multiplexed bus compatibility and data width expansion
• Automatic low-power standby mode activation managed through chip enable signal control

Memory IC Applications

• Standalone dual-port memory modules in embedded systems
• Master/slave dual-port RAM combinations for 32-bit or wider word architectures
• High-speed asynchronous data buffering between processing units
• Hardware semaphore implementation for inter-port synchronization

Memory IC Procurement Notes

Verify RoHS compliance status and moisture sensitivity level before procurement. Confirm package type matches design requirements. Check current availability as this component may be subject to discontinuation notices. Ensure voltage specifications align with system power rails. Validate lead-free status if required by environmental regulations.

Memory IC Selection Notes

Select this component when simultaneous bidirectional access to shared memory is required without external arbitration circuitry. Suitable for applications needing hardware-based semaphore signaling between processors. Consider operating temperature range and package constraints during selection. Verify power consumption characteristics against system thermal limits.

Memory IC Part Context

Part of the Renesas 70261 series dual-port SRAM family offering various access times and packaging options. Designed for industrial and commercial applications requiring reliable high-speed memory sharing capabilities. Manufactured using advanced CMOS technology for improved performance and reduced power consumption compared to earlier generations.

Memory IC Replacement Considerations

Check for direct pin-to-pin replacements within the 70261 series such as different access time variants. Verify functional compatibility regarding semaphore and interrupt flag operations. Confirm package dimensions and lead pitch match existing PCB layouts.