7026S12JI

Memory IC Overview

The Renesas Electronics Corporation 7026S12JI is a high-speed 256Kbit (16K x 16) dual-port static random-access memory (SRAM). It features asynchronous parallel interface with a maximum access time of 12 ns. The device operates on a single 5V power supply within the 4.5V to 5.5V range. It is housed in an 84-pin PLCC package measuring 29.31x29.31 mm and supports commercial temperature operation from 0°C to 70°C.

Memory IC Feature Summary

• True dual-ported memory cells enable simultaneous independent access to the same memory location by two separate ports.
• On-chip hardware semaphore signaling and port arbitration logic facilitate direct communication between processors without external control.
• Separate upper-byte and lower-byte control lines allow compatibility with multiplexed bus architectures for flexible data width expansion.

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 multiprocessing environments

Memory IC Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to discontinuation notices. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for specific suffix variations that may indicate different packaging or environmental ratings. Ensure design-in documentation matches the exact 7026S12JI designation to avoid pinout mismatches.

Memory IC Selection Notes

Select this component when true simultaneous dual-port access is required for high-speed data sharing. The 12 ns speed suits applications needing rapid response times. Verify voltage compatibility with the 5V system requirement. Consider the 84-PLCC package constraints for PCB layout. Evaluate if the built-in semaphore logic meets inter-processor communication needs without additional firmware overhead.

Memory IC Part Context

This device belongs to the 7026 family of high-speed dual-port SRAMs designed for multiprocessing systems. It provides a robust solution for applications requiring concurrent read/write operations from multiple masters. The architecture supports easy integration into complex digital signal processing and telecommunications equipment where data integrity and speed are critical.

Memory IC Replacement Considerations

Public confirmed substitute: 70V657S12BCGI.