70121L35JG

Memory IC Overview

The Renesas Electronics Corporation 70121L35JG is a high-speed, fully asynchronous dual-port static random-access memory (SRAM) device. It features an 18 kbit storage capacity organized as 2K x 9 bits per port. The component supports parallel interface communication with a maximum access time of 35 ns. It operates on a single 5V power supply within a voltage range of 4.5 V to 5.5 V and includes automatic power-down functionality controlled by chip enable signals. The device is housed in a 52-pin PLCC surface-mount package.

Memory IC Feature Summary

• Dual-port architecture enabling simultaneous independent access from two distinct ports
• On-chip hardware arbitration logic for seamless expansion to 18-bit or wider data bus systems
• Integrated semaphore signaling and interrupt flag capabilities for efficient port-to-port communication
• Automatic low-power standby mode activated via chip enable control

Memory IC Applications

• High-speed data buffering in telecommunications equipment
• Real-time processing systems requiring concurrent read/write operations
• Industrial automation controllers utilizing master-slave memory configurations
• Embedded systems needing fast asynchronous data exchange between processors

Memory IC Procurement Notes

Verify the specific suffix 'JG' against official manufacturer documentation to confirm lead-free status and moisture sensitivity level requirements. Confirm current availability status as this component may be subject to discontinuation notices. Ensure compatibility with existing PCB footprints and thermal management specifications before finalizing procurement plans.

Memory IC Selection Notes

Select this component when designing systems requiring true dual-port memory without external arbitration logic. It is suitable for applications needing 18-bit word width expansion using master-slave configurations. Consider the 52-PLCC package constraints and 35 ns access speed relative to system timing requirements. Evaluate power consumption needs given the automatic power-down feature availability.

Memory IC Part Context

This part belongs to the IDT/Renesas 70121/70125 series of dual-port SRAMs. The 70121 variant functions as a standalone unit or as a master device paired with the 70125 slave device. This series is designed for high-performance embedded applications where full-speed, error-free operation across expanded data buses is critical without additional discrete logic components.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers include IDT70121L35JG. Verify pinout and electrical parameter equivalence before substitution.