71342LA25PFI

Overview

The Renesas Electronics Corporation 71342LA25PFI is a high-speed, 32Kb (4K x 8) dual-port static random-access memory (SRAM). It features fully asynchronous parallel operation with independent access from either port. The device operates on a single 5V TTL-compatible power supply and supports battery backup for data retention at 2V. It is housed in a 64-pin Thin Quad Flat Package (TQFP) and is rated for an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• True dual-ported memory cells enabling simultaneous access to the same memory location from both ports without contention.
• Integrated hardware semaphore logic block for automatic arbitration between ports, eliminating the need for external control.
• Automatic power-down feature controlled by chip enable signals to achieve very low standby power consumption.

Applications

• Systems requiring simultaneous independent access to shared data buffers.
• High-speed digital signal processing architectures.
• Telecommunications equipment requiring reliable data buffering.
• Industrial control systems needing robust memory arbitration.

Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm RoHS compliance status as older variants may not meet current environmental standards. Validate package integrity upon receipt. Ensure storage conditions adhere to moisture sensitivity level requirements. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when true dual-port functionality with hardware arbitration is required. Suitable for applications where wait states are intolerable. Compare against the 71342SA series if semaphore logic is unnecessary. Verify voltage compatibility with the 5V system. Consider the 64-pin TQFP footprint for PCB layout constraints.

Part Context

The 71342LA25PFI belongs to the Renesas 71342 family of dual-port SRAMs. This family provides high-speed memory solutions with integrated arbitration logic. The 'LA' suffix indicates industrial temperature range capability and battery backup support. The '25' denotes a 25ns access time. The 'PFI' specifies the 64-pin TQFP package type.

Replacement Considerations

Public confirmed substitute part numbers: 71342LA25PFGI.