7005S35JG

Overview

The Renesas Electronics Corporation 7005S35JG is a high-speed, asynchronous dual-port static random access memory (SRAM) with a storage capacity of 64 kbit organized as 8k x 8. It features a parallel interface and supports simultaneous independent reads from either port. The device operates on a single 5V power supply within a voltage range of 4.5 V to 5.5 V. It offers a maximum access time of 35 ns and functions within an industrial temperature range of 0°C to +70°C. The component is housed in a surface-mount PLCC-68 package.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent read operations from both ports without conflict.
• Integrated hardware support for semaphore signaling and port arbitration logic to manage data integrity between master and slave configurations.
• Asynchronous operation allowing flexible timing control from either port, compatible with TTL-level inputs.
• Automatic power-down feature controlled by chip enable signals to reduce standby power consumption.

Applications

• Stand-alone 64K-bit dual-port RAM systems requiring high-speed data buffering.
• Master/slave dual-port RAM configurations for 16-bit or wider word systems.
• Industrial control applications requiring reliable data exchange between microprocessors.
• Battery-backed systems utilizing the device's low standby power modes.

Procurement Notes

Verify the exact suffix designation against official Renesas documentation, as standard listings often reference the 7005S35J variant. Confirm RoHS compliance status and moisture sensitivity levels prior to integration. Check current lifecycle status, as older SRAM families may face discontinuation. Ensure the PLCC-68 package footprint matches your PCB design constraints. Validate operating temperature ranges against your specific environmental requirements.

Selection Notes

Select this component when true dual-port independence is required for concurrent data access. The 35 ns access speed suits moderate-to-high frequency asynchronous interfaces. The 5V single-supply operation simplifies power design compared to multi-voltage alternatives. Consider the PLCC-68 package if surface-mount leadless ceramic packaging is preferred over PGA or TQFP options. Evaluate the integrated semaphore logic if complex handshaking protocols are needed between system ports.

Part Context

The 7005 series represents a family of high-speed dual-port SRAMs designed for versatile memory expansion. Variants differ primarily in access speeds, package types, and temperature grades. The 7005S35JG belongs to the commercial temperature grade subset, offering a balance of performance and cost. This series supports various bus widths and organization formats, making it adaptable for diverse embedded memory architectures.

Replacement Considerations

Cross-reference with IDT7005S35JG, which shares identical functional specifications and pinout compatibility. Verify that any substitute maintains the same PLCC-68 package dimensions and electrical characteristics. Ensure the replacement part supports the required 35 ns access time and 5V operating voltage. Confirm that the alternative manufacturer provides equivalent semaphore and interrupt flag functionality.