70T659S10BCI8

Memory IC Overview

The 70T659S10BCI8 is a dual-port static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It features a storage capacity of 4.5 Mbit organized as 128K words by 36 bits. The device operates with a maximum access time of 10 ns and supports parallel interface communication. It requires a single power supply voltage ranging from 2.4 V to 2.6 V. The component is housed in a 256-ball CABGA package measuring 17 mm by 17 mm. It is designed for asynchronous operation and includes standard power-down features controlled by chip enables.

Memory IC Feature Summary

• Dual-port architecture enabling simultaneous independent access to the same memory location from two separate ports.
• Asynchronous operation mode allowing flexible timing control without reliance on a system clock signal.
• Integrated automatic power-down functionality managed via chip enable inputs to reduce standby power consumption.
• Support for depth expansion through dual chip enables, facilitating system design scalability without external logic.

Memory IC Applications

• High-speed data buffering in telecommunications equipment requiring low-latency memory access.
• Network switching applications utilizing parallel interfaces for packet processing and routing.
• Industrial control systems operating within specified temperature ranges and voltage constraints.
• Embedded computing platforms requiring non-volatile-like speed with volatile storage characteristics.

Memory IC Procurement Notes

Verify component authenticity due to discontinuation status. Confirm RoHS compliance requirements as the part may not meet current environmental standards. Check moisture sensitivity level handling procedures during assembly. Ensure supply chain sources provide valid traceability documentation. Validate package markings against official datasheet specifications to prevent counterfeit infiltration.

Memory IC Selection Notes

Evaluate compatibility with existing system voltage levels, specifically the 2.5 V core requirement. Assess pin count and package dimensions against available board space constraints. Consider thermal management needs given the surface mount technology and operational temperature range. Verify interface signaling standards match controller capabilities. Review end-of-life notifications to plan for long-term maintenance strategies.

Memory IC Part Context

This component belongs to the 70T659 series of dual-port SRAMs produced by IDT and later Renesas Electronics. The series targets high-performance memory applications requiring fast access times and concurrent port operations. The specific suffix indicates packaging and revision details consistent with the 256-ball CABGA form factor. Related parts in the family offer varying densities and access speeds while maintaining similar interface protocols.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer obsolescence notices for potential recommended replacements. Evaluate functional equivalents based on matching density, access time, and package type. Verify electrical parameter compatibility before integrating alternative components into existing designs.