70261L15PF8

Memory IC Overview

The Renesas Electronics Corporation 70261L15PF8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) integrated circuit. It features a storage capacity of 256 kilobits organized as 16K words by 16 bits. The device supports independent access to the same memory location from two separate ports simultaneously. Key electrical parameters include a maximum access time of 15 nanoseconds and a write cycle time of 15 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The component is housed in a 100-pin Thin Quad Flat Package (TQFP) with dimensions of 14x14 mm. It is designed for surface-mount installation and functions reliably across an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• True dual-ported architecture enabling simultaneous independent read/write operations from both ports without conflict.
• On-chip hardware support for semaphore signaling and port arbitration logic to manage bus contention.
• Automatic low-power standby mode controlled by chip enable signals to reduce power consumption during idle states.
• Separate upper-byte and lower-byte control lines to facilitate multiplexed bus compatibility.

Memory IC Applications

• Stand-alone dual-port memory modules in embedded systems requiring concurrent data access.
• Master/Slave dual-port RAM configurations for expanding data bus width to 32-bit or more in complex architectures.
• Industrial control applications operating within the specified wide temperature range.
• High-speed data buffering where simultaneous port access reduces latency.

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to potential availability of refurbished units. Confirm RoHS compliance status, as suffix variations may indicate lead-free or non-compliant versions. Check moisture sensitivity level handling requirements prior to soldering. Ensure the specific package variant matches design constraints. Review official notices for end-of-life status or recommended replacements before finalizing procurement plans.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data transfer is required between two processors or buses. The 15ns speed suits high-throughput applications needing fast response times. Consider the 100-pin TQFP footprint for PCB layout compatibility. Evaluate power management needs against the automatic standby feature. Compare alternative speeds or capacities if system requirements exceed the 256Kb density limit.

Memory IC Part Context

This part belongs to the 70261 series of dual-port SRAMs manufactured by Renesas Electronics. The series is engineered for high-performance memory applications requiring true dual-ported access. Variants within the family differ primarily in access speed, packaging, and temperature ratings. The 70261L15PF8 specifically denotes the 15ns speed grade in a reel-packaged TQFP format suitable for automated assembly processes.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include 70261L15PFGI and 70261L20PFGI. These alternatives offer similar dual-port functionality but may vary in package type or access speed. Verify pinout compatibility and electrical specifications before substitution.