70261S25PF8

Memory IC Overview

The Renesas Electronics Corporation 70261S25PF8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a total storage capacity of 256 kbit. The memory array is organized as 16K words by 16 bits. It features a parallel interface and supports a single 5V power supply operating within a range of 4.5V to 5.5V. The component has an access time of 25 ns and is designed for surface-mount installation in a 100-pin TQFP package. It operates within an industrial temperature range from -40°C to +85°C.

Memory IC Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from either port.
• On-chip hardware support for semaphore signaling enables automatic port arbitration between the two ports.
• Separate upper-byte and lower-byte control signals provide compatibility with multiplexed bus systems.
• Automatic power-down feature controlled by chip enable allows on-chip circuitry to enter low standby power mode.

Memory IC Applications

• Stand-alone dual-port RAM applications
• Master/Slave dual-port RAM configurations for 32-bit or wider word systems
• High-speed data buffering in embedded systems

Memory IC Procurement Notes

Verify current availability status as this component may be subject to discontinuation notices. Confirm that the specific suffix PF8 corresponds to the required 100-pin TQFP packaging and reel format. Ensure the selected variant meets the necessary industrial temperature range requirements for your application environment before finalizing procurement.

Memory IC Selection Notes

Select this component when simultaneous independent read/write access to shared memory is required without external arbitration logic. It is suitable for designs needing a 16-bit wide data path with 25 ns latency. Consider the 100-pin TQFP footprint constraints and verify that the system voltage aligns with the specified 5V TTL-compatible supply requirements.

Memory IC Part Context

This part belongs to the 70261 series of dual-port SRAMs manufactured by Renesas Electronics. The series is characterized by its ability to function as either standalone memory or in master/slave pairs for expanded data buses. The 'S' designation typically indicates the commercial-to-industrial temperature grade variants within this family.

Memory IC Replacement Considerations

Official upgrade alternatives include the 70261L15PFG8. Verify pinout compatibility and electrical specifications against the original design requirements before substituting.