70261S35PF

Memory IC Overview

The 70261S35PF is a dual-port static random-access memory integrated circuit manufactured by Renesas Electronics Corporation. It features a storage capacity of 256 kilobits organized as 16K words by 16 bits. The device utilizes parallel asynchronous interface technology with an access time and write cycle time of 35 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 100-pin TQFP package measuring 14x14 mm. The component is rated for commercial operating temperatures between 0°C and 70°C.

Memory IC Feature Summary

• Supports simultaneous independent access to the same memory location from both ports
• Includes on-chip hardware semaphore signaling for port arbitration
• Features automatic power-down mode controlled by chip enable signals

Memory IC Applications

• Stand-alone dual-port RAM systems
• Master/Slave dual-port configurations for 32-bit or wider data bus expansion
• High-speed data buffering applications requiring concurrent read/write operations

Memory IC Procurement Notes

This component has reached end-of-life status and is no longer manufactured. Verification of availability requires checking authorized distributors for remaining stock or approved upgrade alternatives. Confirm that replacement parts maintain compatible pinouts, electrical specifications, and package dimensions to ensure seamless integration into existing designs without modification.

Memory IC Selection Notes

Engineers should evaluate the 70261L series as potential upgrades due to improved performance metrics. Verify that the selected replacement supports the required temperature range and packaging format. Ensure that the new part maintains compatibility with TTL-compatible single 5V power supplies and retains necessary control features such as busy flags and interrupt capabilities for system stability.

Memory IC Part Context

The 70261S35PF belongs to the 70261 family of high-speed dual-port SRAMs designed for versatile memory applications. This family allows flexible configuration as standalone units or master/slave combinations. The specific S35 variant denotes the 35 nanosecond speed grade within the product line, offering a balance of performance and power consumption for general-purpose computing tasks.

Memory IC Replacement Considerations

The 70261L15PFG is listed as an upgrade alternative. Verify functional equivalence regarding semaphore support and power-down modes before implementation.