70261L20PFI

Memory IC Overview

The Renesas Electronics Corporation 70261L20PFI is a high-speed 256 Kbit (16K x 16) dual-port static random-access memory. It features a parallel asynchronous interface with a maximum access time of 20 ns. The device operates on a single 5V power supply within a voltage range of 4.5 V to 5.5 V, drawing a maximum current of 315 mA. It is housed in a 100-pin TQFP surface-mount package and supports an industrial operating temperature range from -40°C to +85°C.

Memory IC Feature Summary

• True dual-ported memory cells enable simultaneous independent access to the same memory location by both ports.
• On-chip hardware support for semaphore signaling facilitates port arbitration and synchronization between processors.
• Separate upper-byte and lower-byte control lines allow compatibility with multiplexed bus architectures.
• Automatic power-down feature controlled by chip select permits entry into a low standby power mode.

Memory IC Applications

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

Memory IC Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to obsolescence notices. Confirm that the specific suffix PFI matches the required 100-pin TQFP package and industrial temperature grade (-40°C to +85°C). Ensure design compatibility with the specified 5V logic levels and check for any relevant RoHS compliance documentation if environmental regulations apply to the target assembly.

Memory IC Selection Notes

Select this component when a 256 Kbit capacity with true simultaneous dual-port access is required. It is suitable for designs needing hardware-based synchronization via semaphores rather than software polling. Verify that the system requires a 5V supply and 20 ns access speed. Consider alternative packages like PLCC if pin count constraints differ, though this model is specific to the TQFP form factor.

Memory IC Part Context

This device belongs to the 70261 series of high-speed dual-port SRAMs manufactured by Renesas Electronics. It is designed for applications requiring fast, conflict-free data sharing between two independent masters. The part is functionally equivalent to legacy IDT models under the IDT70261 designation, maintaining the same electrical characteristics and pinout for direct replacement in existing designs.

Memory IC Replacement Considerations

The 70261L20PFGI is listed as a direct substitute offering identical specifications with updated packaging or compliance attributes.