AT25SF2561C-SUB-T

Memory IC Overview

The AT25SF2561C-SUB-T is a 256 Mbit NOR flash memory device manufactured by Renesas Electronics. It operates within a voltage range of 2.7V to 3.6V and supports an operating temperature range from -40°C to +85°C. The component utilizes a Serial Peripheral Interface (SPI) with support for single, dual, quad, and QPI modes. It is housed in a SOIC-W package with a width of 208 mils and is supplied in tape and reel format.

Memory IC Feature Summary

• Supports standard block architecture compatible with universal pinout and command sets
• Enables code execution directly from flash via XiP mode
• Includes security features for device serialization and key storage

Memory IC Applications

• Industrial systems requiring program memory shadowing
• Consumer electronics applications
• Connected devices and IoT solutions

Memory IC Procurement Notes

Verify the specific suffix 'SUB-T' corresponds to the SOIC-W 208mil tape and reel packaging configuration. Confirm that the required interface modes align with the AT25SF2561C specifications rather than the higher-speed AT25QF2561C variant if maximum speed is not critical. Ensure environmental ratings meet the -40°C to +85°C requirement for the target deployment.

Memory IC Selection Notes

Select this part when a standard SPI NOR flash with 256 Mbit density is required for code storage or data logging. It is suitable for designs where direct execution from flash is needed without external RAM shadowing. Consider the AT25QF2561C if higher clock speeds up to 133MHz are necessary, as the SF variant has different performance characteristics.

Memory IC Part Context

This component belongs to the AT25xF series of serial NOR flash memories designed for 3V systems. It provides a balance of capacity and interface flexibility for embedded applications. The device is positioned as a solution for storing firmware and data in compact electronic systems requiring reliable non-volatile storage.

Memory IC Replacement Considerations

The AT25QF2561C is a related variant offering higher speed capabilities while maintaining functional compatibility. Verify if the increased performance of the QF series is required or if the SF series meets the timing constraints of the design.