AT25SL641-MHE-T

Memory IC Overview

The AT25SL641-MHE-T is a non-volatile NOR flash memory integrated circuit manufactured by Renesas Electronics Corporation. It provides a storage capacity of 64 Mbit, organized as 8M x 8 bits. The device utilizes an SPI interface supporting standard, Dual I/O, and Quad I/O modes with a maximum clock frequency of 104 MHz. It operates within a supply voltage range of 1.7V to 2V and functions across a temperature range of -40°C to 85°C. The component is housed in an 8-UDFN (5x6) package with exposed pads.

Memory IC Feature Summary

• Supports Single, Dual, and Quad I/O SPI communication protocols for flexible data transfer rates.
• Features a standard block architecture optimized for code and data storage applications.
• Includes three security register pages for unique device serialization and system-level Electronic Serial Number storage.

Memory IC Applications

• Code shadowing from Flash memory into embedded or external RAM for execution
• System-level Electronic Serial Number (ESN) storage
• Locked key storage and unique device serialization

Memory IC Procurement Notes

Verify the current manufacturing status before procurement, as availability may vary. Confirm that the 1.7V to 2V operating voltage aligns with the target system power rails. Ensure the 8-UDFN package dimensions are compatible with the printed circuit board layout. Check for any specific environmental certifications required for the intended deployment region.

Memory IC Selection Notes

Select this component when a low-voltage operation between 1.7V and 2V is required for NOR flash storage. It is suitable for designs needing Quad I/O support at 104 MHz without exceeding the 2V limit. Consider the 8-UDFN footprint constraints during mechanical design. Verify that the -40°C to 85°C industrial temperature range meets the operational environment requirements.

Memory IC Part Context

This part belongs to the AT25SL series of SPI NOR flash memories designed for 3V systems, although it supports lower voltages down to 1.7V. It shares architectural similarities with other members like the AT25QL128A but offers a smaller 64 Mbit density. The device is positioned for applications requiring reliable code storage and moderate performance in compact surface-mount packages.

Memory IC Replacement Considerations

The AT25SL641-MHE-T is currently listed as active. No direct public substitute part numbers are confirmed in the provided documentation. Verify compatibility with existing firmware command sets if considering alternative vendors offering similar 64 Mbit SPI NOR devices.