AT45DB641E-MHN-Y
Overview
The AT45DB641E-MHN-Y is a 64 Mbit DataFlash NOR memory device designed for high-performance code and data storage. It features a unique architecture with two SRAM buffers that allow for simultaneous program and read operations, optimizing system throughput in embedded applications. The device operates over a wide voltage range of 1.7V to 3.6V and utilizes a standard SPI interface with clock speeds up to 85 MHz.
Why Choose This Part
The DataFlash architecture provides distinct advantages over standard serial flash by including two internal SRAM buffers that simplify the read-modify-write process at the page level. Its ultra-low power profile, featuring a 400 nA deep power-down mode and 25 uA standby current, makes it highly suitable for battery-operated devices. Additionally, the wide operating voltage of 1.7V to 3.6V allows it to interface directly with modern low-voltage microcontrollers without level shifting.
Applications
Key Specifications
Getting Started
To interface with this device, use an SPI master configured for Mode 0 or Mode 3. Engineers can leverage the Adesto/Renesas DataFlash drivers which support the specialized buffer-to-page programming commands. For hardware evaluation, verify pin compatibility with the 8-pad UDFN 5x6 footprint, ensuring the bypass capacitors are placed close to the VCC pin for high-frequency stability.
