Adesto Technologies Corporation, Inc. Integrated Circuits (ICs) - Memory - Memory AT25SF641B-MHB-T

The AT25SF641B-MHB-T is a 64-Mbit SPI serial flash memory device from Quarktwin Technology Ltd. It operates on a single supply voltage ranging from 2.7 V to 3.6 V and supports various SPI modes, including dual and quad I/O operations, allowing for flexible data transfer rates. The maximum operating frequency is 133 MHz, making it suitable for high-speed applications. This memory device features multiple erase sizes, including uniform 4-kbyte, 32-kbyte, and 64-kbyte block erase options, with typical erase durations of 65 ms, 150 ms, and 240 ms, respectively. A full chip erase takes approximately 30 seconds. It also supports continuous read mode optimized for execute-in-place (XiP) applications. The AT25SF641B-MHB-T includes security features such as hardware and software write protection, three protected programmable security register pages, and a 64-bit factory programmable UID register. It has an endurance of 100,000 program and erase cycles and offers data retention of up to 20 years. The device operates within an industrial temperature range of -40 ¬8C to 85 ¬8C and is available in an 8-pad ultra-thin dual flat no-lead (UDFN) package.