Adesto Technologies Corporation, Inc. Memory AT45DQ321-MWHF2B-T

The AT45DQ321-MWHF2B-T is a 32-Mbit serial Flash memory device from Quarktwin Technology Ltd., designed for applications requiring high-speed data storage. It operates on a single supply voltage ranging from 2.3V to 3.6V and supports SPI communication with maximum clock frequencies of 104MHz for standard SPI and 70MHz for Dual-I/O and Quad-I/O modes. The memory is organized into 8,192 pages, each capable of holding 512 or 528 bytes of data, and features two independent SRAM buffers that facilitate simultaneous data reception and memory reprogramming. This device offers flexible programming and erasing options, including page, block, sector, and chip erase capabilities, along with program and erase suspend/resume functions. It is equipped with advanced data protection features, such as individual sector protection and a one-time programmable security register. The AT45DQ321-MWHF2B-T is rated for a minimum endurance of 100,000 program/erase cycles and provides data retention for up to 20 years. It is suitable for a wide range of commercial and industrial applications, operating within an industrial temperature range of -40¬8C to 85¬8C, and is available in RoHS-compliant packaging options.