The AT45DB321E-SHF2B-T from Dialog Semiconductor is a 32 megabit serial flash memory module. It features a 8-bit multiplexed address and data bus, a Serial Peripheral Interface (SPI) with clock rates up to 20 MHz, an Enhanced Enhanced-SPI (ESPI) interface, and a 131,072 number of erase sectors. Additionally, it offers a 1,843,520 number of Programmable Page-Erase Cycles and Data Retention of up to 70 years. It is offered in a lead-free, 6-pin USON package and the temperature range of operation is -40°C to +85°C. This module is suitable for use in electronic messaging and radio applications.