This document describes a 16-bit MCU called ST10F276E, which features a MAC unit, 832 KB Flash memory, and 68 KB RAM. It has a highly performance 16-bit CPU with DSP functions, a fast instruction cycle time, and a multiply/accumulate unit. It also supports enhanced boolean bit manipulations and single-cycle context switching. The MCU includes various on-chip and external memories, an external bus, an interrupt controller, timers, an A/D converter, and serial channels.