The MSP430i204x, MSP430i203x, MSP430i202x devices consist of a powerful 16-bit RISC CPU, a DCO-based clock system that generates system clocks, a power-management module (PMM) with built-in voltage reference and voltage monitor, two to four 24-bit sigma-delta analog-to-digital converters (ADCs), a temperature sensor, a 16-bit hardware multiplier, two 16-bit timers, one eUSCI-A module and one eUSCI-B module, a watchdog timer (WDT), and up to 16 I/O pins.