The Texas Instruments MSP430F6730IPZ is a 16-bit ultra-low-power MCU from the MSP430F6xx series, built around the MSP430 CPUXV2 core running at 25 MHz. The standout feature is the dual ADC block — three 24-bit sigma-delta converters for precision metrology or sensor front-ends, plus eight 10-bit channels for general-purpose analog sampling. Connectivity covers I²C, IrDA, LIN, SPI, and UART/USART. It operates from 1.8 V to 3.6 V over the industrial temperature range of -40°C to 85°C, housed in a 100-pin LQFP (14×14 mm) package.
25 MHz core — timing margin for metering loops
The 25 MHz clock rate on the CPUXV2 core runs the sigma-delta ADC conversion and LCD refresh in parallel without stalling the main loop.
Dual ADC — one chip does the analog front-end
The three 24-bit sigma-delta ADCs are the reason to pick this part over a general-purpose MSP430. They handle the precision analog path for energy measurement, weigh-scale, or pressure-sensor bridges, while the eight 10-bit channels take care of the auxiliary inputs — temperature, battery voltage, panel buttons. No external ADC needed for a basic metering or instrumentation board.