What this 16-bit MCU brings to a metering or industrial design
The MSP430F6735AIPN integrates five 10-bit and three 24-bit sigma-delta ADCs for energy measurement and sensor conditioning. The 80-LQFP package provides 52 I/O lines with LCD drive, DMA, and brown-out detection.
For procurement, this removes the obsolescence risk that often shadows older MCU families.
The three 24-bit sigma-delta ADCs are the reason to pick this part over a general-purpose MSP430. They directly digitise voltage and current transformer outputs in a polyphase energy meter, eliminating an external AFE chip. The five 10-bit channels handle auxiliary sensing (temperature, tamper detection). This integration shrinks the component count and board area for metrology designs, but the 24-bit path is the headline — if your application does not need that precision, a lower-cost MSP430 with fewer ADC channels may fit.
Connectivity and peripheral set
The 52 I/O lines in the 80-LQFP give enough headroom for a segmented LCD display, keypad, and isolated communication links.