25 MHz CPUXV2 core — what it handles
That clock rate, combined with a 16-bit RISC architecture and a hardware multiplier, is enough for real-time polyphase energy metering calculations, LCD update loops, and communication protocol handling without a separate co-processor.
7×24-bit sigma-delta ADC — the reason you picked this part
The standout peripheral is the seven independent 24-bit sigma-delta analog-to-digital converters. This is a purpose-built front end for three-phase energy metering, power-quality monitoring, or multi-channel sensor acquisition. Each converter can be paired with a current transformer or shunt and a voltage divider to simultaneously sample all phases and the neutral. The integrated LCD driver (up to 160 segments) means the same chip can drive a local display without an external controller.
The 90 general-purpose I/O pins in the 128-LQFP package give ample room for external memory, serial interfaces, and control signals.
Texas Instruments lists the MSP430F67781IPEUR as obsolete. That means no factory orders, no last-time-buy windows, and no guaranteed future availability from the manufacturer. However, the part remains available through independent distribution and surplus inventory channels.