Precision measurement MCU with four 24-bit ΣΔ ADCs
It integrates 128KB of Flash program memory, 16K x 8 of RAM, and a 4-channel 24-bit sigma-delta ADC — the defining peripheral that makes this part a fit for energy metering, process instrumentation, and industrial sensor front-ends. The 100-LQFP package provides 62 I/O lines, and the supply range spans 1.8V to 3.6V.
Sigma-delta ADC — the reason you pick this part over a general-purpose MCU
The four 24-bit sigma-delta converters are the headline feature. They allow simultaneous sampling of multiple voltage and current channels in a polyphase energy meter, eliminating the need for an external ADC IC. The 24-bit resolution provides the dynamic range for class 0.2 metering accuracy without a separate analog front-end. The 8-channel 10-bit auxiliary ADC handles secondary measurements like temperature or tamper detection.
Industrial temperature range and connectivity
The integrated LCD driver (up to 4x multiplexed) offloads segment-display refresh from the core.
Lifecycle status — no LTB concern for new designs
Texas Instruments lists the MSP430F67451AIPZ as Active. The base product number MSP430F67451 covers the full family, so a pin-compatible Flash-memory or RAM variant can be selected without a PCB change.