What this 16-bit MCU brings to a metering or industrial design
The peripheral set also includes a DMA controller, an LCD driver, PWM timers, a watchdog, and brown-out detection, all wrapped in a 128-pin LQFP package with 90 I/O lines.
The sigma-delta ADC array — why this part was chosen for metering
The six 24-bit sigma-delta converters are the headline feature. They allow simultaneous sampling of voltage and current on three phases in a polyphase energy meter, with enough resolution to meet IEC 62053 class 0.5 accuracy without an external AFE. The 16-bit core handles the compute load for active/reactive power calculation, harmonic analysis, and tamper detection, while the DMA moves conversion results without CPU intervention.
The MSP430F6766IPEUR is officially marked Obsolete by Texas Instruments. There is no direct pin-compatible replacement announced by TI for this exact order code, but the MSP430F6xx family includes other 128-pin devices with similar sigma-delta ADC blocks — a design review is needed to confirm peripheral and memory match before substituting.
Package and temperature — board-fit checks
The device comes in a 128-LQFP package (20x14 mm body) with a 0.4 mm pitch — a standard footprint for industrial metering boards, but the fine pitch means the PCB fab needs a Class 3 solder mask registration for reliable assembly.