Metering-class MCU with integrated sigma-delta ADC and LCD drive
The distinguishing feature set includes four 24-bit sigma-delta analog-to-digital converters and an integrated LCD driver — purpose-built for polyphase energy metering, flow measurement, and precision industrial instrumentation where multiple high-resolution analog channels must be digitized simultaneously.
What the 4x24-bit sigma-delta ADC means for the BOM
The four 24-bit sigma-delta converters are the headline reason to pick this part over a general-purpose MCU. They allow direct connection of current and voltage transformer secondaries in a three-phase meter without an external analog front-end. The LCD driver further eliminates a separate display controller. For a BOM cost engineer, this part consolidates what would otherwise be an MCU plus an external ADC plus a display driver into a single 100-LQFP package — but only if the design can tolerate the 25 MHz CPU speed and 256 KB Flash ceiling.
Obsolete — last-time-buy planning needed
The MSP430F6746IPZR carries an obsolete lifecycle status. For a production line that depends on this exact order code, the window for last-time-buy orders has closed at the factory. Sourcing now runs through independent distribution on a quoted-to-order basis.