MSP430F6733AIPZ — 16-bit MCU for metering and precision sensing
The 16-bit MCU runs at 25 MHz. It carries 64 KB of Flash program memory and 4K x 8 of RAM, with 72 general-purpose I/O lines. The dual ADC block has eight 10-bit channels and three 24-bit sigma-delta channels.
25 MHz core — what it means for the BOM
The 25 MHz clock rate is the ceiling for the pipeline. For a metering application running a 24-bit ADC and a Modbus stack, this is enough headroom to handle the math without a co-processor.
Dual ADC — 24-bit sigma-delta for metrology
The three 24-bit sigma-delta ADCs support simultaneous sampling, which is critical for polyphase energy measurement. The eight 10-bit channels handle auxiliary signals like temperature or tamper detection.
Lifecycle and sourcing reality
Package and temperature grade
The 100-LQFP package (14x14 mm body) is a surface-mount footprint. The -40°C to 85°C operating range covers most factory-floor and outdoor telecom enclosures. Supply voltage spans 1.8 V to 3.6 V.