Polyphase metering MCU with seven 24-bit sigma-delta ADCs
The Texas Instruments MSP430F6777AIPZ is a 16-bit MCU built around the MSP430 CPUXV2 core running at 25 MHz, with 256 KB Flash and 32 KB SRAM. Its defining feature is the set of seven 24-bit sigma-delta ADCs — purpose-built for polyphase energy metering where each phase plus neutral needs a dedicated conversion channel. The 8x10-bit SAR ADC handles auxiliary measurements like temperature or tamper detection. Communication interfaces include I²C, SPI, UART/USART, IrDA, and LINbus, making it straightforward to connect to a host processor or sub-GHz radio for AMI networks.
Industrial temperature range and package
The MSP430F6777AIPZ operates from -40°C to 85°C. The 100-LQFP package (14x14 mm) provides 62 I/O lines.
