The 25 MHz clock is fast enough to handle the sigma-delta decimation filter in real time while refreshing the LCD and managing a UART or SPI link to a host. The dual ADC architecture — two 24-bit sigma-delta channels plus an 8-channel 10-bit SAR — means this one chip replaces a separate AFE and a smaller MCU in a polyphase meter. The 72 GPIOs give you room for tamper detection, relay drivers, and a keypad matrix without a port expander.
Listed as Active.
