50 MHz Cortex-M0+ with metrology-grade analog on board
The part integrates a 16-bit SAR ADC, a 24-bit sigma-delta ADC, and a 6-bit DAC — a mixed-signal front end that typically needs an external converter on competing MCUs. An on-chip LCD controller drives segment displays directly, saving a glass-driver IC and the associated board area.
Serial interfaces include I²C, SPI, and UART/USART — the standard set for sensor aggregation and Modbus RTU links. DMA offloads data movement from the CPU core, useful when the sigma-delta ADC runs continuous conversions. The watchdog timer (WDT) provides a supervised reset path for unattended equipment.
NXP lists the MKM33Z64CLL5R-FR as Active on the product lifecycle.