The NXP LPC812M101JD20FP is a 32-bit ARM Cortex-M0+ microcontroller in the LPC81xM series, clocked at 30 MHz with 16 KB of Flash and 4 KB of SRAM. It packs 18 general-purpose I/O lines plus I²C, SPI, and UART serial interfaces into a 20-pin SOIC package. The wide supply range of 1.8 V to 3.6 V and industrial temperature grade of -40 to 105 °C make it a natural fit for sensor nodes, small motor controllers, and communication bridges in factory automation or outdoor telecom gear.
The 30 MHz Cortex-M0+ handles bit-banged protocols, periodic sensor reads, and simple PID loops. It is not built for heavy DSP or high-speed data logging.
Memory budget: 16 KB Flash, 4 KB SRAM
16 KB of Flash and 4 KB of SRAM support a UART bootloader, I²C drivers, and a state machine. No dynamic memory allocation or large lookup tables.