The NXP LPC12D27FBD100/301551 is a 32-bit ARM Cortex-M0 single-core microcontroller running at 45 MHz, with 128 KB of flash and 8 KB of SRAM. The part is specified for the -40°C to 85°C industrial temperature range and operates from a 3 V to 3.6 V supply rail.
At 45 MHz, this core handles moderate-throughput tasks — sensor polling, Modbus RTU framing, motor commutation at a few kHz — without needing a Cortex-M3 or M4.
