50 MHz Cortex-M0 — what the clock rate buys you
The LPC1112JHN33/203E runs its ARM Cortex-M0 core at 50 MHz, which is the top speed for the LPC1100XL series. At this clock, single-cycle 32-bit multiply and a two-stage pipeline keep loop overhead low for motor commutation, sensor polling, or Modbus frame handling. The 16 KB Flash and 4 KB RAM are paired for small-footprint firmware — think one control loop plus a serial protocol stack, not a GUI or file system.
Industrial temperature range — where it goes
Serial interfaces and I/O count
With 28 GPIO and I²C, SPI, and UART blocks, this part handles typical sensor-to-controller links — an I²C temperature sensor, SPI ADC, and a UART debug or Modbus line all fit without external muxing.
Supply voltage and brown-out protection
The integrated brown-out detect and POR circuits reset the core on supply dips.