The NXP LPC824M201JHI33Y is a 32-bit ARM Cortex-M0+ microcontroller from the LPC82x series, clocked at 30 MHz with 32 KB of Flash and 8 KB of RAM. It has 29 GPIO, a 12-channel 12-bit ADC, and I²C, SPI, UART/USART interfaces.
The 32-HVQFN package with exposed pad helps pull heat into the PCB ground plane — a detail that matters when the part is running continuous ADC conversions and serial traffic near the top of the temperature range.
It handles a modest firmware image with a bootloader, a few communication stacks, and a moderate lookup table.
Serial interfaces and peripheral set
I²C, SPI, and UART/USART are all present on this die, along with a 12-channel 12-bit ADC, PWM outputs, DMA, and a watchdog timer. The 29 GPIO lines are enough to interface with a parallel LCD character display, a keypad matrix, and a few status LEDs while still leaving serial buses free for sensor communication.