The NXP LPC1115FET48/303151 is a 32-bit ARM Cortex-M0 MCU from the LPC1100XL series, clocked at 50 MHz with 64 KB Flash and 8 KB RAM. It packs 42 GPIO, an 8-channel 10-bit SAR ADC, and I²C / SPI / UART serial interfaces into a 48-TFBGA package measuring 4.5×4.5 mm. The 1.8 V to 3.6 V supply range and -40 to 85 °C industrial temperature rating suit it for sensor nodes, motor-control front ends, and human-machine interface panels where board space is tight and a BGA reflow line is available.
Memory sizing and field updates
64 KB Flash and 8 KB RAM handle a typical firmware image with a Modbus RTU stack.
The LPC1115FET48/303151 is listed as Active, meaning NXP continues to manufacture it without an announced end-of-life. No official successor or second-source alternate is recorded — the LPC1100XL series is the current production baseline.