The NXP LPC1765FBD100K is a 32-bit ARM Cortex-M3 microcontroller running at 100 MHz, with 256 KB of Flash and 64 KB of RAM. It sits in the LPC17xx family and is built for industrial control and connectivity-heavy applications where a mix of CANbus, USB OTG, and multiple serial interfaces (I²C, SPI, UART) is needed on a single chip. The 70 general-purpose I/O lines and the 8-channel 12-bit ADC give it the headroom for sensor feedback and actuator control in a motor-drive or PLC I/O module.
100 MHz Cortex-M3 — what it buys you
At 100 MHz, this core handles a real-time control loop and still has cycles left for CANbus message handling and a UART stack. The 64 KB of RAM is enough for moderate data buffers.
Connectivity and peripherals
The CANbus controller is the standout for industrial networking — it saves an external CAN transceiver interface chip. USB OTG adds device/host flexibility for field-upgrade or data-logging scenarios. The motor-control PWM and the I²S audio interface are less common on a mid-range MCU; if you need neither, you are still paying for the silicon, but the CAN and USB alone justify the part for many BOMs.
Package and footprint
The 100-LQFP package (14×14 mm body) is a standard footprint that routes easily on a two-layer board. The 70 I/O are accessible on all four sides, so layout for a mixed-signal design with the ADC inputs kept away from the PWM outputs is straightforward.