The LPC1547JBD64151: 32-bit ARM Cortex-M3 MCU, 72 MHz, 64 KB Flash, 12 KB RAM, 4 KB EEPROM. Operates from 2.4 V to 3.6 V, -40°C to 105°C, 64-LQFP (10x10 mm), 44 I/O.
72 MHz Cortex-M3 — what it means for throughput
72 MHz core handles real-time control loops and communication stacks. Cortex-M3 includes hardware divide and single-cycle multiply.
The 12 KB RAM supports a few moderate-sized buffers; if your application streams USB data or runs multiple protocol stacks, check the RAM budget early. The 4 KB EEPROM is separate from Flash — useful for calibration constants or configuration parameters that get rewritten in the field without wearing the main Flash.
The CAN controller is a plus for industrial automation nodes or automotive-adjacent gateways. The USB interface can act as device or host, which simplifies firmware updates via a thumb drive. On-chip peripherals include a 12-bit ADC with 24 channels, a PWM unit, DMA, and a watchdog timer — enough to handle sensor acquisition and motor commutation without external logic.