Core, memory, and footprint at a glance
The STM32L010RBT6: It also carries 512 bytes of embedded EEPROM, which can store calibration constants or configuration data without an external serial EEPROM.
On-chip peripherals and connectivity
Built-in peripherals include brown-out detect, POR, PWM, WDT, and DMA — enough to handle sensor polling, motor timing, and watchdog supervision without external glue logic. Connectivity covers I²C, SPI, UART/USART, and IrDA, so it can talk to common sensor modules, displays, or wireless transceivers. For applications that require precise timing, an external clock can still be fed in through the oscillator pins.