32 MHz ARM Cortex-M3, 128 KB Flash — what it means for a low-power BOM
The 1.8 V to 3.6 V supply range lets it run directly from a single Li-ion cell or two alkaline batteries, and the -40 °C to 85 °C temperature grade covers industrial and outdoor enclosures. On-chip peripherals include USB, I²C, SPI, UART, a 12-bit ADC with 16 channels, and a 12-bit DAC with two channels, so a typical application is a battery-powered data logger or a sensor node that talks to a host over USB without an external transceiver.
Supply range and USB — the fit for single-cell battery designs
USB connectivity is built in.