* USB 2.0 device (12 Mbps, formerly called Full Speed USB) with on-chip USB PHY and integrated ROM drivers including Human Interface Device Class (HID), Mass Storage Device Class (MSC), and Communication Device Class (CDC)
* ARM Cortex-M0+ processor, up to 50 MHz
* Up to 256 KB flash, up to 36 KB SRAM
* 4 KB EEPROM
* 5 USARTS, 2 I2C, 2 SPI, and up to 80 GPIOs
* 12-channel, 12-bit, 2-Msps ADC
* Timers: 2 SCT/PWMs, 2 16-bit timers, 2 32-bit timers
* Low power features: RTC, low power modes, power profiles
* Packages: LQFP48, LQFP64, LQFP100