STM32F0 Series

STM32 F0 Entry-level ARM Cortex-M0 MCUs
Devices in ST’s ARM® Cortex®-M0-based STM32 F0 series deliver 32-bit performance while featuring the essentials of the STM32 family and are particularly suited for cost-sensitive applications. STM32 F0 MCUs combine real-time performance, low-power operation, and the advanced architecture and peripherals of the STM32 platform.
The STM32F0x0 Value line is highly competitive in traditional 8-bit and 16-bit markets and eliminates the need to manage different architectures and the associated development overhead. If your device needs a USB peripheral, it’s now possible to order an STM32F070 Value line MCU.
The STM32F0x1 line provides a high integration of functions and covers a wide range of memory sizes and packages, bringing flexibility to cost-sensitive applications. 
The STM32F0x2 line provides rich connectivity with crystal-less USB 2.0 and a CAN bus interface, making it the ideal choice for communication gateways, smart-energy devices or game terminals.
The STM32F0x8-line operating at 1.8V ±8% is well suited for use in portable consumer applications such as smartphones, accessories and media devices.
The STM32 turns the one-architecture-fits-all concept into reality.
Offered in various package types, the STM32 F0 series satisfies the needs of a large variety of applications and segments.


http://www.st.com/en/microcontrollers/stm32f0-series.html?querycriteria=productId=SS1574


STM32F0x2 USB Line

STM32F0x2 crystal-less USB 2.0 FS enlarges the STM32 F0 series with up to 128 Kbytes of Flash and 16 Kbytes of SRAM
These new STM32 F0 devices offer a crystal-less USB 2.0 FS interface with a link power management (LPM) feature and compliant with battery charger detection (BCD) specification 1.2, thus eliminating the need for an external crystal oscillator to generate the precision clock required by the USB protocol. Together with the support of CAN, USART, I²C, SPI (I²S) and HDMI CEC, the new STM32 F0 devices enable product developers to increase system integration, reduce costs, and exceed the traditional price/performance limitations imposed by older, proprietary 8-bit or 16-bit microcontrollers for USB device or USB- controller applications.
The STM32F072 series provides 64 to 128 Kbytes of Flash memory in 48-, 64- or 100-pin packages. The STM32F042 series comprises variants with 16 to 32 Kbytes of Flash memory and 20-, 28-, 32- and 48-pin package options.

http://www.st.com/content/st_com/en/products/microcontrollers/stm32-32-bit-arm-cortex-mcus/stm32-mainstream-mcus/stm32f0-series/stm32f0x2.html?querycriteria=productId=LN1823