STMicroelectronics STM32F103C4

The STMicroelectronics STM32F103C4 is an ARM 32-bit Cortex-M3 Microcontroller, 72MHz, 16kB Flash, 6kB SRAM, PLL, Embedded Internal RC 8MHz and 32kHz, Real-Time Clock, Nested Interrupt Controller, Power Saving Modes, JTAG and SWD, 2 Synch. 16-bit Timers with Input Capture, Output Compare and PWM, 16-bit 6-ch Advanced Timer, 2 16-bit Watchdog Timers, SysTick Timer, SPI, I2C, 2 USART, USB 2.0 Full Speed Interface, CAN 2.0B Active, 2 12-bit 10-ch A/D Converter, Fast I/O Ports.