STMicroelectronics STM32F102RB

The STMicroelectronics STM32F102RB is an ARM 32-bit Cortex-M3 Microcontroller, 48MHz, 128kB Flash, 16kB SRAM, PLL, Embedded Internal RC 8MHz and 32kHz, Real-Time Clock, USB 2.0 Full Speed Interface, 7-channel DMA, Nested Interrupt Controller, Power Saving Modes, JTAG and SWD, 2 Synch. 3 16-bit Timers with Input Capture, Output Compare and PWM, 2 16-bit Watchdog Timers, SysTick Timer, 2 SPI, 2 I2C, 3 USART, CRC Calculation Unit, 12-bit 16-ch A/D Converter, up to 51 Fast I/O Ports.