STMicroelectronics STM32F101VB

The STMicroelectronics STM32F101VB is an ARM 32-bit Cortex-M3 Microcontroller, 36MHz, 128kB Flash, 16kB SRAM, PLL, Embedded Internal RC 8MHz and 32kHz, Real-Time Clock, Nested Interrupt Controller, Power Saving Modes, JTAG and SWD, 3 Synch. 16-bit Timers with Input Capture, Output Compare and PWM, 2 16-bit Watchdog Timers, SysTick Timer, 2 SPI, 2 I2C, 3 USART, 12-bit 16-ch A/D Converter, Fast I/O Ports.