STMicroelectronics, 32bit ARM Cortex M3, STM32 Microcontroller, 72MHz, 1 Mbyte Flash, 100-Pin LQFP

The STMicroelectronics Mainstream microcontrollers incorporates the high-performance ARM®Cortex®-M3 32-bit RISC core operating at a 72 MHz frequency, high-speed embedded memories (Flash memory up to 1 Mbyte and SRAM up to 96 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. All devices offer three 12-bit ADCs, ten general-purpose 16-bit timers plus two PWM timers, as well as standard and advanced communication interfaces up to two I2Cs, three SPIs, two I2Ss, one SDIO, five USARTs, an USB and a CAN.

768 Kbytes to 1 Mbyte of Flash memory
96 Kbytes of SRAM
Single cycle multiplication and hardware division
4 to 16 MHz crystal oscillator
Internal 8 MHz factory trimmed RC
Internal 40 kHz RC with calibration
32 kHz oscillator for RTC with calibration
Up to 13 communication interfaces