Description
The STM32F302xx/STM32F303xx family is based on the high-performance ARM® Cortex™-M4F 32-bit RISC core operating at a frequency of up to 72 MHz, and embedding a floating point unit (FPU), a memory protection unit (MPU) and an embedded trace macrocell (ETM). The family incorporates high-speed embedded memories (up to 256 Kbytes of Flash memory, up to 48 Kbytes of SRAM) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

Features
■ Core: ARM® 32-bit Cortex™-M4F CPU (72 MHz max), single-cycle multiplication and HW division, DSP instruction with FPU (floating-point unit) and MPU (memory protection unit).
■ Operating conditions:
    – VDD, VDDA voltage range: 2.0 V to 3.6 V
■ Memories
    – 128 to 256 Kbytes of Flash memory
    – Up to 40 Kbytes of SRAM on data bus with HW parity check
    – 8 Kbytes of SRAM on instruction bus with HW parity check (CCM)
■ CRC calculation unit
■ Reset and supply management
    – Power-on/Power down reset (POR/PDR)
    – Programmable voltage detector (PVD)
    – Low power modes: Sleep, Stop and Standby
    – VBAT supply for RTC and backup registers
■ Clock management
    – 4 to 32 MHz crystal oscillator
    – 32 kHz oscillator for RTC with calibration
    – Internal 8 MHz RC with x 16 PLL option
    – Internal 40 kHz oscillator
■ Up to 87 fast I/Os
    – All mappable on external interrupt vectors
    – Several 5 V-tolerant
■ 12-channel DMA controller
■ Up to four ADC 0.20 µS (up to 39 channels) with selectable resolution of 12/10/8/6 bits, 0 to 3.6 V conversion range, separate analog supply from 2 to 3.6 V
■ Up to two 12-bit DAC channels with analog supply from 2.4 to 3.6 V
■ Seven fast rail-to-rail analog comparators with analog supply from 2 to 3.6 V
■ Up to four operational amplifiers that can be used in PGA mode, all terminal accessible with analog supply from 2.4 to 3.6 V
■ Up to 24 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
■ Up to 13 timers
    – One 32-bit timer and two 16-bit timers with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
    – Up to two 16-bit 6-channel advanced-control timers, with up to 6 PWM channels, deadtime generation and emergency stop
    – One 16-bit timer with 2 IC/OCs, 1 OCN/PWM, deadtime generation and emergency stop
    – Two 16-bit timers with IC/OC/OCN/PWM, deadtime generation and emergency stop
    – Two watchdog timers (independent, window)
    – SysTick timer: 24-bit downcounter
    – Up to two 16-bit basic timers to drive the DAC
■ Calendar RTC with Alarm, periodic wakeup from Stop/Standby
■ Communication interfaces
    – CAN interface (2.0B Active)
    – Two I2C Fast mode plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus, wakeup from STOP – Up to five USART/UARTs (ISO 7816 interface, LIN, IrDA, modem control)
    – Up to three SPIs, two with multiplexed I2S interface, 4 to 16 programmable bit frame
    – USB 2.0 full speed interface
    – Infrared Transmitter
■ Serial wire debug, JTAG, Cortex-M4F ETM
■ 96-bit unique ID