Product Descriptions

The STM32F303xB/STM32F303xC family is based on the high-performance Arm® Cortex®-M4 32-bit RISC core with FPU 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 40 Kbytes of SRAM) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

The devices offer up to four fast 12-bit ADCs (5 Msps), seven comparators, four operational amplifiers, up to two DAC channels, a low-power RTC, up to five general-purpose 16-bit timers, one general-purpose 32-bit timer, and two timers dedicated to motor control. They also feature standard and advanced communication interfaces: up to two I2Cs, up to three SPIs (two SPIs are with multiplexed full-duplex I2Ss), three USARTs, up to two UARTs, CAN and USB. To achieve audio class accuracy, the I2S peripherals can be clocked via an external PLL.

The STM32F303xB/STM32F303xC family operates in the -40 to +85 °C and -40 to +105 °C temperature ranges from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving mode allows the design of low-power applications.

The STM32F303xB/STM32F303xC family offers devices in four packages ranging from 48 pins to 100 pins.

The set of included peripherals changes with the device chosen.

Product Features

• Core: Arm® Cortex®-M4 32-bit CPU with FPU  (72 MHz max), single-cycle multiplication and  HW division, 90 DMIPS (from CCM), DSP  instruction 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, with HW parity  check implemented on the first 16 Kbytes. 

– Routine booster: 8 Kbytes of SRAM on  instruction and data 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 

• Interconnect matrix 

• 12-channel DMA controller 

• Four ADCs 0.20 µS (up to 39 channels) with  selectable resolution of 12/10/8/6 bits, 0 to  3.6 V conversion range, single  ended/differential input, separate analog  supply from 2 to 3.6 V 

• 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 

• Four operational amplifiers that can be used in  PGA mode, all terminals 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 

– 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 

– 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  half/full duplex I2S interface, 4 to 16  programmable bit frames 

– USB 2.0 full speed interface – Infrared transmitter

• Serial wire debug, Cortex®-M4 with FPU ETM,  JTAG 

• 96-bit unique ID

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