Description
The STM32F301x6/8 family is based on the high-performance ARM® Cortex®-M4 32-bit RISC core operating at a frequency of up to 72 MHz and embedding a floating point unit (FPU). The family incorporates high-speed embedded memories (up to 64 Kbytes of Flash memory, 16 Kbytes of SRAM), and an extensive range of enhanced I/Os and peripherals connected to two APB buses.
The devices offer a fast 12-bit ADC (5 Msps), three comparators, an operational amplifier, up to 18 capacitive sensing channels, one DAC channel, a low-power RTC, one generalpurpose 32-bit timer, one timer dedicated to motor control, and up to three general-purpose 16-bit timers, and one timer to drive the DAC. They also feature standard and advanced communication interfaces: three I2Cs, up to three USARTs, up to two SPIs with multiplexed full-duplex I2S, and an infrared transmitter.
The STM32F301x6/8 family operates in the –40 to +85°C and –40 to +105°C temperature ranges from at a 2.0 to 3.6 V power supply. A comprehensive set of power-saving mode allows the design of low-power applications.
The STM32F301x6/8 family offers devices in 32-, 48-, 49- and 64-pin packages.
The set of included peripherals changes with the device chosen.

Features
• Core: ARM® 32-bit Cortex®-M4 CPU with FPU (72 MHz max.), single-cycle multiplication and HW division, DSP instruction
• Memories
   – 32 to 64 Kbytes of Flash memory
   – 16 Kbytes of SRAM on data bus
• CRC calculation unit
• Reset and power management
   – VDD, VDDA voltage range: 2.0 to 3.6 V
   – Power-on/Power down reset (POR/PDR)
   – Programmable voltage detector (PVD)
   – Low-power: 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 51 fast I/O ports, all mappable on external interrupt vectors, several 5 V-tolerant
• Interconnect matrix
• 7-channel DMA controller supporting timers, ADCs, SPIs, I2Cs, USARTs and DAC
• 1 × ADC 0.20 μs (up to 15 channels) with selectable resolution of 12/10/8/6 bits, 0 to 3.6 V conversion range, single ended/differential mode, separate analog supply from 2.0 to 3.6 V
• Temperature sensor
• 1 x 12-bit DAC channel with analog supply from 2.4 to 3.6 V
• Three fast rail-to-rail analog comparators with analog supply from 2.0 to 3.6 V
• 1 x operational amplifier that can be used in PGA mode, all terminal accessible with analog supply from 2.4 to 3.6 V
• Up to 18 capacitive sensing channels supporting touchkey, linear and rotary sensors
• Up to 9 timers
   – One 32-bit timer with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
   – One 16-bit 6-channel advanced-control timer, with up to 6 PWM channels, deadtime generation and emergency stop
   – Three 16-bit timers with IC/OC/OCN or PWM, deadtime gen. and emergency stop
   – One 16-bit basic timer to drive the DAC
   – 2 watchdog timers (independent, window)
   – SysTick timer: 24-bit downcounter
• Calendar RTC with alarm, periodic wakeup from Stop/Standby
• Communication interfaces
   – Three I2Cs with 20 mA current sink to support Fast mode plus
   – Up to 3 USARTs, 1 with ISO 7816 I/F, auto baudrate detect and Dual clock domain
   – Up to two SPIs with multiplexed full duplex I2S
   – Infrared transmitter
• Serial wire debug (SWD), JTAG
• 96-bit unique ID