The STM32F334x4/6/8 family incorporates the high-performance Arm? Cortex?-M4 32-bit RISC core operating at up to 72 MHz frequency embedding a floating point unit (FPU), high-speed embedded memories (up to 64 Kbytes of Flash memory, up to 12 Kbytes of SRAM), and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

Core: Arm? Cortex?-M4 32-bit CPU with FPU

(72 MHz max), single-cycle multiplication and

HW division DSP instruction

Memories

– Up to 64 Kbytes of Flash memory

– Up to 12 Kbytes of SRAM with HW parity

check

– Routine booster: 4 Kbytes of SRAM on

instruction and data bus with HW parity

check (CCM)

CRC calculation unit

Reset and supply management

– Low-power modes: Sleep, Stop, Standby

– VDD,VDDA voltage range: 2.0 to 3.6 V

– Power-on/Power-down reset (POR/PDR)

– Programmable voltage detector (PVD)

– 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 (up to 64 MHz with 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

Up to two ADC 0.20 μs (up to 21 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

Up to three 12-bit DAC channels with analog

supply from 2.4 V to 3.6 V