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STM32 F3 series of mixed-signal MCUs with DSP and FPU instructions

The STM32 F3 series combines a 32-bit ARM Cortex-M4 core (DSP, FPU) running at 72 MHz with a high number of integrated analog peripherals leading to cost reduction at application level and simplifying application design, including:

  • Ultra-fast comparators (<30 ns)
  • Op-amp with programmable gain (PGA)
  • 12-bit DACs
  • Ultra-fast 12-bit ADCs with 5 MSPS per channel (up to 18 MSPS in interleaved mode)
  • Precise 16-bit sigma-delta ADCs (21 channels)
  • CCM-SRAM (Core Coupled Memory SRAM), a specific memory architecture for time-critical routines, accelerating the performance by 43%
  • 144 MHz Advanced 16- bit PWM timer (resolution < 7 ns) for control application
  • High resolution timer (217ps), self-compensated vs power supply and temperature drift

A flexible interconnect matrix allows autonomous communication between peripherals and saves CPU resources and power consumption.

A high degree of compatibility with STM32 F0 series guarantees outstanding efficiency when designing derivatives of applications at different performance levels.

The STM32 F3 series consists of:

  • The STM32F301, STM32F302, STM32F303 general purpose product lines ranging from a basic, cost efficient peripheral set, up to more performance and analog functions able to manage up to triple FOC motor control,
  • The STM32F334 with high-resolution timer (217ps) for digital power conversion, such as D-SMPS, lighting, welding, solar and wireless charging,
  • The STM32F373, with 16 bit sigma-delta ADC for high precision measurements in applications such as biometric sensors or smart metering,
  • The STM32F3x8 line, supporting 1.8V operation

Package options are LQPF48/64/100, UFBGA100, WLCSP66/49, UQFN32 for the devices ranging now from to 32 up to 512 Kbytes of Flash.

Highly efficient digital power conversion with new STM32F3 MCU

The STM32F334 is specifically developed to drive efficient digital power conversion applications.

Additional features:

  • Temperature- and voltage-compensated hi-res timer with 217ps PWM resolution
  • 12-bit ADCs with 5 MSPS
  • Ultrafast comparators with 26ns reaction time for increased safety

A high-resolution timer cookbook and a dedicated D-SMPS evaluation board (STEVAL-ISA147V2) help accelerate application development.

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