STMicroelectronics STM32F3348-DISCO

Overview

STM32F3348-DISCO from STMicroelectronics is a Discovery kit built around the STM32F334C8T6 32-bit Arm® Cortex®-M4 microcontroller (64 KB Flash, 16 KB RAM, LQFP48), featuring an integrated buck/boost converter and high-brightness LED dimming circuitry for digital power application prototyping.

For engineers reviewing the STM32F3348-DISCO datasheet, STM32F3348-DISCO pinout, STM32F3348-DISCO application, or STM32F3348-DISCO equivalent, this board delivers ready-to-use ST-LINK/V2-1 debug interface, extension headers for full I/O access, dual power options (USB VBUS or external 3/5 V), and preloaded demonstration firmware for rapid evaluation of STM32F334 digital power peripherals.

Technical Context

The board implements the STM32F334C8T6 MCU with hardware-accelerated digital power control peripherals including three advanced timers (TIM1/TIM8/TIM15) supporting center-aligned PWM, flexible dead-time insertion, and synchronous ADC triggering - essential for resonant DC-DC converter control.

It integrates a discrete buck/boost converter stage with current-sense feedback and a dedicated high-current LED driver channel using the same buck topology, both directly controlled by the MCU's PWM outputs and monitored via internal 12-bit ADC channels with hardware oversampling.

Key Specifications

Availability

STM32F3348-DISCO is available at Aetrix Electronics and suitable for digital power converter development, LED driver validation, and STM32F334-based embedded control prototyping requiring stable component supply and full debug integration.

Supply support for STM32F3348-DISCO includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

This Discovery kit belongs to ST's STM32 evaluation platform family, engineered specifically to accelerate development of digital power control systems using the STM32F334's advanced timer and ADC capabilities for resonant converters and LED drivers.

FAQ

Does STM32F3348-DISCO support standalone operation without a host PC?

Yes - the board can run preloaded demonstration firmware independently using its on-board power sources (USB VBUS or external 3/5 V). The STM32F334C8T6 executes firmware from internal Flash, and LEDs LD1–LD6 provide visual feedback for power status, USB activity, and user-programmed behavior without host connection.

Can the buck/boost converter be used as a programmable DC-DC supply for external circuits?

Yes - the buck/boost stage includes test points and accessible feedback resistors, allowing output voltage adjustment (typically 1.8–5.0 V range) and current monitoring. Its control signals are routed to the MCU's TIM1_CH1/CH2 and ADC1_IN1, enabling closed-loop regulation via firmware.

Is the ST-LINK/V2-1 on STM32F3348-DISCO usable as a standalone debugger for other STM32 boards?

Yes - a mode switch allows reconfiguration of the ST-LINK/V2-1 as a standalone debugger. When set to "External" mode, the SWD connector provides standard SWDIO/SWCLK/TNRST/GND signals compatible with any STM32 target board supporting SWD debugging.

What software tools are officially supported for firmware development on this kit?

ST officially supports STM32CubeIDE (cross-platform), IAR Embedded Workbench® (Windows), and Keil MDK-ARM (Windows). All integrate with the on-board ST-LINK/V2-1 and support the STM32CubeF3 firmware package, including HAL drivers, middleware, and digital power examples for the F334 series.