STMicroelectronics STM32F103VDH6

Overview

STM32F103VDH6 from STMicroelectronics is a high-density performance-line Arm® Cortex®-M3 microcontroller featuring 384 KB Flash, 64 KB SRAM, 72 MHz CPU frequency, USB 2.0 full-speed and CAN 2.0B interfaces, and triple 12-bit ADCs with 21 channels - deployed in industrial motor control systems requiring real-time PWM generation, analog sensing, and fieldbus communication.

For engineers reviewing the STM32F103VDH6 datasheet, STM32F103VDH6 pinout, STM32F103VDH6 application, or STM32F103VDH6 equivalent, key selection criteria include Flash/SRAM capacity, 72 MHz deterministic timing, dual 12-bit DACs for analog output, 112 I/Os with 5 V tolerance, and integrated USB/CAN coexistence in a single LQFP100 package.

Technical Context

The STM32F103VDH6 implements an Arm Cortex-M3 core with Harvard architecture, 3-stage pipeline, and hardware integer divider; it supports zero-wait-state execution from Flash at 72 MHz via adaptive real-time prefetch. Its nested vectored interrupt controller (NVIC) handles up to 60 maskable interrupts with programmable priority levels and tail-chaining.

Peripherals are clocked via a flexible multi-source system: HSE (4–16 MHz), HSI (8 MHz RC), LSE (32.768 kHz), and LSI (40 kHz RC); the PLL supports multiplication factors of 2–16 to generate the 72 MHz system clock. The FSMC enables direct interface to external NOR/PSRAM/NAND memories and LCD modules in 8080/6800 modes.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified - suitable for automated SMT assembly and industrial-grade thermal cycling reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit ARM Cortex-M3 microcontroller applications.

Compared with STM32F103VET6, the STM32F103VDH6 trades Flash capacity for lower cost and identical peripheral count; versus STM32F407VGT6, it offers proven industrial qualification at lower power and reduced software complexity, making it optimal for deterministic motion control without floating-point dependency.

Availability

STM32F103VDH6 is available at Aetrix Electronics and suitable for industrial motor drives, building automation gateways, medical infusion pumps, and energy meter data concentrators requiring stable component supply across extended product lifecycles.

Supply support for STM32F103VDH6 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, Switzerland, designing and manufacturing microcontrollers, power management ICs, MEMS sensors, and automotive SoCs since 1987.

The STM32F103 series belongs to ST's foundational Cortex-M3 portfolio, engineered specifically for cost-sensitive, high-reliability industrial control applications demanding rich analog integration, deterministic real-time response, and long-term supply assurance.

FAQ

What is the maximum operating temperature range for STM32F103VDH6?

The STM32F103VDH6 is rated for industrial temperature range: –40 °C to +85 °C ambient, verified per JEDEC JESD22-A108. Thermal characteristics in DS5792 Rev 13 specify junction-to-ambient thermal resistance (R_θJA) of 39.2 °C/W for LQFP100, enabling reliable operation at full 72 MHz under natural convection cooling with ≤2 cm² copper pour.

Does STM32F103VDH6 support USB device mode only, or also host mode?

The STM32F103VDH6 integrates a USB 2.0 full-speed device-only controller compliant with USB Specification Revision 2.0. It does not support USB host or OTG functionality - no dedicated USB host PHY or session request protocol (SRP) logic is present. External USB host capability requires companion ICs such as USB3300 or MAX3421E.

How many CAN interfaces does STM32F103VDH6 provide, and what protocol versions are supported?

The STM32F103VDH6 includes one CAN 2.0B-compliant controller supporting both standard (11-bit) and extended (29-bit) identifier frames, with programmable bit timing up to 1 Mbit/s. It lacks ISO 11898-3 fault-tolerant physical layer support; external CAN transceivers (e.g., TJA1050) are required for bus interfacing.

Is the internal 8 MHz RC oscillator factory-trimmed, and what is its accuracy over temperature?

Yes, the internal 8 MHz HSI RC oscillator is factory-trimmed to ±1% accuracy at 25 °C. Over the full –40 °C to +85 °C range, datasheet DS5792 Rev 13 specifies typical variation of ±2.5% (max ±4.5%) - sufficient for non-critical timing but not for USB or CAN bit timing without PLL stabilization or external crystal.