STMicroelectronics STM32F103VEH6

Overview

STM32F103VEH6 from STMicroelectronics is a high-density performance-line Arm® Cortex®-M3 microcontroller featuring 512 KB Flash, 64 KB SRAM, USB 2.0 full-speed interface, CAN 2.0B controller, and three 12-bit ADCs with up to 21 channels - deployed in industrial motor control systems requiring real-time PWM generation, analog sensing, and fieldbus communication.

For engineers reviewing the STM32F103VEH6 datasheet, STM32F103VEH6 pinout, STM32F103VEH6 application, or STM32F103VEH6 equivalent, key selection criteria include 72 MHz CPU clock, LQFP100 package compatibility, dual 12-bit DAC outputs, 112 I/O pins (5 V-tolerant), and integrated FSMC for external memory expansion in HMI and PLC designs.

Technical Context

The STM32F103VEH6 implements an Arm Cortex-M3 core with Harvard architecture, 3-stage pipeline, and hardware integer divider - enabling deterministic 1.25 DMIPS/MHz execution at 72 MHz with zero-wait-state Flash access. It integrates nested vectored interrupt controller (NVIC) supporting 68 maskable interrupts and 16 priority levels.

Its peripheral subsystem includes a flexible static memory controller (FSMC) with four chip selects for NOR/PSRAM/NAND/CompactFlash, parallel LCD interface (8080/6800 modes), and dual watchdog timers (independent + window) - all synchronized to a multi-source clock tree with PLL, HSE (4–16 MHz), HSI (8 MHz), and LSE (32.768 kHz) oscillators.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified - suitable for automated SMT assembly and thermal management in enclosed industrial enclosures.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F103ZET6, the VEH6 offers identical peripheral set in smaller LQFP100 form factor - ideal for space-constrained PLC modules. Versus STM32F407VGT6, it retains FSMC and lower power consumption but lacks FPU - making it preferable for deterministic real-time control where integer math suffices.

Availability

STM32F103VEH6 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, human-machine interfaces, and energy metering gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32F103VEH6 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, specializing in microcontrollers, power management, and automotive ICs - with over 40 years of industrial-grade silicon expertise.

The STM32F103xE series targets high-reliability embedded control applications demanding rich analog integration, deterministic real-time response, and long-term availability - particularly in factory automation and building management systems.

FAQ

Does STM32F103VEH6 support USB device mode without external PHY?

Yes - it integrates a full-speed USB 2.0 device PHY with internal transceiver. Only a 1.5 kΩ pull-up resistor on PA12 (USB_DP) is required for enumeration; no external PHY or level shifter is needed for standard USB CDC or HID class implementations.

What is the maximum operating temperature range for STM32F103VEH6?

The STM32F103VEH6 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 5.3.1 of DS5792 Rev 13, with thermal derating applied above 70 °C for sustained 72 MHz operation under full peripheral load.

Can the internal temperature sensor be used for system thermal protection?

Yes - the calibrated internal sensor (Section 2.3.28, DS5792) provides ±1.5 °C accuracy from –40 °C to +125 °C junction temperature. It connects to ADC1_IN16 and is commonly used to trigger thermal shutdown via DMA-triggered interrupt before critical threshold is exceeded.

Is STM32F103VEH6 pin-compatible with other STM32F103x variants in LQFP100?

Yes - all STM32F103x devices in LQFP100 (e.g., STM32F103RBT6, STM32F103VBT6) share identical pinout and electrical characteristics per Table 5 (DS5792). Firmware is binary-compatible across same-density variants (C/D/E) when using standard HAL/LL drivers.