STMicroelectronics STM32F103VEH7

Overview

STM32F103VEH7 from STMicroelectronics is a high-density performance-line Arm® Cortex®-M3 microcontroller featuring 512 KB Flash, 64 KB SRAM, USB 2.0 full-speed and CAN 2.0B interfaces, and operates at up to 72 MHz. It integrates three 12-bit ADCs (21 channels), two 12-bit DACs, 11 timers including motor-control PWM units with dead-time generation, and supports LCD parallel interface in 8080/6800 modes - deployed in industrial motor control and embedded HMI systems.

For engineers reviewing the STM32F103VEH7 datasheet, STM32F103VEH7 pinout, STM32F103VEH7 application, or STM32F103VEH7 equivalent, key selection criteria include Flash/SRAM capacity, dual high-resolution ADC concurrency, CAN+USB coexistence, LFBGA100 package I/O density (80 GPIOs), and real-time timer features such as quadrature encoder input and emergency stop for motor drives.

Technical Context

The device implements an Arm Cortex-M3 core with Harvard architecture, single-cycle multiplication, hardware divide, and nested vectored interrupt controller (NVIC) supporting 68 interrupt channels. Its memory subsystem includes 512 KB on-chip Flash with error correction, 64 KB SRAM, and a flexible static memory controller (FSMC) supporting NOR, PSRAM, NAND, and CompactFlash.

Clock management integrates four oscillators: 4–16 MHz external crystal (HSE), 32.768 kHz RTC crystal (LSE), 8 MHz factory-trimmed RC (HSI), and 40 kHz RC (LSI), all feeding a PLL capable of generating 72 MHz system clock. Power management supports Sleep, Stop, and Standby modes with VBAT backup for RTC and registers.

Key Specifications

Pinout & Package

LFBGA100 package (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, ECOPACK® certified. Ball grid layout optimized for signal integrity in motor control and industrial HMI applications with dedicated VSS/VDD pairs and noise-suppressed analog domains.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VEH7, STM32F407VGT6 delivers higher computational throughput at the cost of increased power and layout complexity, while STM32F103ZET6 trades USB integration for expanded I/O count - making the VE variant optimal for compact, USB+CAN-enabled edge nodes.

Availability

STM32F103VEH7 is available at Aetrix Electronics and suitable for industrial motor control, embedded HMI, PLC I/O modules, and energy metering gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32F103VEH7 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, sensors, and automotive-grade components since 1987.

The STM32F1 Series targets cost-sensitive, high-reliability industrial and consumer applications requiring rich analog integration, real-time responsiveness, and long-term availability - with the F103xE subgroup optimized for USB+CAN coexistence in space-constrained designs.

FAQ

What is the operating voltage range for STM32F103VEH7?

The STM32F103VEH7 operates from 2.0 V to 3.6 V for both core and I/O supplies. VDDA (analog supply) must be within 2.0 V to 3.6 V and ≥ VDD − 0.3 V to maintain ADC/DAC accuracy. The device includes a programmable voltage detector (PVD) that triggers interrupts or resets when VDD drops below a user-configurable threshold.

Does STM32F103VEH7 support USB device mode without external components?

Yes - it integrates a full-speed USB 2.0 transceiver with internal pull-up resistors and voltage regulators, enabling USB device mode (CDC, HID, MSC classes) directly from PA11 (DP) and PA12 (DM) pins. No external PHY or termination resistors are required, though ESD protection diodes are recommended for robustness.

How many independent ADCs does STM32F103VEH7 have, and can they operate simultaneously?

It contains three independent 12-bit ADCs with 1 µs conversion time. All three can sample concurrently using hardware synchronization triggered by TIM2/TRGO or external event, enabling true simultaneous acquisition across up to 21 channels - essential for three-phase current/voltage monitoring in motor control.

Is the LFBGA100 package of STM32F103VEH7 compatible with standard reflow profiles?

Yes - the LFBGA100 package complies with JEDEC J-STD-020D moisture sensitivity level 3 and supports standard lead-free reflow profiles (peak temperature ≤ 260 °C). Recommended PCB pad layout follows ST's AN2941 guidelines, including solder mask defined pads and thermal relief for VSS/VDD balls to prevent voiding and tombstoning.