STMicroelectronics STM32F103VET7TR

Overview

STM32F103VET7TR 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 21 channels-used in industrial motor control systems requiring real-time PWM generation, analog sensing, and fieldbus communication.

For engineers reviewing the STM32F103VET7TR datasheet, STM32F103VET7TR pinout, STM32F103VET7TR application, or STM32F103VET7TR equivalent, key selection criteria include 72 MHz CPU frequency, 112 I/O count with 5 V tolerance, triple ADC sampling capability, and integrated FSMC for external memory expansion in embedded HMI and PLC designs.

Technical Context

The device implements a tightly coupled Arm Cortex-M3 core with Harvard architecture, single-cycle multiplication, hardware divide, and NVIC supporting up to 84 maskable interrupts. Its clock system integrates dual PLL paths-one for CPU (up to 72 MHz) and one dedicated to USB (48 MHz)-with four oscillator sources: 4–16 MHz HSE, 8 MHz HSI, 40 kHz LSI, and 32.768 kHz LSE.

Peripheral interconnect uses AHB/APB bus matrix with DMA-driven data movement across 12-channel controller supporting concurrent transfers to timers, ADCs, DACs, USARTs, SPIs, and USB. The FSMC provides configurable timing for NOR/PSRAM/NAND/CF memory with up to four chip selects and 8080/6800 LCD interface mode.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VET7TR, the ZET6 offers pin-compatible upward I/O scalability within the same family, while the F407VGT6 delivers architectural uplift for compute-intensive tasks but requires PCB redesign and toolchain migration.

Availability

STM32F103VET7TR is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, HMI touch panels, and energy metering gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32F103VET7TR 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, sensors, and automotive ICs.

This part belongs to the STM32F1 Performance Line, designed specifically for cost-sensitive industrial automation and real-time control applications demanding robust analog integration, fieldbus connectivity, and long-term supply assurance.

FAQ

What is the maximum operating temperature range for STM32F103VET7TR?

The STM32F103VET7TR is rated for industrial temperature range: –40°C to +85°C ambient. This is confirmed in Section 5.3.1 of DS5792 Rev 13, where electrical characteristics and thermal derating curves are specified across this full range. The device uses standard LQFP100 packaging with JEDEC J-STD-020 moisture sensitivity level 3.

Does STM32F103VET7TR support USB device enumeration without external components?

Yes - it integrates a full-speed USB 2.0 transceiver with internal pull-up resistors on PA12 (D+). When configured in device mode, only a single 1.5 kΩ pull-up resistor on D+ (enabled internally via USB_CNTR register) and proper VBUS detection circuitry are required. No external PHY or termination resistors are needed per Section 2.3.24 and Table 58 of the datasheet.

How many independent PWM outputs can be generated simultaneously?

Up to 24 independent PWM outputs are possible: four 16-bit general-purpose timers provide up to 4 channels each (16 total), and two advanced motor-control timers add 4 complementary channels each (8 total), all with configurable polarity, dead-time, and synchronization. This is detailed in Table 4 and Section 2.3.17 of DS5792 Rev 13.

Is the internal RC oscillator factory-trimmed for accuracy?

Yes - the 8 MHz internal HSI oscillator is factory-trimmed to ±1% accuracy at 25°C and retains ±2% over the full temperature range (–40°C to +85°C), as specified in Table 25. It supports automatic calibration against the HSE or LSE reference via the RCC_HSICALIBR register, enabling drift compensation in time-critical bootloader or clock-failover scenarios.