STMicroelectronics STM32F103VGT7TR

Overview

STM32F103VGT7TR from STMicroelectronics is an ARM® Cortex®-M3 32-bit microcontroller operating at up to 72 MHz, featuring 1 MB Flash, 96 KB SRAM, USB 2.0 full-speed interface, CAN 2.0B controller, and three 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 STM32F103VGT7TR datasheet, STM32F103VGT7TR pinout, STM32F103VGT7TR application, or STM32F103VGT7TR equivalent, key selection criteria include Flash size (1 MB), LQFP100 package compatibility, integrated USB/CAN dual-interface capability, and support for 16-bit motor-control timers with dead-time generation.

Technical Context

The STM32F103VGT7TR implements a tightly coupled ARM Cortex-M3 core with Memory Protection Unit (MPU), supporting deterministic interrupt handling via NVIC and flexible memory mapping across Flash, SRAM, and FSMC-controlled external memories. Its clock system integrates dual oscillators (4–16 MHz HSE + 32.768 kHz LSE) plus PLL-based frequency synthesis for precise USB and CAN timing alignment.

Peripheral integration includes a 12-channel DMA controller servicing ADCs, DACs, USARTs, SPIs, I²Cs, and USB; triple 12-bit ADCs with sample-and-hold and temperature sensor; two 12-bit DACs; and ten 16-bit general-purpose timers - enabling synchronized analog acquisition, waveform generation, and multi-axis motion control without external co-processors.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified, rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103ZET6, the STM32F103VGT7TR offers higher Flash density (1 MB vs. 512 KB) in a smaller LQFP100 footprint, while STM32F407VGT6 delivers significantly higher compute throughput and DSP capability at the cost of increased power and BOM complexity.

Availability

STM32F103VGT7TR is available at Aetrix Electronics and suitable for industrial motor drives, smart energy gateways, PLC I/O modules, and medical infusion pump controllers requiring stable component supply across extended product lifecycles.

Supply support for STM32F103VGT7TR 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 STM32F103xG series belongs to ST's mainstream performance-line ARM Cortex-M3 portfolio, engineered specifically for cost-sensitive industrial control, motor drive, and human-machine interface applications demanding rich peripheral integration and long-term supply stability.

FAQ

What is the maximum operating frequency and associated power supply voltage range?

The STM32F103VGT7TR operates at a maximum frequency of 72 MHz within a supply voltage range of 2.0 V to 3.6 V. At 72 MHz with zero wait-state Flash access, it achieves 1.25 DMIPS/MHz performance. The internal voltage regulator supports this full-speed operation across the specified voltage range, and the device includes a programmable voltage detector (PVD) to trigger interrupts or resets during brown-out conditions.

Does this MCU support USB device functionality without external components?

Yes, the STM32F103VGT7TR integrates a full-speed USB 2.0 device interface with an internal transceiver. It requires only passive termination resistors (1.5 kΩ pull-up on D+ and 15 kΩ pull-down on D−) and standard USB connector wiring - no external PHY, level shifter, or oscillator is needed. The USB clock is derived from the internal PLL, eliminating reliance on a separate 48 MHz crystal.

How many independent ADC units does it contain, and what is their shared resource constraint?

The STM32F103VGT7TR contains three independent 12-bit ADCs (ADC1, ADC2, ADC3), each with up to 16 input channels. They share a common clock source and can be synchronized for simultaneous sampling across multiple channels. However, only ADC1 supports the temperature sensor and VREFINT channel; ADC2 and ADC3 are limited to external analog inputs. All three support DMA-driven continuous conversion sequences.

Is the LQFP100 package RoHS-compliant and qualified for industrial temperature operation?

Yes, the STM32F103VGT7TR in LQFP100 packaging is RoHS-compliant and ECOPACK® certified. It is fully qualified for industrial temperature operation from –40°C to +85°C, with validated electrical characteristics across this range per ST's datasheet (DocID16554 Rev 4). Thermal resistance (θ_JA) is specified at 44°C/W for the LQFP100 package, supporting reliable operation in enclosed enclosures without forced airflow.