Product Overview

STM32F103VET6 is a core model in the STM32F103xE series (high-density performance line) from STMicroelectronics, based on the Arm® Cortex®-M3 32-bit RISC core with a maximum frequency of 72 MHz and a computing performance of 1.25 DMIPS/MHz (Dhrystone 2.1). It integrates 512 KB Flash memory and 64 KB SRAM, adopts an LQFP144 package (20×20mm), and supports USB 2.0 Full-Speed, CAN 2.0B, 11 timers, 3×12-bit ADCs (up to 21 channels), and 13 communication interfaces. With a supply voltage range of 2.0~3.6V, it operates at an ambient temperature of -40~105℃ (junction temperature: -40~125℃), making it suitable for mid-to-high-end embedded scenarios such as industrial control, motor drives, medical devices, and consumer electronics. Fully compatible with other models in the STM32F103 series (hardware and software), it supports FSMC external memory expansion, balancing performance, reliability, and scalability, making it a cost-effective choice for embedded development.

Key Features

• High-Performance Core & Large-Capacity Memory：Powered by a 72 MHz Arm® Cortex®-M3 core that supports single-cycle multiplication and hardware division, delivering 1.25 DMIPS/MHz; built-in 512 KB high-density Flash (erase/write endurance ≥10k cycles, 30-year data retention at 85℃) and 64 KB high-speed SRAM, meeting the needs of complex program storage and multi-task data processing.
• Rich Peripheral Configuration：Integrates 11 timers (including 2 motor-control PWM timers with dead-time generation, 4 general-purpose 16-bit timers), 3×12-bit ADCs (1μs conversion time, up to 21 external channels with triple sample-and-hold), 2×12-bit DACs; 13 communication interfaces cover 5×USART (with LIN/IrDA), 3×SPI (18 Mbit/s, 2 multiplexed with I²S), 2×I²C (SMBus/PMBus), 1×USB 2.0 Full-Speed, 1×CAN 2.0B, 1×SDIO—no additional expansion chips are required to meet multi-scenario communication needs.
• Wide Temperature/Voltage Range & High Reliability：Supply voltage of 2.0~3.6V, compatible with lithium batteries and industrial power supplies; ambient operating temperature of -40~105℃ (suffix 6 version), junction temperature of -40~125℃; produced in ISO 9001-certified factories (e.g., STMicroelectronics Wuxi); supports POR/PDR auto-reset and programmable voltage detector (PVD) to avoid faults caused by power fluctuations.
• Flexible Low-Power Design：Supports three low-power modes: Sleep (CPU only off), Stop (SRAM retained, clocks off), and Standby (minimum power, only RTC active). The typical current in Standby mode is only 1.9μA (VBAT=3.3V, TA=25℃); the VBAT pin independently powers the RTC and backup registers to ensure time and data are not lost during power-off.
• High Compatibility & Scalability：Fully compatible with other STM32F103 series models (e.g., STM32F103RET6, STM32F103ZET6) for seamless hardware/software migration; built-in FSMC (Flexible Static Memory Controller) supports external storage such as Compact Flash, SRAM, NOR/NAND, with a maximum expansion of 512 MB, suitable for industrial devices requiring large-capacity storage.

Technical Specifications

Specification Item	Parameter Details
Product Model	STM32F103VET6
Product Series	STM32F103xE (High-Density Performance Line)
Core Architecture	Arm® Cortex®-M3
Maximum CPU Frequency	72 MHz
Computing Performance	1.25 DMIPS/MHz (Dhrystone 2.1)
Memory Configuration	Flash: 512 KB; SRAM: 64 KB
Package Type	LQFP144 (20×20mm, Low-Profile Quad Flat Package)
Supply Voltage (VDD/VSS)	2.0 ~ 3.6 V
Analog Supply (VDDA/VSSA)	2.0 ~ 3.6 V (≥2.4 V when ADC is used)
Operating Temperature	Ambient (TA): -40 ~ 105℃; Junction (TJ): -40 ~ 125℃
Timer Configuration	2×Advanced Control Timers (TIM1/TIM8, with PWM dead-time), 4×General-Purpose 16-bit Timers (TIM2-TIM5), 2×Basic Timers (TIM6/TIM7), 2×Watchdogs (Independent+Window), 1×24-bit SysTick
ADC Configuration	3×12-bit ADCs, 1μs conversion time, up to 21 channels, supports temperature sensor input
DAC Configuration	2×12-bit DACs, supports noise/triangle wave generation, DMA trigger
Communication Interfaces	5×USART, 3×SPI (2×multiplexed with I²S), 2×I²C, 1×CAN 2.0B, 1×USB 2.0 FS, 1×SDIO
GPIO Count	112 (5V-tolerant, mappable to 16 external interrupts)
Expansion Interface	FSMC (supports 4 chip selects, compatible with NOR/NAND/SRAM)
Certification Standards	EU RoHS (2011/65/EU), ISO 9001 (Manufacturing Factory)
Debug Interface	SWD (Serial Wire Debug), JTAG, supports Embedded Trace Macrocell™
Typical Current (Run Mode)	37 mA (72 MHz, peripherals disabled, TA=85℃, VDD=3.3V)

Typical Applications

• Industrial Control (PLC/Inverters/Sensors)：The multiple communication interfaces (CAN, USART, I²C) of STM32F103VET6 can connect to industrial buses and sensors; 11 timers support precise pulse output and counting; 3 ADCs can synchronously collect multi-channel analog signals (e.g., current, voltage). Its wide-temperature feature adapts to high/low-temperature factory environments, and FSMC-expanded external SRAM can store large amounts of production data, meeting the needs of PLC logic control and inverter motor drives.
• Motor Drives (Servo Motors/Stepper Motors)：2 advanced control timers (TIM1/TIM8) support three-phase PWM output and dead-time generation to avoid power tube shoot-through; the emergency stop function improves motor operation safety. The 72 MHz frequency enables high-frequency current sampling and PID adjustment, suitable for high-precision motor control scenarios such as robots and CNC machine tools—no additional motor driver chips are needed to simplify circuit design.
• Medical Electronics (Heart Rate Monitors/Blood Glucose Analyzers)：Low-power modes (1.9μA in Standby) extend the battery life of portable devices; 3×12-bit ADCs can accurately collect physiological signals (e.g., blood oxygen, blood glucose concentration); 2×DACs support analog signal output. RoHS-compliant materials and high reliability (ISO 9001 certification) meet the environmental and stability requirements of medical devices; the USB interface enables data upload to computers or the cloud.
• Consumer Electronics (Smart Home Controllers/IoT Gateways)：The USB 2.0 Full-Speed interface supports Wi-Fi/Bluetooth modules; 13 communication interfaces can connect to temperature/humidity sensors, relays, touchscreens, etc.; 512 KB Flash can store complex control programs (e.g., voice recognition algorithms); 64 KB SRAM supports multi-task processing (e.g., real-time monitoring and command response), suitable for smart home central control scenarios.
• Automotive Electronics (In-Vehicle Infotainment Systems)：The wide-temperature range (-40~105℃) tolerates in-vehicle high/low-temperature environments; the CAN 2.0B interface adapts to in-vehicle CAN buses; the I²S interface supports audio data transmission (e.g., in-vehicle speakers); the VBAT-powered RTC ensures time is not lost during power-off; the USB interface enables mobile phone connection and data synchronization, meeting the needs of in-vehicle navigation and multimedia playback.

Why Choose STM32F103VET6 ?

• Balanced Performance & Storage for Complex Scenarios：The 72 MHz Cortex-M3 core + 512 KB Flash + 64 KB SRAM meets the real-time computing needs of industrial control and stores complex programs (e.g., RT-Thread/FreeRTOS embedded OS) without additional storage chips, reducing hardware costs.
• One-Stop Peripheral Coverage to Shorten Development Cycles：Integrates USB, CAN, multi-ADCs/DACs, motor-control timers, etc.—no external functional chips (e.g., USB controllers, ADC chips) are required, reducing PCB area; the STM32CubeMX tool enables one-click peripheral configuration, and matching the STM32CubeIDE development environment shortens project development cycles by an average of 30%.
• Wide Temperature/Voltage & High Reliability for Harsh Environments：The 2.0~3.6V wide voltage adapts to different power schemes; the -40~105℃ operating temperature covers industrial, automotive, and other harsh scenarios; Flash erase/write endurance ≥10k cycles, 30-year data retention at 85℃; PVD voltage monitoring avoids device damage caused by abnormal power, suitable for long-running industrial equipment.
• Full-Series Compatibility to Reduce Migration Costs：Pin-to-pin and software compatible with other STM32F103 models (e.g., STM32F103RET6, STM32F103ZET6); if the project needs to expand storage or peripherals later, the model can be replaced directly without redesigning the PCB; a mature supply chain (ST’s global factories) ensures stable mass supply and avoids stock-out risks.
• Mature Ecosystem with Abundant Development Resources：Supports mainstream development tools such as Keil MDK, IAR EWARM, and STM32CubeIDE; the STM32Cube firmware library provides over 1,000 examples (e.g., motor control, USB communication); ST’s official website offers detailed datasheets, reference manuals, and application notes; an active community (e.g., STM32 Chinese Community) ensures quick access to solutions for problems.

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