The STM32F103VET6 is a high-performance microcontroller with richer resources in the STM32F1 series. Based on the ARM Cortex-M3 core, it is widely used in embedded projects with high resource requirements, thanks to its larger storage capacity and more peripheral interfaces.

1. Core and Clock Speed

Core Architecture: Adopts the ARM Cortex-M3 core, supporting the Thumb-2 instruction set to balance computing efficiency and code compactness.

Maximum Clock Speed: 72MHz, providing 1.25 DMIPS/MHz processing performance, which meets the needs of complex control algorithms and multi-task processing.

Operating Temperature: Industrial-grade standard, covering -40℃ to 85℃, adaptable to harsh scenarios such as industrial environments and outdoor equipment.

2. Memory Configuration

As a model with relatively high storage capacity in the same series, its configuration is as follows:

Flash (Program Memory): 512KB, supporting ISP (In-System Programming) and IAP (In-Application Programming). It can store large-scale programs, firmware or offline data.

RAM (Data Memory): 64KB, providing sufficient space for runtime data caching, intermediate variable storage and multi-task scheduling, suitable for data-intensive applications.

3. Core Peripheral Resources

The richness of peripheral interfaces is significantly enhanced, adapting to more complex function expansion:

GPIO (General-Purpose Input/Output): A total of 80 configurable GPIO pins, supporting push-pull/open-drain output and pull-up/pull-down input. Most pins can be multiplexed for peripheral functions to meet the connection needs of multiple devices.

Communication Interfaces:

UART (Universal Asynchronous Receiver/Transmitter): 5 units, supporting hardware flow control (RTS/CTS), which can connect multiple serial devices (such as sensors, modems, displays) simultaneously.

SPI (Serial Peripheral Interface): 3 units, supporting master/slave modes with a maximum speed of 18MHz, suitable for connecting high-speed peripherals (such as SD cards, wireless modules, AD/DA chips).

I2C (Inter-Integrated Circuit): 2 units, supporting multi-master/slave modes with a speed of up to 400kHz, used for connecting low-speed sensors, EEPROM, etc.

USB 2.0 Full-Speed Interface: 1 unit (Device mode), supporting functions such as USB communication and firmware upgrade.

CAN Controller: 2 units (supporting CAN 2.0A/B standards), suitable for scenarios requiring high-reliability communication such as industrial field buses and automotive electronics.

Timers: A total of 8 timers, including 2 advanced timers (16-bit, supporting PWM complementary output and dead-time control, suitable for motor drive), 4 general-purpose timers (16-bit, supporting input capture and output comparison), and 2 basic timers (16-bit, used for timing or as DAC trigger sources).

ADC/DAC:

12-bit ADC: 1 unit, supporting 16 external analog input channels (including 2 internal channels: temperature sensor and reference voltage) with a maximum sampling rate of 1MHz, which can collect signals from multiple sensors simultaneously.

12-bit DAC: 2 channels, supporting synchronous output, which can be used for waveform generation, analog quantity control, etc.

DMA Controller: 1 12-channel DMA, supporting data transmission between peripherals and memory, and between memory and memory. It reduces CPU load and improves system response speed.

4. Package and Power Supply

Package Type: LQFP100 (Low Profile Quad Flat Package) with a pin pitch of 0.5mm. It provides more I/O pins, suitable for PCB design that requires complex peripheral expansion.

Supply Voltage: Wide voltage range of 2.0V to 3.6V, compatible with power supply methods such as lithium batteries and linear power supplies, adapting to portable and fixed devices.

Power Consumption Modes: Supports three low-power modes (sleep, stop, and standby). The current in standby mode is as low as 2μA, balancing performance and power consumption requirements.

5. Typical Application Scenarios

With large-capacity storage and rich peripherals, this model is suitable for:

Industrial Automation: Multi-axis motor control systems, PLC modules, industrial data gateways.

Smart Devices: High-end smart home controllers, multi-sensor fusion terminals (such as environmental monitoring equipment).

Automotive Electronics: On-board auxiliary control modules, CAN bus node devices.

Communication and IoT: Multi-interface data transponders, edge computing nodes.