STMicroelectronics STM32F103T6U7A

Overview

STM32F103T6U7A from STMicroelectronics is a low-density performance-line ARM Cortex-M3 microcontroller in UFQFPN48 package, featuring 32 KB Flash, 10 KB SRAM, 72 MHz CPU clock, USB 2.0 full-speed interface, CAN 2.0B controller, and dual 12-bit ADCs. It serves as a main system controller in compact industrial HMI modules requiring real-time motor control, sensor fusion, and fieldbus connectivity.

For engineers reviewing the STM32F103T6U7A datasheet, STM32F103T6U7A pinout, STM32F103T6U7A application, or STM32F103T6U7A equivalent, key selection factors include its 48-pin ultra-thin QFN footprint, integrated USB/CAN dual-protocol support, 1 µs ADC conversion time, and -40°C to +85°C industrial temperature grade.

Technical Context

The device implements an ARM Cortex-M3 core with Harvard architecture, single-cycle multiplication, and hardware divide, executing at 72 MHz with 1.25 DMIPS/MHz efficiency. Its clock system integrates a 4–16 MHz external crystal oscillator, 8 MHz factory-trimmed internal RC, 40 kHz LSI RC, and PLL for precise CPU and peripheral clock derivation.

Peripheral subsystems include seven-channel DMA supporting concurrent transfers across timers, ADCs, SPIs, I²Cs, and USARTs; nested vectored interrupt controller (NVIC) with 64 interrupt vectors; and dual 12-bit ADCs with 16-channel multiplexing, dual-sample-and-hold, and integrated temperature sensor.

Key Specifications

Pinout & Package

UFQFPN48 (7 × 7 mm, 0.5 mm pitch), RoHS-compliant ECOPACK® package with exposed thermal pad for enhanced heat dissipation in space-constrained designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103C6T6, the STM32F103T6U7A offers superior thermal performance and smaller PCB area in UFQFPN48, while STM32F072CBT6 trades CAN/advanced timers for lower cost and higher Flash-making it unsuitable for dual-protocol industrial nodes.

Availability

STM32F103T6U7A is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, USB human interface devices, and automotive diagnostic tools requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32F103T6U7A 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32F1 series targets cost-sensitive, high-reliability embedded applications demanding rich peripheral integration, industrial temperature operation, and robust ecosystem support-including HAL libraries, STM32CubeMX, and community toolchains.

FAQ

What is the maximum operating frequency and associated power consumption in Run mode?

The STM32F103T6U7A operates at up to 72 MHz with typical active current of 36 mA at 3.6 V and 72 MHz (code from Flash, peripherals enabled). This value scales linearly with voltage and clock frequency, and includes all core and peripheral power domains. Measured per Section 5.3.5 of DocID15060 Rev 7 under standard conditions with VDD = 3.3 V and ambient temperature of 25°C.

Does this MCU support USB device enumeration without external components?

Yes. The STM32F103T6U7A integrates a full-speed USB 2.0 PHY with internal pull-up resistors on D+ and supports standard HID, CDC, and MSC class descriptors out-of-the-box. No external transceiver or pull-up resistor is required for basic device enumeration on host PCs or embedded hosts.

How many CAN message objects does the built-in CAN controller support?

The integrated bxCAN controller supports 14 transmit mailboxes and 16 receive FIFOs (with 3-level deep FIFOs), enabling concurrent handling of up to 14 prioritized transmit requests and filtering of incoming frames using 14 32-bit or 28 16-bit acceptance masks. This meets SAE J1939 and CANopen node requirements for medium-complexity networks.

Is the internal temperature sensor calibrated at production, and what is its accuracy?

Yes. The internal temperature sensor is factory-calibrated at 25°C and 110°C, with typical accuracy of ±1.5°C over the full -40°C to +85°C range (±2.5°C maximum). Raw ADC readings require linear interpolation between calibration points using values stored in system memory at 0x1FFFF7AC and 0x1FFFF7C2 per RM0008 reference manual.