STMicroelectronics STM32F103TBU6TR

Overview

STM32F103TBU6TR from STMicroelectronics is a medium-density performance-line Arm® Cortex®-M3 microcontroller featuring 128 KB Flash, 20 KB SRAM, 72 MHz CPU frequency, USB 2.0 full-speed interface, and CAN 2.0B Active controller. It integrates dual 12-bit ADCs (1 µs conversion), seven timers including motor-control PWM with dead-time generation, and operates across 2.0–3.6 V supply for industrial sensor node and motor control applications.

For engineers reviewing the STM32F103TBU6TR datasheet, STM32F103TBU6TR pinout, STM32F103TBU6TR application, or STM32F103TBU6TR equivalent, key selection criteria include Flash/SRAM size, USB+CAN co-integration, VFQFPN36 package thermal profile, and 72 MHz real-time deterministic timing capability in embedded control loops.

Technical Context

The device implements an Arm Cortex-M3 core with Harvard architecture, single-cycle multiplication, hardware divide, and nested vectored interrupt controller (NVIC) supporting up to 68 interrupts. Its clock system includes 4–16 MHz HSE crystal oscillator, 8 MHz factory-trimmed HSI RC, 40 kHz LSI RC, and PLL for scalable 72 MHz system clock.

Peripheral integration centers on real-time control: two 12-bit ADCs with dual-sample-and-hold and temperature sensor input; three 16-bit general-purpose timers with quadrature encoder support; one 16-bit advanced-control timer with complementary outputs and emergency stop; plus dedicated CAN 2.0B and USB 2.0 full-speed PHY with internal transceivers.

Key Specifications

Pinout & Package

STM32F103TBU6TR uses the VFQFPN36 (ZR) package: 6 mm × 6 mm body, 0.5 mm lead pitch, exposed thermal pad (EP) on underside for enhanced heat dissipation. Pin count is 36, with 26 GPIOs mappable to 16 external interrupt vectors and 5 V-tolerant inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103C8T6, STM32F103TBU6TR offers 100% more Flash in identical footprint for future-proof firmware; versus STM32F303CBT6, it trades FPU and ADC enhancement for lower cost and proven qualification in automotive-grade designs.

Availability

STM32F103TBU6TR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and automotive diagnostic tools requiring stable component supply across extended product lifecycles.

Supply support for STM32F103TBU6TR 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, and automotive ICs with vertical manufacturing and broad industrial qualification.

This part belongs to the STM32F1 Series - ST's mainstream Arm Cortex-M microcontroller family designed for cost-sensitive, high-reliability embedded control applications demanding rich analog integration and real-time responsiveness.

FAQ

What is the maximum operating temperature range for STM32F103TBU6TR?

The STM32F103TBU6TR is rated for industrial temperature range: –40°C to +85°C ambient. Its VFQFPN36 package achieves junction-to-ambient thermal resistance (R_θJA) of 49.5°C/W under standard JEDEC 2-layer board conditions, enabling continuous operation at full 72 MHz with ≤1.5 W power dissipation.

Does STM32F103TBU6TR support USB device mode without external components?

Yes. The part integrates a full-speed USB 2.0 transceiver with internal pull-up on PA12 and differential termination. Only a single 1.5 kΩ pull-up resistor on D+ (PA12) and standard USB Type-A connector are required - no external PHY or level-shifter needed for CDC or HID class implementations.

How many ADC channels can be sampled simultaneously using DMA?

Up to 16 ADC channels can be sequenced via regular channel group with DMA trigger enabled. Dual ADC mode allows interleaved sampling of up to 8 channels per ADC (16 total) with synchronized start, achieving effective 2 MSPS aggregate throughput while maintaining 12-bit resolution and ±1 LSB INL.

Is the VFQFPN36 package RoHS-compliant and halogen-free?

Yes. STM32F103TBU6TR carries ECOPACK®2 certification: fully RoHS-compliant (2011/65/EU), halogen-free (≤900 ppm bromine, ≤900 ppm chlorine), and compliant with REACH SVHC regulations. The package uses matte tin lead finish and lead-free solder reflow profile (JEDEC J-STD-020D).