STM32F103TBU7 - 72MHz Cortex-M3 128KB MCU | STMicroelectronics
MPN: STM32F103TBU7 ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
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| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
STM32F103TBU7 Overview
A microcontroller is a semiconductor device that combines a processor core, memory, and peripherals into one embedded-computing component. In the system hierarchy, this device is an MCU, an embedded processor, and ultimately an integrated circuit. The STM32F103TBU7 uses an ARM Cortex-M3 core capable of 1.25 DMIPS per MHz at zero-wait-state memory access, providing a practical balance of processing performance, memory capacity, and peripheral integration.
Key features include a 32-bit ARM Cortex-M3 processor, 72 MHz maximum frequency, 128 KB Flash memory, hardware USB and CAN support, seven timers, two ADCs, and nine communication interfaces. Its 128 KB Flash supports stored firmware and application code, while the communication peripherals enable connected embedded systems without requiring separate interface controllers. The 36-VFQFPN package also exposes an exposed pad according to the provided product result, supporting compact surface-mount designs.
The STM32F103 family is positioned for medium-density embedded applications where USB, CAN, timing, analog conversion, and serial communications are useful. The MCU is suitable for industrial modules, vehicle gateway nodes, CAN or LIN control networks, motor-control equipment, instrumentation, and communication boards. Its 72 MHz operating limit should be considered alongside clock configuration, peripheral timing, memory wait states, and thermal requirements.
For PCB design, use the manufacturer datasheet and package drawing for the exact exposed-pad connection, pin numbering, and recommended land pattern. The verified web results identify the package as 36-VFQFPN (6 x 6 mm), but the complete public pin assignment and electrical limits must be confirmed from the manufacturer datasheet before layout or firmware release.
This page consolidates the verified distributor and manufacturer-linked product information, practical application guidance, and a conservative drop-in replacement assessment. The provided search data confirms the core identity and package, while missing detailed electrical, pin-level, price, and lifecycle parameters are marked for data completion rather than guessed.
Drop-in alternatives for STM32F103TBU7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with STM32F103TBU7 (same form factor and footprint) — differing in Communication Interfaces, Core, Package, Flash Memory, Maximum Clock Frequency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STM32F103TBU6
✅ Drop-In📋 Reference alternative (not in catalog)
STM32F103T8U6
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →GD32F103
✅ Drop-In📋 Reference alternative (not in catalog)
AT32F403ARGT7
✅ Drop-In✓ In Stock
$0.9 / Unit
View Datasheet →STM32F103TBU7 Maximum Ratings & Electrical Characteristics
| Product Type | ARM Cortex-M3 32-bit microcontroller |
| Series | STM32F1 medium-density performance line |
| Maximum CPU Frequency | 72 MHz |
| CPU Performance | 1.25 DMIPS per MHz at 0 wait state |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 bits |
| Supply Voltage | 3.3 V |
| USB Support | USB peripheral |
| CAN Support | CAN interface |
| Timer Count | 7 timers |
| ADC Count | 2 ADCs |
| Communication Interfaces | 9 communication interfaces |
| Package | 36-VFQFPN (6 x 6 mm) |
| Mounting Type | Surface mount |
| Core | ARM Cortex-M3 |
STM32F103TBU7 36-vfqfpn (6 x 6 mm) Pin Configuration Guide
Pin configuration for STM32F103TBU7 (36-vfqfpn (6 x 6 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for STM32F103TBU7.
Refer to the datasheet for full pin configuration.
Typical Applications
STM32F103TBU7 is suitable for 7 applications: Vehicle Gateway Nodes, CAN and LIN Control Networks, Industrial Communication Modules, Motor Control Equipment, USB-Connected Embedded Controllers, Instrumentation and Data Acquisition, Low-Cost Embedded Control Boards.
Vehicle Gateway Nodes
The STM32F103TBU7 fits vehicle gateway nodes because the verified feature set combines a 72 MHz ARM Cortex-M3 core, 128 KB Flash, CAN, USB, timers, and multiple communication interfaces. A gateway can use the MCU to supervise network messages, coordinate diagnostic functions, and mediate between vehicle electronics. The MCU itself does not provide the CAN transceiver; the board still needs a suitable transceiver, protection network, termination, and power conditioning. Before release, validate timing margins, automotive temperature requirements, transient immunity, and firmware behavior against the complete STMicroelectronics electrical specifications.
Recommended
CAN and LIN Control Networks
The verified CAN capability makes STM32F103TBU7 relevant to CAN and LIN control networks, especially compact embedded controllers that also need USB connectivity. Its 72 MHz core provides timing headroom for protocol handling and supervisory tasks, while seven timers and nine communication interfaces support multiple peripheral functions. LIN operation requires the appropriate physical-layer transceiver and stack implementation. Firmware should be tested for arbitration, error recovery, timing, bus shutdown, and recovery behavior rather than assuming compatibility solely from the MCU feature list.
Recommended
Industrial Communication Modules
STM32F103TBU7 can serve as the central MCU in industrial communication modules that need local control plus USB or CAN connectivity. The 128 KB Flash capacity provides room for application firmware, protocol handlers, and configuration storage, while the 32-bit Cortex-M3 core supports responsive state-machine and data-processing tasks. Industrial deployment requires attention to supply regulation, grounding, ESD protection, enclosure temperature, and long-term component availability. Verify the complete peripheral pin mux and electrical limits before selecting the MCU for a new module.
Recommended
Motor Control Equipment
The STM32F103TBU7 is a candidate for compact motor-control and actuator-control equipment because it combines a 72 MHz processor with seven timers and two ADCs. Timers can generate precise control timing, while ADC channels can monitor command or feedback signals when configured for the intended analog inputs. The MCU does not directly drive motors; power-stage devices, gate drivers, current sensing, protection circuitry, and an appropriate control-loop design are required. Validate timer clock relationships, ADC noise, PWM resolution, dead time, fault handling, and thermal performance in the final system.
Recommended
USB-Connected Embedded Controllers
USB support makes the STM32F103TBU7 useful for USB-connected embedded controllers, configuration tools, and service interfaces. The 128 KB Flash and 72 MHz Cortex-M3 performance provide a workable platform for USB protocol handling, local state management, and peripheral control. The design must include the proper USB electrical connection, power supervision, signal integrity, and firmware stack. The verified data does not specify USB speed or endpoint configuration, so those details must be confirmed from the official datasheet and reference documentation before implementation.
Recommended
Instrumentation and Data Acquisition
The STM32F103TBU7 can be used for compact instrumentation and data-acquisition controllers where a 72 MHz ARM core, two ADCs, timers, and communication interfaces are useful. The ADC channels can collect analog measurements, while serial or USB links transfer data to a host or control system. Input conditioning, reference selection, sampling timing, calibration, and isolation must be designed separately. The supplied data does not specify ADC resolution or sampling rate, so do not assume those values; retrieve them from the manufacturer datasheet before selecting signal-chain components.
Recommended
Low-Cost Embedded Control Boards
The STM32F103TBU7 is suitable for low-cost embedded control boards that need more processing capability than a simple 8-bit MCU while retaining a broad set of communication peripherals. Its 128 KB Flash supports embedded application code, and the 72 MHz Cortex-M3 core handles control logic, communications, and timing tasks. The 36-VFQFPN 6 x 6 mm package supports compact designs, but exposed-pad layout, thermal copper, assembly tolerances, and signal routing require the official package drawing. Use a conservative bring-up process and confirm the exact pin names before fabrication.
Recommended
Recommended Products Summary
Engineering reference data for STM32F103TBU7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F103TBU6 | STM32F103T8U6 | GD32F103 | AT32F403A |
|---|---|---|---|---|---|
| Package | 36-VFQFPN (6 x 6 mm) | 36-VFQFPN (6 x 6 mm) - verified comparison result | Package not fully confirmed in supplied data | Package must be confirmed against selected suffix | Package must be confirmed against selected suffix |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice | Artery |
| CPU Core | ARM Cortex-M3 | ARM Cortex-M3 family | ARM Cortex-M3 family | Cortex-M3-compatible family candidate | Cortex-M4F |
| Maximum Frequency | 72 MHz | 72 MHz class | 72 MHz class | Up to 108 MHz cited in migration material | 240 MHz cited in comparison material |
Key Differentiators
- 72 MHz ARM Cortex-M3 performance target (vs GD32F103)
- Direct STM32F103 family continuity (vs AT32F403A)
- 72 MHz verified family comparison (vs STM32F103TBU6)
Design Notes
Use the official 36-VFQFPN 6 x 6 mm package drawing for the land pattern, pin-1 orientation, and exposed-pad connection. The verified product data identifies the package but does not provide the complete 36-pin map, so do not finalize routing from distributor search text alone. Keep the MCU footprint on a stable ground reference, follow the manufacturer’s exposed-pad recommendation, and inspect the assembly drawing for thermal-via requirements.
The verified result identifies a 3.3 V supply for STM32F103TBU7, but the complete operating-voltage range and current limits are not included in the supplied data. Confirm the exact VDD range, I/O limits, startup requirements, and decoupling recommendations from the STMicroelectronics datasheet. Place required bulk and high-frequency decoupling close to the device according to the official reference design, and validate the regulator’s transient response during USB or CAN activity.
The exposed pad and 6 x 6 mm package require deliberate thermal design, but the supplied data does not provide junction temperature, thermal resistance, or maximum dissipation values. Estimate total dissipation from the actual clock, I/O load, and supply conditions, then compare it with the manufacturer’s thermal limits. Use adequate copper and, where necessary, thermal vias or a heat-spreader treatment without compromising signal integrity.
Do not substitute STM32F103TBU6, STM32F103T8U6, GD32F103, or AT32F403A solely because the family names or core classes appear similar. Check exact package pinout, suffix, flash and SRAM capacity, voltage limits, peripheral mapping, clock behavior, startup code, and qualification. The supplied cross-reference results describe migration candidates but do not establish complete production drop-in equivalence for this exact MPN.
Compliance Information
The supplied web results do not provide verified RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for STM32F103TBU7.
