STM32F103VBT7 - 72MHz Cortex-M3 128KB MCU | STMicroelectronics
MPN: STM32F103VBT7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.0751 | $6.08 |
| 10 | $6.0751 | $60.75 |
| 100 | $6.0751 | $607.51 |
| 500 | $6.0751 | $3,037.55 |
| 1,000 | $6.0751 | $6,075.10 |
STM32F103VBT7 Overview
A microcontroller is a programmable integrated circuit used as the central control element of an embedded system. This STM32 MCU follows the ARM Cortex-M3 real-time processor architecture and provides general-purpose I/O, serial communication, analog measurement, timing, and control functions. Its 32-bit architecture supports control workloads requiring more arithmetic capability than an 8- or 16-bit microcontroller, while its integrated peripherals reduce the need for separate interface chips.
The STM32F103VBT7 combines a maximum CPU frequency of 72 MHz with 128 KB of programmable Flash. Other verified headline features include USB and CAN connectivity, two analog-to-digital converters, seven 16-bit timers, and nine communication interfaces. These resources make the device suitable for connected industrial controllers, USB peripherals, CAN nodes, data acquisition units, and compact embedded control systems.
The Cortex-M3 core is designed for efficient embedded instruction execution and supports single-cycle multiplication and hardware division according to the retrieved technical summary. A maximum frequency of 1.25 DMIPS/MHz is stated at zero-wait-state memory access in the same summary. Designers must still select suitable clock, reset, boot, and memory-support circuitry according to the complete manufacturer documentation before finalizing an embedded design.
Typical uses include USB-connected data loggers, CAN-based industrial modules, motor and motion controllers, sensor acquisition equipment, instrumentation, and CAN-to-UPS network bridges. The combination of USB, CAN, multiple timers, and dual ADC resources allows several communications and control functions to share one controller. Engineers should prioritize peripheral-pin availability and package routing over processor headline performance when assigning board functions.
A critical design consideration is validating all pin multiplexing, alternate-function assignments, and peripheral dependencies against the manufacturer datasheet. The LQFP package exposes many signals, but simultaneous peripheral use may constrain I/O assignment. Board design should also provide stable power, decoupling, clock routing, a compatible programming interface, and a boot configuration appropriate for the intended firmware.
This page combines verified distributor specifications, source links, application engineering guidance, and candidate compatibility information. It also distinguishes confirmed source data from parameters requiring additional verification, helping engineers move from part identification to design review without treating unverified details as guaranteed specifications.
Drop-in alternatives for STM32F103VBT7 — 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 STM32F103VBT7 (same form factor and footprint) — differing in Flash Memory, Package, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
GD32F103
✅ Drop-In📋 Reference alternative (not in catalog)
STM32F103VBT7 Maximum Ratings & Electrical Characteristics
| Product Type | 32-bit ARM Cortex-M3 microcontroller |
| Series | STM32F1 performance line |
| Maximum CPU Frequency | 72 MHz |
| Core Performance | 1.25 DMIPS/MHz at 0 wait-state memory access |
| Flash Memory | 128 KB (128K x 8) |
| CPU Architecture | ARM 32-bit Cortex-M3 |
| Instruction Width | 32 bit |
| USB Interface | 1 USB interface |
| CAN Interface | 1 CAN interface |
| Timers | Seven 16-bit timers |
| Analog-to-Digital Converters | 2 ADCs |
| Communication Interfaces | 9 communication interfaces |
| Package | 100-LQFP, 14 mm x 14 mm |
| Mounting Type | Surface mount |
STM32F103VBT7 100-lqfp, 14 mm x 14 mm Pin Configuration Guide
Pin configuration for STM32F103VBT7 (100-lqfp, 14 mm x 14 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 STM32F103VBT7.
Refer to the datasheet for full pin configuration.
Typical Applications
STM32F103VBT7 is suitable for 6 applications: USB Data Logger, CAN Industrial Controller, Motor and Motion Control, Industrial Sensor Acquisition, Instrumentation and Test Equipment, Communication Gateway.
USB Data Logger
STM32F103VBT7 fits a USB data logger because it combines a 72 MHz ARM Cortex-M3 core, 128 KB of Flash, a USB interface, two ADCs, seven 16-bit timers, and nine communication interfaces. Firmware can sample analog channels, manage timing, format records, and expose the device as a USB peripheral without requiring a separate interface controller. The main engineering check is assigning the exact USB pins and confirming that board layout, clock configuration, and firmware meet the complete STMicroelectronics electrical requirements. This is a functional fit, not a claim that every USB host or cable arrangement is guaranteed by the supplied excerpt.
Recommended
CAN Industrial Controller
The STM32F103VBT7 is a strong candidate for a CAN-connected industrial controller because verified data identifies CAN, USB, two ADCs, seven 16-bit timers, and nine communication interfaces. The microcontroller can manage sensor conversion, local control timing, CAN message handling, and an optional USB service interface within one device. Designers should verify CAN transceiver requirements, exact peripheral pin assignments, interrupt priorities, and bus timing from the complete datasheet. Its 100-LQFP package also provides a larger pin count than common 48-pin MCU packages, useful when multiple control and communication signals must coexist.
Recommended
Motor and Motion Control
STM32F103VBT7 supports compact motor and motion-control designs that need deterministic timers alongside serial communications. The verified device provides seven 16-bit timers, two ADCs, a 72 MHz Cortex-M3 core, and communication peripherals including CAN and USB. Those resources allow a controller to coordinate PWM-related functions, measure analog feedback, and expose diagnostics over a network. Exact PWM channels, complementary outputs, capture functions, and pin conflicts must be checked before schematic capture. The supplied data does not state motor-control performance limits, so timing and current-loop suitability require board-level validation.
Recommended
Industrial Sensor Acquisition
The two verified ADCs make STM32F103VBT7 relevant to multi-channel sensor acquisition where analog measurement must be coordinated with communications and control. Its 128 KB Flash supports embedded application code, while seven 16-bit timers can organize sampling, debounce, timeout, and actuator intervals. USB can serve as a high-speed service or configuration link, and CAN can distribute measurements within equipment. Engineers must still verify ADC resolution, sampling characteristics, input range, channel count, trigger behavior, and pin multiplexing because those details are not present in the supplied verified snippets.
Recommended
Instrumentation and Test Equipment
STM32F103VBT7 is appropriate for compact instrumentation because it combines control processing, dual ADC resources, USB connectivity, and multiple communication interfaces in one 100-LQFP device. A measurement instrument can use timers for precise sequencing, ADC channels for analog inputs, USB for host connectivity, and serial interfaces for external equipment. The maximum 72 MHz frequency provides headroom for protocol handling and control logic, but actual measurement accuracy is governed by analog conditioning, references, grounding, calibration, and firmware—not by the MCU headline frequency. Validate those system-level factors during prototype testing.
Recommended
Communication Gateway
A USB-to-CAN or multi-protocol gateway is a practical application for STM32F103VBT7 because USB, CAN, and nine communication interfaces are explicitly listed in the verified feature set. The MCU can maintain protocol frames, buffer messages, perform local filtering, and present a configuration interface through USB. Its 128 KB Flash provides a defined code-memory baseline for gateway firmware, while the seven timers support periodic maintenance and timeout functions. Before release, verify exact USART, SPI, and I2C instances, buffer requirements, interrupt latency, and pin multiplexing against the complete manufacturer documentation.
Recommended
Recommended Products Summary
Engineering reference data for STM32F103VBT7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | GD32F103 |
|---|---|---|
| Brand | STMicroelectronics | GigaDevice |
| Package | 100-LQFP (14 mm x 14 mm) | 100-LQFP family footprint; exact orderable MPN not supplied |
| Core | ARM 32-bit Cortex-M3 | ARM Cortex-M3 |
| Maximum Frequency | 72 MHz | 108 MHz |
| Firmware Validation | STMicroelectronics STM32F103 firmware and toolchain | Clock, Flash wait-state, and firmware settings require revalidation |
Key Differentiators
- Established target-device feature set (vs GD32F103)
- Higher reported alternative clock (vs GD32F103)
- Exact orderable target identification (vs GD32F103)
Design Notes
Do not finalize pin assignments from the feature summary alone. The verified 100-LQFP package supports many peripheral signals, but USB, CAN, timers, ADC channels, and communication interfaces may share alternate-function pins. Build a complete pin-budget table from the manufacturer pinout and confirm boot, debug, oscillator, reset, and power pins first. This prevents late schematic changes when two required peripherals compete for the same package terminal.
Preserve the clock and communication topology specified by the complete manufacturer documentation, especially for high-speed USB, CAN, and external serial links. Keep sensitive analog paths away from switching nodes and high-current returns, and provide local decoupling at each supply terminal. The supplied data does not provide trace-impedance or timing values, so do not derive those values from the 72 MHz CPU headline alone; base them on the applicable interface standard and device electrical characteristics.
Do not assume that a GD32F103 candidate is interchangeable merely because it uses Cortex-M3 and an LQFP footprint. The verified alternative data reports 108 MHz for GD32F103 versus 72 MHz for STM32F103VBT7 and specifically calls out clock, Flash wait-state, and firmware checks. Before approving a second source, verify the exact 100-pin orderable MPN, peripheral mapping, electrical limits, startup behavior, toolchain output, and timing under production operating conditions.
Compliance Information
The supplied verified snippets do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations.
