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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersSTM32F103R6T7A
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STM32F103R6T7A - STMicroelectronics

Manufacturer Part Number
STM32F103R6T7A
Manufacturer
STMicroelectronics
Allelco Part Number
32D-STM32F103R6T7A
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
7,086 pcs available, New & Original
Parts Description
IC MCU 32BIT 32KB FLASH 64LQFP
Package
64-LQFP (10x10)
Data sheet
STM32F103R6T7A.pdf

PCN Assembly/Origin

STM8/STM32 10/Mar/2020.pdf
RoHs Status
ROHS3 Compliant
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In stock: 7086

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Specifications

STM32F103R6T7A Tech Specifications
STMicroelectronics - STM32F103R6T7A technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - STM32F103R6T7A

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply (Vcc/Vdd) 2V ~ 3.6V
Supplier Device Package 64-LQFP (10x10)
Speed 72MHz
Series STM32F1
RAM Size 10K x 8
Program Memory Type FLASH
Program Memory Size 32KB (32K x 8)
Peripherals DMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT
Package / Case 64-LQFP
Package Tray
Product Attribute Attribute Value
Oscillator Type Internal
Operating Temperature -40°C ~ 105°C (TA)
Number of I/O 51
Mounting Type Surface Mount
EEPROM Size -
Data Converters A/D 16x12b
Core Size 32-Bit Single-Core
Core Processor ARM® Cortex®-M3
Connectivity CANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB
Base Product Number STM32F103

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 3A991A2
HTSUS 8542.31.0001

Parts Introduction

STM32F103R6T7A Image
STM32F103R6T7A (1)

Manufacturer Part Number

STM32F103R6T7A

Manufacturer

STMicroelectronics

Introduction

The STM32F103R6T7A is a 32-bit microcontroller tailored for embedded applications requiring high performance and low-power operation.

Product Features and Performance

ARM Cortex-M3 core with a maximum speed of 72MHz

Comprehensive connectivity: CANbus, I2C, IrDA, LINbus, SPI, UART/USART, USB

Integrated peripherals: DMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT

32KB of FLASH program memory

10KB of RAM

16-channel 12-bit analog-to-digital converter

Internal oscillator for reduced external component count

Product Advantages

Low power consumption suitable for battery-powered devices

Advanced control peripherals for efficient motor control

Robust design with wide operating temperature range

Comprehensive connectivity for varied applications

On-chip debug module for easier development

Key Technical Parameters

Core Size: 32-Bit Single-Core

Number of I/O: 51

Program Memory Size: 32KB

RAM Size: 10KB

Voltage Supply: 2V to 3.6V

Data Converters: A/D 16x12b

Operating Temperature: -40°C to 105°C

Quality and Safety Features

Power and reset management units for reliable operation

Watchdog timer for system recovery

Temperature sensor for thermal protection

Compatibility

Compatible with multiple communication standards

LQFP64 package for standardized PCB layouts

Supports additional external memory interfacing

Application Areas

Industrial control systems

Automotive electronics

Home automation

Complex IoT devices

Product Lifecycle

Active product stage

Not nearing discontinuation

Support for future upgrades available

Several Key Reasons to Choose This Product

High system performance with ARM Cortex-M3 core

Versatile power management ensuring longevity in various environments

Extensive peripheral set enabling a wide range of applications

Active product support guarantees long-term availability

STMicroelectronics' reputation for reliability and innovation

Frequently Asked Questions(FAQ)

What are the key performance trade-offs when selecting the STM32F103R6T7A for a low-power industrial sensor node operating in a 2V to 3.6V supply range?
The STM32F103R6T7A operates efficiently within the 2V to 3.6V voltage range, making it suitable for battery-powered or energy-harvesting applications such as environmental monitoring nodes. However, its maximum clock speed of 72MHz and relatively modest RAM size of 10K x 8 introduce constraints on processing-intensive tasks or large data buffering. When optimizing for power, engineers must balance active-mode throughput against sleep-mode current draw, as the Cortex-M3 core does not feature advanced ultra-low-power modes like those found in newer STM32 families (e.g., L-series). Thus, while the device offers sufficient flash memory (32KB) for embedded firmware, system designers should carefully profile wake-up latency and peripheral usage to avoid exceeding power budgets.
How does the STM32F103R6T7A compare to other STM32F103 variants in terms of memory capacity and pin compatibility?
The STM32F103R6T7A is part of the STM32F103 series and shares the same 64-LQFP (10x10) package as higher-memory variants like the STM32F103RC (with 256KB flash), but it features only 32KB of flash and 10KB of RAM. This makes it less suitable for complex applications requiring extensive code storage or dynamic data handling. However, its pinout is fully compatible with other 64-pin F103 devices, allowing reuse of PCB layouts across product lines during prototyping. Engineers selecting between variants must evaluate whether the reduced memory justifies potential future scalability limitations, especially if firmware updates or additional features may exceed the 32KB limit.
What oscillator configuration options are available with the STM32F103R6T7A, and what are the implications for system stability in automotive environments?
The STM32F103R6T7A includes an internal high-speed RC oscillator running at 8MHz, which can be multiplied by 9 via the PLL to achieve the 72MHz system clock. For precision-critical applications like automotive systems, this internal oscillator may exhibit frequency drift under temperature variations, potentially affecting timing-sensitive peripherals such as USB or CAN. In such cases, an external 8MHz crystal is recommended to maintain stable clocking. While the device supports external oscillators, the lack of built-in calibration logic increases design complexity compared to modern MCUs with factory-trimmed internal oscillators, raising risk assessment concerns for safety-relevant environments.
Can the STM32F103R6T7A reliably support USB communication without an external crystal, and what are the long-term reliability considerations?
The STM32F103R6T7A can function over USB using the internal 8MHz RC oscillator, but USB requires a precise clock frequency (typically 48MHz or 72MHz derived from a stable source). The internal RC oscillator has a tolerance of ±1% to ±2%, which exceeds USB specification requirements for full-speed operation. Therefore, most robust USB implementations rely on an external 8MHz crystal to generate the required 48MHz via the PLL. Over time, crystal aging and temperature-induced drift may further degrade timing accuracy, necessitating software compensation or periodic recalibration—adding firmware overhead and potential failure points in mission-critical deployments.
What are the thermal and electrical constraints when driving multiple GPIOs at high switching rates on the STM32F103R6T7A?
With 51 configurable I/O pins, the STM32F103R6T7A supports versatile interfacing, but simultaneous high-speed toggling of many pins increases dynamic current consumption and generates electromagnetic interference. Each GPIO can source/sink up to 25mA, but total package current is limited by power dissipation characteristics. In continuous high-switching scenarios, cumulative output loading may cause voltage droop or exceed thermal limits, especially near 105°C ambient temperatures. Designers should implement slew rate control, use push-pull outputs sparingly, and consider spreading load across multiple ports to avoid localized heating and signal integrity issues in compact layouts.
How does the STM32F103R6T7A handle brown-out and power-fail detection, and what design precautions are necessary for reliable operation in harsh environments?
The STM32F103R6T7A includes Power-on Reset (POR) and Power-down Reset (PDR), along with Programmable Voltage Detection (PVD) settable between 2.2V and 2.7V or 2.4V and 3.6V. These features help prevent erratic behavior during undervoltage events. However, the PVD thresholds are fixed once configured and cannot be adjusted dynamically. In applications with rapidly fluctuating supplies—such as solar-powered systems—the PVD may trigger false resets if not properly coordinated with capacitor filtering. Additionally, the absence of brown-out reset (BOR) in some sub-variants means transient dips below 2V could corrupt flash memory, underscoring the need for external voltage supervisors in high-reliability designs.
Is the STM32F103R6T7A suitable for motor control applications given its listed peripherals, and what limitations should be considered?
Yes, the STM32F103R6T7A includes motor control PWM timers and DMA support, enabling basic BLDC or stepper motor drives. However, its 72MHz clock limits timer resolution and PWM frequency compared to faster MCUs. For example, generating high-resolution 20kHz PWM signals requires careful prescaler configuration and may reduce available CPU cycles for feedback processing. Moreover, the 32KB flash restricts complex field-oriented control (FOC) algorithms, favoring simpler six-step commutation instead. Engineers targeting industrial motor drives should verify that algorithm footprint fits within 32KB and assess real-time performance under worst-case interrupt loads.
What are the packaging and environmental qualifications of the STM32F103R6T7A for extended-temperature industrial use?
The STM32F103R6T7A is housed in a 64-LQFP (10x10) package and rated for -40°C to +105°C operation, meeting standard industrial temperature requirements. It complies with RoHS3 and has an MSL3 rating (168-hour floor life), indicating moderate moisture sensitivity during assembly. While the device itself is qualified for harsh environments, PCB layout must account for thermal expansion and ensure adequate copper pour around the LQFP leads to manage junction temperatures. Thermal simulation under continuous full-load conditions is advised, as prolonged operation near 105°C may accelerate electromigration despite the MCU’s inherent robustness.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics STM32F103R6T7A

Product Attribute STM32F103R6T6ATR STM32F103R6T6A STM32F103R4H6A STM32F103R6T6
Part Number STM32F103R6T6ATR STM32F103R6T6A STM32F103R4H6A STM32F103R6T6
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Core Size - - - -
RAM Size - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Number of I/O - - - -
Voltage - Supply (Vcc/Vdd) - - - -
Program Memory Size - - - -
Series - - - -
Program Memory Type - - - -
Speed - - - -
Peripherals - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Oscillator Type - - - -
Connectivity - - - -
Data Converters - - - -
EEPROM Size - - - -
Core Processor - - - -

STM32F103R6T7A Datasheet PDF

Download STM32F103R6T7A pdf datasheets and STMicroelectronics documentation for STM32F103R6T7A - STMicroelectronics.

PCN Packaging
Material Barrier Bag 17/Dec/2020.pdf
HTML Datasheet
STM32F103x4, STM32F103x6.pdf
PCN Assembly/Origin
STM8/STM32 10/Mar/2020.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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Delivery Method

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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STM32F103R6T7A Image

STM32F103R6T7A

STMicroelectronics
32D-STM32F103R6T7A

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