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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersSTM32F101C6T6
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STM32F101C6T6 - STMicroelectronics

Manufacturer Part Number
STM32F101C6T6
Manufacturer
STMicroelectronics
Allelco Part Number
32D-STM32F101C6T6
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,640 pcs available, New & Original
Parts Description
IC MCU 32BIT 32KB FLASH 48LQFP
Package
48-LQFP (7x7)
Data sheet
STM32F101C6T6.pdf
RoHs Status
ROHS3 Compliant
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Specifications

STM32F101C6T6 Tech Specifications
STMicroelectronics - STM32F101C6T6 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - STM32F101C6T6

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply (Vcc/Vdd) 2V ~ 3.6V
Supplier Device Package 48-LQFP (7x7)
Speed 36MHz
Series STM32F1
RAM Size 6K x 8
Program Memory Type FLASH
Program Memory Size 32KB (32K x 8)
Peripherals DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT
Package / Case 48-LQFP
Package Tray
Product Attribute Attribute Value
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Number of I/O 37
Mounting Type Surface Mount
EEPROM Size -
Data Converters A/D 10x12b
Core Size 32-Bit Single-Core
Core Processor ARM® Cortex®-M3
Connectivity I²C, IrDA, LINbus, SPI, UART/USART
Base Product Number STM32F101

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

STM32F101C6T6 Image
STM32F101C6T6 (1)

Manufacturer Part Number

STM32F101C6T6

Manufacturer

stmicroelectronics

Introduction

The STM32F101C6T6 is a 32-bit microcontroller featuring an ARM® Cortex®-M3 core designed for multiple embedded applications with low-power and high-performance requirements.

Product Features and Performance

ARM Cortex-M3 core architecture

32-bit single-core processor

Operating speed of 36MHz

Connectivity options include I2C, IrDA, LINbus, SPI, UART/USART

Integrated peripherals like DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT

Internal oscillator

Product Advantages

Efficient execution of instructions with ARM Cortex-M3

Mixed-signal integration enhances system response

Broad range of connectivity options for flexible system design

Advanced control peripherals optimize power management

Key Technical Parameters

Core Size: 32-Bit Single-Core

Speed: 36MHz

Number of I/O: 37

Program Memory Size: 32KB

RAM Size: 6KB

Voltage Supply Range: 2V to 3.6V

Data Converters: A/D 10x12b

Operating Temperature: -40°C to 85°C

Quality and Safety Features

Programmable voltage detector for enhanced safety

Watchdog timer for system reliability

Extended temperature range for harsh environments

Compatibility

Compatible with a range of standard communication protocols

Supported by various development tools and IDEs

Application Areas

Industrial automation

Consumer electronics

Automotive systems

IoT devices

Product Lifecycle

Status: Obsolete

Replacement products are available with upgraded features

Several Key Reasons to Choose This Product

Low power consumption suitable for battery-powered applications

Robust connectivity options enhance peripheral interfacing

Comprehensive feature integration in a compact (48-LQFP) package reducing space requirements

Highly reliable for harsh environmental operation

Continued manufacturer support despite product obsolescence

Frequently Asked Questions(FAQ)

How does the STM32F101C6T6 compare to other STM32F101 series variants in terms of program memory size and pin count, and what design considerations might influence the selection between them?
The STM32F101C6T6 features 32KB of embedded FLASH program memory and offers 48 pins in a 7x7mm LQFP package, providing a balanced trade-off between code capacity and board footprint. Compared to larger memory variants like the STM32F101R8T6 (64KB), it uses fewer transistors for memory cells, reducing active power consumption but limiting firmware complexity. Smaller packages such as the 32-pin LQFP may be used where space is constrained, but they reduce I/O availability. Designers often choose this model when targeting mid-range applications requiring moderate processing with low pin count, such as industrial sensors or battery-powered monitoring devices. The fixed 37 I/O configuration supports typical connectivity needs without over-provisioning, making it suitable for compact designs where both cost and size are optimized.
What are the key limitations of using the STM32F101C6T6 for real-time control applications, particularly regarding interrupt latency and clock speed?
At a maximum operating frequency of 36MHz, the STM32F101C6T6 delivers deterministic interrupt response times typical of Cortex-M3 architectures, with worst-case interrupt latency around 12 cycles under nested conditions. While sufficient for many motor control or sensor fusion tasks, this frequency may not meet requirements for high-speed digital signal processing or tightly synchronized multi-axis motion control. The internal oscillator provides stable timing but lacks precision (±2% accuracy), which can affect PWM resolution or communication protocols like UART baud rate accuracy over temperature. For applications demanding tighter timing margins—such as USB full-speed communication or high-resolution ADC sampling—external crystal oscillators paired with clock multiplication are recommended to maintain reliability.
Can the STM32F101C6T6 support USB 2.0 Full-Speed peripheral functionality, and what hardware modifications would be necessary?
No, the STM32F101C6T6 does not include a dedicated USB hardware block. It lacks the required USB transceiver circuitry and associated PHY layer components integrated on-chip. To enable USB communication, designers must use an external USB-to-serial converter chip or switch to a variant like the STM32F103 series that includes native USB support. Attempting software-based bit-banging approaches introduces significant overhead and unreliability due to timing constraints at 36MHz, especially with limited RAM (only 6KB). Therefore, any project requiring direct USB connectivity should reconsider the microcontroller choice early in the design phase to avoid costly revisions.
How does the voltage range of 2V to 3.6V impact power supply design when integrating the STM32F101C6T6 into a battery-powered system?
Operating across 2.0V to 3.6V allows the STM32F101C6T6 to function from a single lithium cell down to near-depleted states, extending battery life in portable devices. However, at lower voltages, dynamic performance decreases proportionally—maximum CPU frequency remains capped at 36MHz regardless of supply voltage, but execution time increases slightly due to slower transistor switching. Brown-out detection thresholds scale with VDD, enabling automatic safe shutdown during undervoltage events. Power supply noise must remain below 50mVpp to avoid ADC inaccuracies, particularly important given its 10-bit ADCs rated at ±2LSB integral nonlinearity. A low-dropout regulator (LDO) with <100mV dropout is typically preferred over switching regulators to preserve analog performance.
What is the significance of the Moisture Sensitivity Level 3 (MSL 3) rating for the STM32F101C6T6 in manufacturing environments?
MSL 3 indicates that the STM32F101C6T6 can withstand up to 168 hours of exposure to ambient humidity before risking damage during reflow soldering. After this window, moisture trapped in the package may vaporize rapidly under thermal stress, leading to popcorning or delamination. Manufacturers must follow JEDEC J-STD-020 guidelines by baking devices if stored beyond 168 hours, or using sealed dry-packaging with desiccants. This constraint affects supply chain logistics and inventory turnover rates, particularly in high-volume production where lead times exceed storage limits. Failure to comply increases field return rates and compromises product reliability.
How does the internal temperature sensor in the STM32F101C6T6 perform under varying load conditions, and what calibration steps are advisable?
The STM32F101C6T6 includes a built-in temperature sensor accessible via ADC channel, with typical accuracy of ±3°C across -40°C to +85°C. However, self-heating effects occur under heavy CPU loads due to increased leakage current, causing measured values to rise by up to 5°C compared to ambient. The sensor output is linear but requires offset correction based on empirical testing in target enclosures. Calibration involves measuring actual die temperature with an infrared thermometer while running a known workload, then adjusting the software conversion formula accordingly. This step is critical in thermally constrained systems like wearable electronics or enclosed motor drives.
In what scenarios would substituting the STM32F101C6T6 with the STM32F101C6T6A provide tangible benefits despite identical electrical specifications?
The STM32F101C6T6A represents a revised revision of the same part number, potentially offering improved process stability, reduced electromagnetic interference (EMI), or enhanced ESD tolerance. Although datasheets appear identical, later revisions may incorporate layout optimizations or mask fixes that reduce susceptibility to latch-up or soft errors. In safety-critical or high-reliability applications—such as medical devices or automotive peripherals—using the latest revision minimizes unverified risks. Distributors often stock multiple revisions simultaneously; verifying exact part markings and revision codes during procurement ensures access to the most robust variant available.
How should designers evaluate end-of-life (EOL) risks when selecting the STM32F101C6T6 for long-lifecycle products exceeding 10 years?
The STM32F101 family has been discontinued by STMicroelectronics, meaning new production is no longer guaranteed. While existing inventory may suffice for short-term projects, long-term designs face obsolescence risks including dwindling stock, rising unit costs, and lack of technical support. Substitutes like the STM32F101C6T6A offer partial mitigation but do not guarantee continuity. Engineers should assess alternatives with similar pin compatibility, such as the STM32G0 series for future-proofing, or collaborate with suppliers to secure multi-year allocations. Documentation of migration paths and contingency plans is essential to avoid production halts.
What are the implications of using only internal oscillator mode with the STM32F101C6T6 in precision timing applications?
Relying solely on the internal 8MHz RC oscillator (±2% accuracy) limits timing precision for protocols requiring tight clock tolerances, such as LIN bus synchronization or UART communication at high baud rates. Variations in factory trimming and temperature drift introduce cumulative errors over time. For applications needing ±1% accuracy, an external 8MHz crystal with load capacitors and series resistors is strongly advised. Additionally, enabling clock security system (CSS) helps detect oscillator failure but cannot compensate for inherent inaccuracy. Designers must weigh calibration effort against functional requirements when deciding between internal and external clock sources.
How does the DMA capability of the STM32F101C6T6 enhance peripheral data handling compared to polling-based approaches?
With dedicated DMA channels, the STM32F101C6T6 offloads data transfers between peripherals (e.g., ADC to memory) and memory to peripheral (e.g., UART transmit buffer) directly, freeing the CPU for computation. For example, transferring 1024 samples from the 10-bit ADC every millisecond consumes only one CPU cycle per transfer instead of hundreds in polling loops. This reduces jitter in control loops and improves responsiveness in multitasking environments. However, excessive DMA usage can saturate the AHB bus, especially when combined with frequent interrupts. Optimal configuration depends on data rates and memory bandwidth, typically allowing sustained throughput of several MB/s without impacting real-time performance.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics STM32F101C6T6

Product Attribute STM32F101C6T6ATR STM32F101C6T6A STM32F101CBT6 STM32F101C8U6TR
Part Number STM32F101C6T6ATR STM32F101C6T6A STM32F101CBT6 STM32F101C8U6TR
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Speed - - - -
Voltage - Supply (Vcc/Vdd) - - - -
Core Processor - - - -
RAM Size - - - -
Connectivity - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Number of I/O - - - -
Oscillator Type - - - -
Peripherals - - - -
Series - - - -
EEPROM Size - - - -
Data Converters - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Program Memory Size - - - -
Core Size - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Program Memory Type - - - -

STM32F101C6T6 Datasheet PDF

Download STM32F101C6T6 pdf datasheets and STMicroelectronics documentation for STM32F101C6T6 - STMicroelectronics.

HTML Datasheet
STM32F101x(4,6) Datasheet.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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Brazil 7
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DHL & FedEx Shipment Charges Reference
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1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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STM32F101C6T6 Image

STM32F101C6T6

STMicroelectronics
32D-STM32F101C6T6

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