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STMicroelectronics STM32F101C6T6ATR
- Part No.:
- STM32F101C6T6ATR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F101C6T6ATR.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,752
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Product details
Overview
STM32F101C6T6ATR from STMicroelectronics is a low-density ARM® Cortex®-M3 32-bit microcontroller with 32 KB Flash, 6 KB SRAM, 36 MHz max CPU frequency, 12-bit ADC (1 µs conversion), and four communication interfaces (1×I²C, 2×USART, 1×SPI) - deployed in industrial sensor nodes, smart metering front-ends, and battery-powered control modules.
For engineers reviewing the STM32F101C6T6ATR datasheet, STM32F101C6T6ATR pinout, STM32F101C6T6ATR application, or STM32F101C6T6ATR equivalent, key selection criteria include Flash/SRAM size, 51-pin I/O count with 5 V tolerance, integrated RTC with VBAT support, and SWD/JTAG debug compatibility for rapid firmware validation in resource-constrained embedded designs.
Technical Context
The device implements an ARM Cortex-M3 core with single-cycle multiplication, hardware division, and nested vectored interrupt controller (NVIC) supporting up to 48 interrupts. Its clock system integrates dual oscillators (4–16 MHz HSE + 32 kHz LSE), PLL for CPU scaling, and factory-trimmed 8 MHz HSI RC source.
DMA supports 7 channels servicing timers, ADC, SPI, I²C, and USART peripherals; low-power operation includes Sleep, Stop, and Standby modes with VBAT-backed RTC and backup registers - enabling sub-µA retention in battery-critical applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 36 MHz max - delivers 1.25 DMIPS/MHz for deterministic real-time control loops. |
| Memory | 32 KB Flash + 6 KB SRAM - sufficient for standalone firmware with protocol stacks and sensor fusion logic. |
| ADC | 12-bit, 1 µs conversion, 16-channel - enables high-resolution analog monitoring of voltage, current, or temperature sensors. |
| Timers | 5 timers: two 16-bit general-purpose (IC/OC/PWM), two watchdogs (independent + window), SysTick - supports motor control timing, safety supervision, and OS tick generation. |
| Communication | 1×I²C (SMBus/PMBus), 2×USART (LIN/IrDA/modem), 1×SPI (18 Mbit/s) - covers wired sensor bus, serial diagnostics, and peripheral expansion. |
| I/O Pins | 37 GPIOs (LQFP48 package), all 5 V-tolerant and mappable to 16 EXTI lines - simplifies interface to legacy 5 V logic and external interrupt-driven event handling. |
| Power Range | 2.0–3.6 V supply - compatible with single-cell Li-ion, 3.3 V LDOs, and industrial 3.3 V rails without level-shifting. |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for compact PCB layouts and moderate power dissipation in industrial control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Core and I/O domain supply pins; decoupling required per datasheet layout guidelines for noise immunity. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 37 total GPIOs; most support alternate functions (USART, SPI, I²C, timer channels) and external interrupts. |
| NRST | Reset input | Active-low reset with internal pull-up; accepts 5 V tolerant signal for system-level reset coordination. |
| BOOT0 | Boot mode selection | Configures boot from system memory (for DFU) or main Flash on power-up - critical for field firmware updates. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port replacing JTAG; enables non-intrusive programming and real-time trace in space-constrained designs. |
| VREF+, VREF- | ADC reference inputs | Enable precise 0–3.6 V ADC conversion range; VREF+ can be tied to VDD or external reference for improved accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded CRC unit | Hardware-accelerated checksum calculation for firmware integrity verification and data packet validation. |
| Temperature sensor | On-die sensor calibrated against VDDA, enabling ambient or die temperature monitoring without external components. |
| 96-bit unique ID | Factory-programmed serial number used for device authentication, secure licensing, or anti-cloning in OEM deployments. |
| Programmable voltage detector (PVD) | Monitors VDD and triggers interrupt or reset below user-defined threshold - prevents erratic behavior during brown-out conditions. |
| ECOPACK® RoHS-compliant packaging | Halogen-free, lead-free LQFP48 meets industrial environmental compliance requirements without performance trade-offs. |
Applications
| Industrial Sensor Node | Smart Energy Meter Front-End |
|---|---|
Use Scenario: Remote environmental monitoring using analog sensors (temperature, humidity, pressure) and wireless telemetry. IC Role / Device Role / Timing Role: Central MCU executing sensor acquisition, preprocessing, and UART-based data framing for LoRaWAN or NB-IoT modems. Use Value: Integrated 12-bit ADC with 1 µs conversion and 5 V-tolerant I/O simplify direct sensor interfacing and reduce BOM cost versus external signal conditioning. | Use Scenario: AC mains measurement, tariff switching, and tamper detection in residential electricity meters. IC Role / Device Role / Timing Role: Real-time acquisition engine managing metrology ADC sampling, RTC-based billing intervals, and secure EEPROM writes via I²C. Use Value: VBAT-backed RTC and backup registers retain time/date and critical logs during power loss - ensuring billing continuity and audit compliance. |
| Battery-Powered Control Module | Automated Test Equipment (ATE) Subsystem |
Use Scenario: Portable calibration tool with push-button UI, LCD, and USB-to-serial bridge for field instrument setup. IC Role / Device Role / Timing Role: Host controller managing button debouncing, LCD refresh, and bidirectional USART communication with host PC. Use Value: Low-power Stop mode (<1.5 µA typical) extends coin-cell battery life beyond 5 years while retaining full register state and RTC operation. | Use Scenario: Signal routing, level translation, and stimulus timing in modular ATE racks with multiple DUT interfaces. IC Role / Device Role / Timing Role: Precision timing coordinator generating synchronized trigger pulses and capturing response windows via timer input capture. Use Value: Two 16-bit timers with independent IC/OC/PWM channels enable sub-microsecond timing resolution for test pattern generation and response analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F030F4P6 | Cortex-M0 core, 16 KB Flash, no VBAT RTC, no temperature sensor | Limited to cost-sensitive, non-battery-retentive applications requiring basic control only | Select when ultra-low BOM cost outweighs need for RTC retention, ADC precision, or Cortex-M3 instruction efficiency. |
| STM32F103C6T6 | Same package and pinout, but 64 KB Flash, 20 KB SRAM, enhanced peripherals (CAN, more timers) | Supports CAN bus integration and larger firmware images - suitable for automotive diagnostics or complex motion control | Choose when future firmware growth, CAN connectivity, or higher RAM headroom is anticipated - maintains hardware compatibility. |
Compared with STM32F030F4P6, this part delivers superior real-time determinism and analog capability; versus STM32F103C6T6, it trades Flash/SRAM capacity for lower unit cost and identical footprint - ideal for fixed-function, production-optimized designs.
Availability
STM32F101C6T6ATR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meter front-ends, and battery-powered control modules requiring stable component supply across multi-year production cycles.
Supply support for STM32F101C6T6ATR 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, specializing in microcontrollers, power management, and sensing technologies for industrial, automotive, and consumer markets.
This part belongs to the STM32F1 "Access Line" product family - designed specifically for cost-sensitive, high-volume embedded applications demanding reliable performance, low power, and broad peripheral integration without premium feature overhead.
FAQ
What is the maximum operating frequency and associated power consumption?
The STM32F101C6T6ATR operates up to 36 MHz with typical active current of 12.5 mA at 3.3 V and 36 MHz (code running from Flash, peripherals enabled). At 8 MHz, consumption drops to ~5.2 mA under identical conditions - enabling dynamic clock scaling to balance performance and battery life.
Does this MCU support hardware debugging, and what interface is used?
Yes - it supports Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins, providing full programming, breakpoint, and real-time variable inspection capabilities. SWD replaces JTAG with a 2-pin interface, reducing PCB routing complexity while maintaining full debug functionality.
Can the ADC measure signals above 3.3 V without external attenuation?
No - the absolute maximum ADC input voltage is VDDA (≤3.6 V), and the conversion range is 0 to VREF+. To measure >3.3 V signals, an external resistor divider or op-amp scaling circuit is required to ensure input stays within the specified 0–3.6 V range and avoids damage or saturation.
Is the LQFP48 package RoHS-compliant and halogen-free?
Yes - the STM32F101C6T6ATR uses ST's ECOPACK® packaging, which is fully RoHS-compliant and halogen-free (IEC 61249-2-21 compliant), meeting strict environmental standards for industrial and consumer electronics without compromising thermal or electrical performance.
STM32F101C6T6ATR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F1
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 36MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT
- Number of I/O:
- 37
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F101C6T6ATR FAQ
1.How can I place an order for STM32F101C6T6ATR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F101C6T6ATR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F101C6T6ATR reliable?
The price and inventory of STM32F101C6T6ATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F101C6T6ATR is usually 5 days.
3.What payment methods are accepted for STM32F101C6T6ATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F101C6T6ATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F101C6T6ATR?
STM32F101C6T6ATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F101C6T6ATR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F101C6T6ATR?
For technical support, including STM32F101C6T6ATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F101C6T6ATR requirements.
6.How does Aetrix verify that STM32F101C6T6ATR is sourced from the original manufacturer or authorized distributors?
All STM32F101C6T6ATR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F101C6T6ATR meets industry standards.
7.What is the process for return or replacement of STM32F101C6T6ATR?
All STM32F101C6T6ATR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F101C6T6ATR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F101C6T6ATR part is unused and in its original packaging.
Return procedure for STM32F101C6T6ATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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