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STMicroelectronics STM32F071CBT6
- Part No.:
- STM32F071CBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F071CBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:446
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Product details
Overview
STM32F071CBT6 from STMicroelectronics is a 32-bit Arm® Cortex®-M0 microcontroller with 128 KB Flash, 16 KB SRAM (with hardware parity), and integrated peripherals including dual 12-bit ADC/DAC, 12 timers (including advanced-control TIM1), 4 USARTs, 2 I²C, 2 SPI/I²S, HDMI CEC, and capacitive touch sensing-deployed in industrial HMI, smart sensor nodes, and low-power motor control systems.
For engineers reviewing the STM32F071CBT6 datasheet, STM32F071CBT6 pinout, STM32F071CBT6 application, or STM32F071CBT6 equivalent, key selection criteria include 48 MHz max CPU frequency, 5V-tolerant GPIOs (up to 68 pins), VDDIO2 support for mixed-voltage I/O, 1.0 µs ADC conversion time, and SWD debug interface compatibility.
Technical Context
The STM32F071CBT6 implements an Arm Cortex-M0 core with Harvard architecture, supporting Thumb-2 instruction set and nested vectored interrupt controller (NVIC) with up to 32 interrupts. It integrates a 48 MHz internal HSI48 oscillator with automatic trimming via external synchronization, enabling precise USB clocking without external crystal.
Its peripheral subsystem includes a 7-channel DMA controller with memory-to-memory and peripheral-to-memory transfers, dual independent watchdogs (IWDG/WWDG), calendar RTC with alarm and wake-up from Stop/Standby, and a dedicated touch-sensing controller (TSC) supporting up to 24 capacitive channels for linear/rotary sensors and touchkeys.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - enables real-time deterministic execution for control loops and protocol stacks. |
| Memory | 128 KB Flash + 16 KB SRAM with HW parity - supports firmware updates and robust data logging with error detection. |
| Analog Peripherals | One 12-bit 1.0 µs ADC (16 ch), two 12-bit DAC channels - suitable for closed-loop analog feedback and waveform generation. |
| Digital I/O | Up to 87 fast I/Os; 68 with 5V tolerance, 19 with independent VDDIO2 supply - simplifies interfacing with legacy 5V logic and mixed-voltage subsystems. |
| Timers | 12 timers: 1x 16-bit advanced-control (TIM1), 1x 32-bit, 7x 16-bit general-purpose, plus SysTick, IWDG, WWDG - supports PWM motor drive, IR decoding, and precise timing-critical tasks. |
| Communication | 4 USARTs (2 with ISO7816/LIN/IrDA), 2 I²C (Fast Mode Plus, 1 Mbit/s), 2 SPI/I²S (18 Mbit/s) - enables multi-protocol connectivity in industrial gateways and metering devices. |
| Power Management | VDD = 2.0–3.6 V; low-power modes (Sleep/Stop/Standby); programmable voltage detector (PVD); VBAT backup for RTC - ensures reliable operation across battery- and line-powered applications. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®2, rated for industrial temperature range (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power and ground rails | Digital (VDD/VSS) and analog (VDDA/VSSA) supplies decoupled separately to minimize noise coupling into ADC/DAC paths. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15 | General-purpose I/O ports | Configurable as GPIO, alternate function (AF), or analog input; up to 68 pins 5V-tolerant for direct 5V logic interfacing. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts external push-button or supervisor IC assertion for system-level recovery. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port supporting full SWD protocol - enables non-intrusive programming, real-time tracing, and breakpoint debugging. |
| BOOT0 | Boot mode selection | High at power-on selects system memory bootloader; used for field firmware recovery without debugger. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 48 MHz oscillator (HSI48) | Auto-trimmed via external sync signal - eliminates need for external crystal in USB-capable designs while maintaining ±0.25% accuracy. |
| Capacitive Touch Sensing (TSC) | 24-channel controller with built-in charge transfer and acquisition logic - enables robust touchkey, slider, and rotary encoder implementation without external components. |
| Programmable Voltage Detector (PVD) | Configurable threshold (2.2–2.9 V in steps) with interrupt/wake-up capability - provides early warning of brown-out conditions before system failure. |
| Independent VDDIO2 supply | Supports 19 I/Os at 1.65–3.6 V - allows direct connection to low-voltage peripherals (e.g., 1.8 V sensors or FPGAs) without level shifters. |
| HDMI CEC interface | Dedicated hardware block with header detection and wake-up - enables consumer electronics remote control interoperability in smart home hubs and AV receivers. |
Applications
| Industrial HMI Panel | Smart Energy Meter |
|---|---|
Use Scenario: Compact local operator interface with touch buttons, LED indicators, and RS-485 communication. IC Role / Device Role / Timing Role: Main controller executing GUI rendering, capacitive touch scanning, and Modbus RTU protocol stack. Use Value: Integrated TSC eliminates external touch controller IC; 5V-tolerant GPIOs simplify connection to legacy panel hardware. | Use Scenario: DIN-rail mounted electricity meter with pulse counting, LCD display, and infrared optical port. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC sampling, RTC-based billing intervals, and ISO7816-compatible IR communication. Use Value: Dual 12-bit DAC generates precise calibration reference voltages; VBAT-backed RTC maintains accurate time during mains outage. |
| BLDC Motor Starter | IoT Sensor Node |
Use Scenario: Low-cost 3-phase brushless DC motor starter with hall-effect commutation and overcurrent protection. IC Role / Device Role / Timing Role: Real-time motor control unit generating six-channel complementary PWM with dead-time insertion via TIM1. Use Value: Advanced-control timer supports hardware fault protection (BKIN) and synchronized ADC triggers for current sensing. | Use Scenario: Battery-powered environmental sensor node transmitting temperature/humidity via LoRaWAN gateway. IC Role / Device Role / Timing Role: Ultra-low-power host MCU managing sensor readout, AES encryption, and UART-to-SPI bridge to transceiver. Use Value: Standby mode consumes <1 µA with RTC running; SWD debug retains full visibility during deep sleep entry/exit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F072CBT6 | Includes USB 2.0 FS device interface; identical Flash/SRAM/peripherals otherwise. | Required where native USB device connectivity (e.g., HID, CDC) is needed instead of external USB-UART bridge. | Select when USB device stack integration reduces BOM cost and firmware complexity. |
| STM32F030F4P6 | 20-pin TSSOP, 16 KB Flash, no DAC, no TSC, only 1 USART and 1 I²C. | Suitable for ultra-low-cost, single-function control (e.g., LED driver, fan controller) without analog or touch requirements. | Choose for cost-sensitive volume applications where peripheral count and package size are primary constraints. |
Compared with STM32F072CBT6, this part trades USB for lower EMI sensitivity and reduced layout complexity; versus STM32F030F4P6, it delivers 8× more Flash, dual DAC, TSC, and expanded communication options-justifying its use in feature-rich embedded systems requiring analog integration and human interface.
Availability
STM32F071CBT6 is available at Aetrix Electronics and suitable for industrial HMI, smart energy metering, BLDC motor control, and IoT sensor node designs requiring stable component supply across extended product lifecycles.
Supply support for STM32F071CBT6 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, Switzerland, specializing in microcontrollers, power management, sensors, and automotive ICs.
The STM32F0 series targets cost-sensitive, resource-constrained embedded applications demanding high reliability, low power, and rich analog/mixed-signal integration-optimized for industrial control, appliance, and consumer electronics.
FAQ
What is the maximum operating frequency and supported voltage range?
The STM32F071CBT6 operates at up to 48 MHz using its internal HSI48 oscillator or external crystal. Its digital supply (VDD) ranges from 2.0 V to 3.6 V, analog supply (VDDA) matches VDD up to 3.6 V, and selected I/Os support VDDIO2 from 1.65 V to 3.6 V-enabling flexible power domain partitioning in mixed-voltage systems.
Does this MCU support hardware-based capacitive touch sensing?
Yes, it integrates a dedicated Touch Sensing Controller (TSC) supporting up to 24 capacitive sensing channels. The TSC includes built-in charge transfer, acquisition logic, and shield drivers-enabling robust touchkey, linear slider, and rotary encoder implementations without external components or firmware-intensive polling.
How many communication interfaces are available and what are their key capabilities?
The device provides 4 USARTs (2 with ISO7816/LIN/IrDA), 2 I²C interfaces (Fast Mode Plus, 1 Mbit/s, one with SMBus/PMBus), and 2 SPI/I²S interfaces (18 Mbit/s, 4–16 bit frames). All support DMA, interrupt-driven operation, and wakeup from low-power modes-making them suitable for multi-protocol industrial gateways and sensor aggregators.
What debug interface does the STM32F071CBT6 use and is it compatible with standard tools?
It uses Serial Wire Debug (SWD) with SWDIO and SWCLK pins, fully compliant with ARM CoreSight standards. It is natively supported by ST-LINK/V2-1, J-Link, and OpenOCD, enabling flash programming, real-time variable monitoring, and hardware breakpoints without requiring JTAG pins or additional adapters.
STM32F071CBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- HDMI-CEC, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 37
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 13x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F071CBT6 FAQ
1.How can I place an order for STM32F071CBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F071CBT6 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 STM32F071CBT6 reliable?
The price and inventory of STM32F071CBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F071CBT6 is usually 5 days.
3.What payment methods are accepted for STM32F071CBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F071CBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F071CBT6?
STM32F071CBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F071CBT6 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 STM32F071CBT6?
For technical support, including STM32F071CBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F071CBT6 requirements.
6.How does Aetrix verify that STM32F071CBT6 is sourced from the original manufacturer or authorized distributors?
All STM32F071CBT6 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 STM32F071CBT6 meets industry standards.
7.What is the process for return or replacement of STM32F071CBT6?
All STM32F071CBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F071CBT6, 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 STM32F071CBT6 part is unused and in its original packaging.
Return procedure for STM32F071CBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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