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STMicroelectronics STM32C071KBT6N
- Part No.:
- STM32C071KBT6N
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
STM32C071KBT6N.pdf
- Description:
- MAINSTREAM ARM CORTEX-M0+ MCU WI
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Inventory:100
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Product details
Overview
STM32C071KBT6N from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller with 128 KB flash, 24 KB SRAM, USB Full-Speed device interface (crystal-less), dual USARTs supporting LIN/IrDA/ISO7816, and 12-bit ADC with 19 external channels - deployed in industrial sensor nodes requiring low-power operation and embedded USB connectivity.
For engineers reviewing the STM32C071KBT6N datasheet, STM32C071KBT6N pinout, STM32C071KBT6N application, or STM32C071KBT6N equivalent, key selection criteria include USB FS crystal-less capability, 5 V-tolerant I/Os across all 48 pins, -40°C to 125°C extended temperature grade, and integrated 48 MHz RC oscillator with ±1% accuracy for timing-critical firmware execution without external crystal.
Technical Context
This MCU integrates an Arm Cortex-M0+ core with Memory Protection Unit (MPU), enabling secure partitioning of code and data regions in real-time embedded applications. It supports boot from system memory, main flash, or SRAM, with configurable readout protection (RDP) levels and securable flash area for IP protection.
The peripheral interconnect uses a multi-layer AHB/APB matrix, allowing concurrent DMA transfers and CPU access without bus contention. Clock tree includes dual oscillators (HSE up to 48 MHz and LSE at 32.768 kHz), plus three RC sources (HSI48, HSIUSB48, LSI) with calibration and clock recovery - critical for USB synchronization and RTC accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ @ up to 48 MHz - delivers deterministic real-time response with 1.25 DMIPS/MHz efficiency for compact firmware in space-constrained designs. |
| Flash / RAM | 128 KB flash with securable area + 24 KB SRAM with hardware parity - enables robust firmware storage and error-detecting data buffers for safety-critical tasks. |
| USB Interface | USB 2.0 Full-Speed device (crystal-less) - eliminates external 48 MHz crystal, reducing BOM cost and PCB footprint while maintaining USB compliance. |
| ADC | 12-bit, 0.4 µs conversion time, up to 19 external channels - supports high-speed analog monitoring (e.g., current sensing, battery voltage) with minimal latency. |
| I/O Voltage Tolerance | All 48 GPIOs 5 V-tolerant - simplifies level-shifting in mixed-voltage systems interfacing with legacy 5 V peripherals or sensors. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive modules, industrial motor drives, and outdoor metering equipment. |
| Low-Power Modes | Sleep, Stop, Standby, Shutdown - achieves 100 nA shutdown current, enabling multi-year battery life in wireless sensor endpoints. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin count and layout optimized for balanced signal routing and thermal dissipation in compact industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / ground | Dual power domains: VDD (2.0–3.6 V) for core/peripherals; separate VDDIO (1.65–3.6 V) allows flexible I/O voltage scaling. |
| PA0–PA15, PB0–PB15, PC13–PC15, PD2 | General-purpose I/O | 48 total GPIOs, all mappable to EXTI lines and 5 V-tolerant - supports direct connection to switches, LEDs, and 5 V logic without level shifters. |
| PA9/PA10 | USART1 TX/RX | Hardware UART with LIN break detection and auto baud rate - enables robust communication with automotive ECUs and industrial fieldbus nodes. |
| PA11/PA12 | USB_DM/USB_DP | Dedicated crystal-less USB FS interface - integrates internal transceiver and timing recovery, eliminating external oscillator and matching components. |
| PC13 | RTC oscillator input | Connects to 32.768 kHz crystal for calendar RTC with alarm - provides accurate timekeeping for data logging and scheduled wake-up events. |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB FS | Eliminates external 48 MHz crystal and associated capacitors - reduces component count by ≥3 parts and saves ≥4 mm² PCB area. |
| 48 MHz HSI48 oscillator | ±1% initial accuracy with factory calibration - ensures reliable USB packet timing and system clock stability without trimming circuitry. |
| 96-bit unique ID | Factory-programmed serial number - enables secure device authentication, firmware licensing, and traceability in production and field deployment. |
| Programmable BOR | 4 selectable thresholds (1.6–2.5 V) - prevents erratic operation during brownout conditions in battery-powered or unstable supply environments. |
| Advanced-control timer (TIM1) | 16-bit with complementary outputs, dead-time insertion, and fault protection - supports brushless DC motor control without external gate drivers. |
Applications
| Industrial Sensor Node | Smart Meter Interface Module |
|---|---|
|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and CO₂ data with periodic USB-based firmware updates. IC Role / Device Role / Timing Role: Main controller executing sensor fusion algorithms, managing USB reprogramming, and scheduling low-power wake-ups via RTC alarm. Use Value: Crystal-less USB and 100 nA shutdown current extend battery life beyond 5 years while enabling field-upgradable firmware without opening enclosures. |
Use Scenario: DIN-rail mounted electricity meter add-on board providing optical port communication and tamper detection. IC Role / Device Role / Timing Role: Isolated interface processor handling IrDA optical pulses, reading tamper switch inputs, and timestamping events via calendar RTC. Use Value: 5 V-tolerant GPIOs directly interface with legacy optical couplers; LIN-capable USART connects to meter's internal bus without level translation. |
| Automotive Body Control Unit | Programmable Logic Controller I/O Expander |
|
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with LIN network integration. IC Role / Device Role / Timing Role: LIN slave node with ISO7816-compatible USART for diagnostic access and advanced timer for PWM-driven motor control. Use Value: TIM1's dead-time insertion and fault input prevent shoot-through in H-bridge drivers; -40°C to +125°C rating ensures reliability in engine bay proximity. |
Use Scenario: DIN-rail PLC expansion module adding 16 isolated digital inputs and 8 relay outputs controlled via Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol bridge translating Modbus commands into GPIO state changes, with SPI-driven isolation ICs and watchdog supervision. Use Value: Dual SPI interfaces (24 Mbit/s) drive isolated digital I/O expanders; programmable brownout reset prevents spurious relay actuation during line dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32C031K6T6 | 64 KB flash, no USB FS, no crystal-less mode, same LQFP48 package | Lacks USB reprogramming and crystal-less convenience; suitable only for non-USB field update scenarios | Select when USB is unnecessary and cost reduction is prioritized over future firmware flexibility. |
| STM32G071KBT6 | Same pinout, 128 KB flash, but Cortex-M0 core (not M0+), no securable flash area, higher active current | Lower security assurance and reduced power efficiency in Stop mode (1.1 µA vs. 0.34 µA) | Choose only if existing G0 software stack reuse outweighs C0's enhanced security and ultra-low-power advantages. |
Compared with STM32C031K6T6 and STM32G071KBT6, the STM32C071KBT6N uniquely combines crystal-less USB FS, securable flash, and sub-1 µA Stop mode current - making it optimal for secure, field-upgradable, battery-sensitive edge devices where both connectivity and longevity are mandatory.
Availability
STM32C071KBT6N is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interface modules, automotive body control units, and programmable logic controller I/O expanders requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for STM32C071KBT6N 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer markets.
The STM32C0 series targets cost-sensitive, resource-constrained embedded applications demanding USB connectivity, extended temperature operation, and robust security - bridging the gap between legacy 8-bit MCUs and higher-end Cortex-M3/M4 solutions.
FAQ
Does STM32C071KBT6N support USB device enumeration without an external crystal?
Yes. The part integrates a factory-calibrated 48 MHz HSI48 oscillator with clock recovery system, enabling full USB 2.0 Full-Speed device enumeration and data transfer without any external crystal or oscillator components - confirmed in DS14693 Rev 2 Section 3.20 and Table 41.
What is the maximum operating temperature grade for this specific part number?
The STM32C071KBT6N is rated for -40°C to +125°C ambient operation, as specified in Table 24 (General Operating Conditions) and Table 24 footnote referencing "Industrial and Automotive" temperature range in DS14693 Rev 2.
How many 5 V-tolerant I/O pins does STM32C071KBT6N have?
All 48 GPIOs on the LQFP48 package are 5 V-tolerant, including PA0–PA15, PB0–PB15, PC13–PC15, and PD2 - verified in Section 3.10 (GPIOs) and Table 51 (I/O static characteristics) of the datasheet.
Is there hardware support for secure firmware updates via USB?
Yes. The MCU includes a securable flash area, readout protection (RDP) levels, and 96-bit unique ID - enabling cryptographic signature verification of USB-received firmware images before execution, as described in Sections 3.3.1 and 3.21.1 of DS14693 Rev 2.
STM32C071KBT6N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
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- Grade:
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- Qualification:
- -
- Mounting Type:
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- Supplier Device Package:
STM32C071KBT6N FAQ
1.How can I place an order for STM32C071KBT6N through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32C071KBT6N 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 STM32C071KBT6N reliable?
The price and inventory of STM32C071KBT6N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32C071KBT6N is usually 5 days.
3.What payment methods are accepted for STM32C071KBT6N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32C071KBT6N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32C071KBT6N?
STM32C071KBT6N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32C071KBT6N 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 STM32C071KBT6N?
For technical support, including STM32C071KBT6N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32C071KBT6N requirements.
6.How does Aetrix verify that STM32C071KBT6N is sourced from the original manufacturer or authorized distributors?
All STM32C071KBT6N 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 STM32C071KBT6N meets industry standards.
7.What is the process for return or replacement of STM32C071KBT6N?
All STM32C071KBT6N units undergo pre-shipment inspection (PSI). If there is an issue with STM32C071KBT6N, 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 STM32C071KBT6N part is unused and in its original packaging.
Return procedure for STM32C071KBT6N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32C071KBT6N Tags
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