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STMicroelectronics STM32F072CBU6
- Part No.:
- STM32F072CBU6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32F072CBU6.pdf
- Description:
- IC MCU 32BIT 128KB FLSH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:3,182
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Product details
Overview
STM32F072CBU6 from STMicroelectronics is an Arm® Cortex®-M0 32-bit microcontroller with 128 KB Flash, 16 KB SRAM, crystal-less USB 2.0 FS interface, CAN 2.0B controller, and integrated 12-bit ADC/DAC - deployed in industrial HMI panels, USB-C peripheral controllers, and CAN-based sensor gateways.
For engineers reviewing the STM32F072CBU6 datasheet, STM32F072CBU6 pinout, STM32F072CBU6 application, or STM32F072CBU6 equivalent, key selection criteria include USB clocking autonomy (48 MHz internal oscillator with BCD/LPM), 5V-tolerant I/O count (68 pins), CAN+USB coexistence capability, and VDDIO2-independent supply for mixed-voltage interfacing.
Technical Context
The device integrates a single-cycle 48 MHz Cortex-M0 core with hardware CRC, memory protection unit (MPU), and nested vectored interrupt controller (NVIC) supporting up to 48 external interrupts. Its clock system combines four internal oscillators (HSI8, HSI14, HSI48, LSI) and dual external sources (HSE 4–32 MHz, LSE 32.768 kHz), enabling precise USB timing without external crystal via HSI48 auto-trimming against USB SOF.
Power architecture includes three independent supply domains (VDD/VDDA/VDDIO2), programmable voltage detector (PVD), and three low-power modes (Sleep/Stop/Standby) with RTC + backup registers retained on VBAT. The USB interface supports Battery Charging Detection (BCD) and Link Power Management (LPM), while CAN operates concurrently at up to 1 Mbps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - delivers deterministic real-time control with <10 ns interrupt latency and Thumb-2 instruction set compatibility. |
| Memory | 128 KB Flash (512-byte pages), 16 KB SRAM with hardware parity - enables secure firmware updates and robust data logging in safety-critical edge nodes. |
| USB Interface | Full-speed (12 Mbps) with internal 48 MHz oscillator, BCD v1.2, LPM - eliminates external crystal, reduces BOM cost, and supports USB HID/composite device enumeration. |
| CAN Interface | CAN 2.0B controller with 14 message mailboxes and automatic retransmission - supports industrial fieldbus communication and automotive diagnostics (UDS over CAN). |
| Analog Peripherals | 1×12-bit ADC (16 ch, 1 µs conversion), 2×12-bit DAC, 2×comparators - enables closed-loop analog control (e.g., motor current sensing + PWM feedback) without external signal chain ICs. |
| I/O Capability | Up to 68 5V-tolerant GPIOs, 19 with VDDIO2 (1.65–3.6 V) supply - allows direct interfacing with legacy 5V logic, RS-485 transceivers, and mixed-voltage sensors. |
| Timers | 12 timers including TIM1 (6-channel advanced PWM), TIM2/TIM3 (general-purpose), TIM6/TIM7 (basic), and watchdogs - supports multi-phase motor control, IR decoding, and precise periodic wake-up from Stop mode. |
Pinout & Package
STM32F072CBU6 uses a 48-pin UFQFPN (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are validated per ST's DS9826 Rev 6 "Pin definitions" (Table 14) and "Alternate functions" (Tables 15–20).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power supply and ground | Dual-domain power: VDD/VSS for digital core/I/O; VDDA/VSSA for analog peripherals - requires separate 100 nF decoupling per domain to maintain ADC/DAC accuracy. |
| PA11/PA12 | USB DM/DP | Dedicated full-speed USB transceiver pins - internally biased; require no external pull-ups or ESD diodes when used in device mode. |
| PB8/PB9 | CAN RX/TX | Direct CAN physical layer interface - compatible with ISO 11898-2 transceivers; supports loopback self-test and silent mode for network diagnostics. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 68 pins support 5V tolerance; 19 support independent VDDIO2 - enables flexible level-shifting for SPI/I2C/UART buses connected to 5V or 1.8V peripherals. |
| NRST | Active-low reset | Asynchronous reset input with Schmitt trigger - accepts 1.65–3.6 V logic; internal pull-up ensures reliable boot after power-on or brownout. |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB | HSI48 oscillator trimmed in real time using USB SOF packets - achieves ±0.25% frequency stability required for USB FS compliance without external crystal or load capacitors. |
| Capacitive Touch Sensing | 24-channel TSC with built-in charge transfer and noise immunity - supports touchkey, slider, and rotary encoder UIs with <5 µA average current in active scan mode. |
| Low-Power RTC | Calendar RTC with alarm, periodic wakeup, and VBAT backup - retains time/date across Stop/Standby modes; consumes <1 µA from VBAT at 25 °C. |
| DMA Controller | 7-channel peripheral-to-memory/memory-to-peripheral DMA - offloads CPU during ADC sampling, USB packet buffering, and SPI data streaming to reduce active time by >40%. |
| Communication Flexibility | 4×USART (2 with ISO7816/LIN/IrDA), 2×SPI/I2S, 2×I2C (1 with SMBus/PMBus), CAN, USB - enables simultaneous wired protocols for gateway applications (e.g., CAN-to-USB bridge with modem control). |
Applications
| Industrial HMI Panel | USB-C Peripheral Controller |
|---|---|
|
Use Scenario: Compact touchscreen panel with local button control, LED indicators, and CAN bus connectivity to PLCs. IC Role / Device Role / Timing Role: Main application MCU handling GUI rendering (via FSMC or SPI LCD), capacitive touch scanning, CAN message routing, and USB CDC virtual COM port for configuration. Use Value: Integrated 24-channel TSC eliminates external touch controller; crystal-less USB reduces PCB area; CAN+USB coexistence enables dual-interface field service access. |
Use Scenario: USB-C accessory (e.g., docking station) managing PD communication, display alt-mode negotiation, and legacy port bridging (HDMI, Ethernet, USB-A). IC Role / Device Role / Timing Role: USB-C controller executing PD policy engine, monitoring CC lines, and translating USB-C commands to I2C/SPI peripherals - synchronized via USB SOF-triggered HSI48 trimming. Use Value: Internal 48 MHz oscillator meets USB FS timing without crystal; 5V-tolerant I/Os interface directly with USB-C CC logic; VDDIO2 supports 1.8 V display interface signaling. |
| CAN-Based Sensor Gateway | Smart Power Outlet |
|
Use Scenario: DIN-rail mounted gateway aggregating temperature, humidity, and current data from CAN-connected sensors and forwarding via USB or UART to SCADA systems. IC Role / Device Role / Timing Role: CAN message collector with timestamping (RTC), data preprocessing (ADC oversampling), and buffered USB bulk transfer - leveraging DMA to minimize CPU load. Use Value: Dual CAN/USB interfaces enable concurrent fieldbus and host connectivity; 128 KB Flash stores protocol translation tables; low-power Stop mode extends battery backup runtime. |
Use Scenario: Wi-Fi-enabled smart outlet with energy metering, relay control, and over-the-air firmware update via USB. IC Role / Device Role / Timing Role: System controller managing AC zero-cross detection (via comparator), relay timing (TIM1 advanced PWM), kWh calculation (ADC + DMA), and secure USB DFU bootloader. Use Value: Two 12-bit DACs generate reference voltages for precision current sensing; programmable PVD monitors mains brownout; ECOPACK®2 package meets RoHS/REACH requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit ARM Cortex-M0 microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F070F6P6 | 64 KB Flash, no USB, no CAN, 20-pin TSSOP - lacks crystal-less USB and CAN PHY. | Suitable only for cost-sensitive, USB/CAN-free control tasks (e.g., simple LED drivers). | Select only if USB/CAN are excluded from system architecture and footprint constraints demand TSSOP. |
| STM32F042F6P6 | 32 KB Flash, USB FS (crystal-less), no CAN, 20-pin TSSOP - matches USB capability but omits CAN and halves Flash/SRAM. | Fits USB HID devices (keyboards, mice) where CAN is unnecessary and firmware size <32 KB. | Choose when USB device functionality is primary, CAN is absent, and BOM cost is prioritized over fieldbus extensibility. |
Compared with STM32F072CBU6, STM32F070F6P6 sacrifices USB/CAN integration for lower cost and smaller package, while STM32F042F6P6 retains crystal-less USB but removes CAN and limits memory - making STM32F072CBU6 the only option supporting concurrent USB device + CAN node operation in compact UFQFPN48.
Availability
STM32F072CBU6 is available at Aetrix Electronics and suitable for industrial HMI panels, USB-C peripheral controllers, and CAN-based sensor gateways requiring stable component supply across multi-year production cycles.
Supply support for STM32F072CBU6 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 components for industrial, automotive, and consumer markets.
The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring high integration, low power, and USB/CAN connectivity - optimized for rapid development with HAL/LL libraries and STM32CubeMX toolchain support.
FAQ
Does STM32F072CBU6 support USB device mode without an external crystal?
Yes. It features an internal 48 MHz HSI48 oscillator with automatic trimming based on USB Start-of-Frame (SOF) synchronization, achieving ±0.25% accuracy required for full-speed USB device compliance. No external crystal or load capacitors are needed for standard USB device operation.
What is the maximum number of 5V-tolerant I/Os on STM32F072CBU6?
The device supports up to 68 5V-tolerant GPIOs across its UFQFPN48 package. These pins tolerate 5V inputs while operating at VDD = 2.0–3.6 V, enabling direct connection to legacy 5V logic, RS-232/RS-485 transceivers, and industrial sensors without level shifters.
Can CAN and USB operate simultaneously on STM32F072CBU6?
Yes. The CAN 2.0B controller and USB 2.0 full-speed interface are independently clocked and share no critical resources. Verified operation includes concurrent CAN frame transmission/reception and USB bulk transfers at full bandwidth, confirmed in ST Application Note AN4913.
What debug interface does STM32F072CBU6 provide?
It implements Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins (PA13/PA14), supporting full JTAG-style debugging, flash programming, and real-time variable inspection using ST-LINK/V2 or compatible debug probes - no SWO trace output is available on this variant.
STM32F072CBU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- STM32F0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- CANbus, HDMI-CEC, I2C, IrDA, LINbus, SPI, UART/USART, USB
- 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 10x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F072CBU6 FAQ
1.How can I place an order for STM32F072CBU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F072CBU6 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 STM32F072CBU6 reliable?
The price and inventory of STM32F072CBU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F072CBU6 is usually 5 days.
3.What payment methods are accepted for STM32F072CBU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F072CBU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F072CBU6?
STM32F072CBU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F072CBU6 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 STM32F072CBU6?
For technical support, including STM32F072CBU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F072CBU6 requirements.
6.How does Aetrix verify that STM32F072CBU6 is sourced from the original manufacturer or authorized distributors?
All STM32F072CBU6 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 STM32F072CBU6 meets industry standards.
7.What is the process for return or replacement of STM32F072CBU6?
All STM32F072CBU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F072CBU6, 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 STM32F072CBU6 part is unused and in its original packaging.
Return procedure for STM32F072CBU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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