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STMicroelectronics STM32F072CBU7
- Part No.:
- STM32F072CBU7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32F072CBU7.pdf
- Description:
- IC MCU 32BIT 128KB FLSH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:920
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Product details
Overview
STM32F072CBU7 from STMicroelectronics is an Arm® Cortex®-M0 32-bit microcontroller operating at up to 48 MHz, featuring 128 KB Flash, 16 KB SRAM with hardware parity, crystal-less USB 2.0 Full-Speed interface, CAN 2.0B controller, and integrated 12-bit ADC/DAC. It targets embedded control applications requiring robust connectivity, low-power operation, and analog signal processing - such as industrial sensor nodes and USB-connected human interface devices.
For engineers reviewing the STM32F072CBU7 datasheet, STM32F072CBU7 pinout, STM32F072CBU7 application, or STM32F072CBU7 equivalent, key selection criteria include its internal 48 MHz oscillator with USB BCD/LPM support, 5V-tolerant GPIOs (up to 68), dual 12-bit DAC channels, RTC with calendar and alarm, and 24-channel capacitive touch sensing capability.
Technical Context
The STM32F072CBU7 integrates a single-core Arm Cortex-M0 CPU with tightly coupled NVIC, supporting nested interrupts and low-latency event handling. Its clock system combines internal oscillators (HSI48 for USB, LSI for RTC, HSI/HSI14 for system) with external crystal options (4–32 MHz HSE, 32.768 kHz LSE), plus a clock recovery system (CRS) enabling crystal-less USB synchronization.
Peripheral integration includes two I²C interfaces (one with SMBus/PMBus), four USARTs (two with ISO7816, LIN, IrDA), two SPI/I²S modules, one CAN 2.0B controller, and a dedicated advanced-control timer (TIM1) delivering six-channel PWM for motor control. The device supports full SWD debug and 96-bit unique ID.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - enables real-time deterministic control with <10 ns interrupt latency. |
| Memory | 128 KB Flash + 16 KB SRAM w/ HW parity - sufficient for USB stack + application firmware with error detection. |
| USB Interface | Crystal-less USB 2.0 FS with BCD & LPM - eliminates external crystal, reduces BOM cost and PCB area. |
| Analog Peripherals | 1×12-bit ADC (16 ch, 1 µs), 2×12-bit DAC, 2×comparators - supports closed-loop analog control without external converters. |
| Timers | 12 timers including TIM1 (6-ch PWM), TIM2/TIM3 (IC/OC), SysTick, WWDG/IWDG - enables motor control, IR decoding, and precise timing. |
| I/O Capability | Up to 87 fast I/Os; 68 with 5V tolerance - simplifies level-shifting in mixed-voltage systems. |
| Supply Range | VDD = 2.0–3.6 V; VDDA = VDD–3.6 V; VDDIO2 = 1.65–3.6 V - supports flexible power domain partitioning. |
Pinout & Package
STM32F072CBU7 is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per STM32F072x8/xB datasheet Section 5 (Pinouts and pin descriptions), with all pins supporting remappable alternate functions via GPIOx_AFR registers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power supply and ground | Digital/analog domain separation ensures clean ADC/DAC reference and noise immunity. |
| PA11/PA12 | USB DM/DP | Dedicated full-speed USB transceiver pins with internal pull-ups; compatible with crystal-less operation. |
| PA13/PA14 | SWDIO/SWCLK | Two-pin Serial Wire Debug interface - enables non-intrusive programming and real-time tracing. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2 | General-purpose I/O | 87 total I/Os; up to 68 tolerate 5V inputs - allows direct interfacing with legacy 5V logic. |
| PA9/PA10 | USART1_TX/USART1_RX | Hardware UART with auto-baud detection and wakeup - ideal for low-power host communication. |
| PB8/PB9 | CAN_RX/CAN_TX | Dedicated CAN 2.0B physical layer interface - supports industrial fieldbus and automotive diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB 2.0 FS | Internal 48 MHz HSI48 oscillator with CRS trimming - eliminates external crystal and matching components, reducing cost and layout complexity. |
| Capacitive Touch Sensing | 24-channel TSC supporting touchkey, linear, and rotary sensors - enables intuitive HMI without external ICs or firmware overhead. |
| Low-Power Modes | Sleep, Stop, Standby with RTC/VBAT backup - achieves sub-1 µA standby current while retaining calendar time and wake-on-event capability. |
| Programmable Voltage Detector | Configurable PVD threshold (2.0–2.9 V) with interrupt - provides early warning of brown-out conditions before system reset. |
| Hardware CRC Unit | Dedicated CRC-32 engine - accelerates firmware integrity checks and communication packet validation without CPU load. |
Applications
| Industrial Sensor Node | USB Human Interface Device |
|---|---|
Use Scenario: Compact environmental monitoring unit with temperature/humidity sensors, CAN bus reporting, and local USB configuration port. IC Role / Device Role / Timing Role: Central MCU managing sensor acquisition, CAN message framing, USB CDC virtual COM port, and RTC timestamping. Use Value: Integrated 12-bit ADC, CAN PHY, crystal-less USB, and low-power Stop mode enable battery-operated deployment with wired reconfiguration. | Use Scenario: Programmable keyboard or industrial control panel with capacitive touch keys and USB HID interface. IC Role / Device Role / Timing Role: Touch controller + USB HID endpoint with real-time key scan, debouncing, and report generation. Use Value: 24-channel TSC and built-in USB stack eliminate external touch controller and USB transceiver, reducing component count and firmware complexity. |
| Automotive Diagnostic Tool | Smart Power Outlet |
Use Scenario: Handheld OBD-II scanner connecting to vehicle CAN bus and PC via USB. IC Role / Device Role / Timing Role: CAN protocol handler, USB CDC bridge, and LIN/IrDA auxiliary interface for multi-protocol diagnostics. Use Value: Dual CAN/USB connectivity, 4 USARTs with LIN support, and 5V-tolerant I/O simplify interface to both 12V automotive buses and 3.3V PC hosts. | Use Scenario: Wi-Fi-enabled smart outlet with energy metering, relay control, and local USB service port. IC Role / Device Role / Timing Role: System supervisor managing AC zero-cross detection (via comparator), relay timing (TIM1 PWM), and USB-based firmware updates. Use Value: Two 12-bit DACs generate precise reference voltages for analog metering; advanced timer enables accurate phase-angle control of TRIAC dimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F070CBT6 | No CAN, no USB, 128 KB Flash, same Cortex-M0 core and package | Lacks USB and CAN peripherals - suitable only for cost-sensitive, non-connectivity applications | Select when USB/CAN are unnecessary and BOM cost is primary constraint. |
| STM32F072RBT6 | LQFP64 package, identical peripheral set and memory, same 48 MHz performance | Offers 51 GPIOs vs. 41 on UFBGA48; better routing flexibility and thermal dissipation | Prefer for prototyping or designs requiring more I/Os or easier hand-soldering. |
Compared with STM32F072CBU7, the STM32F070CBT6 sacrifices USB and CAN for lower cost, while the STM32F072RBT6 retains full feature parity in a larger, more manufacturable package - making it ideal for development and higher-I/O production variants.
Availability
STM32F072CBU7 is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, automotive diagnostic tools, and smart power outlets requiring stable component supply across long-lifecycle embedded programs.
Supply support for STM32F072CBU7 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 delivers entry-level Cortex-M0 performance with rich analog and connectivity features - designed specifically for cost-sensitive, resource-constrained embedded applications needing USB, CAN, or capacitive touch.
FAQ
Does STM32F072CBU7 support crystal-less USB operation?
Yes. It integrates an internal 48 MHz HSI48 oscillator with Clock Recovery System (CRS) that synchronizes to USB SOF packets, eliminating the need for an external crystal while maintaining full USB 2.0 Full-Speed compliance and BCD/LPM functionality.
What is the maximum number of 5V-tolerant I/Os on STM32F072CBU7?
The STM32F072CBU7 supports up to 68 5V-tolerant I/Os across its GPIO ports. This capability is confirmed in the datasheet Section 3.7 and enables direct interfacing with 5V logic families without external level shifters.
Can the internal DAC outputs drive analog loads directly?
The two 12-bit DAC channels support buffered voltage output with 1 µA typical output current. They can drive high-impedance loads (e.g., op-amp inputs or ADC references) directly but require external amplification for low-impedance or current-driven applications like audio or actuator control.
Is the STM32F072CBU7 pin-compatible with other STM32F072 variants?
No. The STM32F072CBU7 uses a 48-pin UFQFPN package, while other variants (e.g., STM32F072RBT6) use LQFP64 or UFBGA100 packages. Pin mapping differs significantly across packages - migration requires PCB redesign and I/O remapping verification.
STM32F072CBU7 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F072CBU7 FAQ
1.How can I place an order for STM32F072CBU7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F072CBU7 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 STM32F072CBU7 reliable?
The price and inventory of STM32F072CBU7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F072CBU7 is usually 5 days.
3.What payment methods are accepted for STM32F072CBU7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F072CBU7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F072CBU7?
STM32F072CBU7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F072CBU7 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 STM32F072CBU7?
For technical support, including STM32F072CBU7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F072CBU7 requirements.
6.How does Aetrix verify that STM32F072CBU7 is sourced from the original manufacturer or authorized distributors?
All STM32F072CBU7 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 STM32F072CBU7 meets industry standards.
7.What is the process for return or replacement of STM32F072CBU7?
All STM32F072CBU7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F072CBU7, 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 STM32F072CBU7 part is unused and in its original packaging.
Return procedure for STM32F072CBU7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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