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STMicroelectronics STM32F072CBU7TR
- Part No.:
- STM32F072CBU7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32F072CBU7TR.pdf
- Description:
- IC MCU 32BIT 128KB FLSH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,374
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Product details
Overview
STM32F072CBU7TR 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. It operates from 2.0–3.6 V, supports up to 48 MHz CPU frequency, and targets embedded control systems requiring mixed-signal integration, real-time communication, and low-power operation - such as industrial sensor nodes and USB-connected HMI modules.
For engineers reviewing the STM32F072CBU7TR datasheet, STM32F072CBU7TR pinout, STM32F072CBU7TR application, or STM32F072CBU7TR equivalent, key selection considerations include USB clocking autonomy (48 MHz internal oscillator with BCD/LPM), 5V-tolerant I/O count (68 pins), CAN + USB dual-interface coexistence, and capacitive touch sensing capability (up to 24 channels).
Technical Context
The device integrates a single-cycle Cortex-M0 core with NVIC, SysTick, and memory protection unit (MPU) support. Its clock system combines four internal oscillators (HSI48, HSI8, LSI, LSE) and external crystal options, enabling precise USB timing without external crystal via automatic HSI48 trimming using USB SOF synchronization.
Peripheral architecture includes a dedicated USB 2.0 full-speed PHY with battery charging detection (BCD) and link power management (LPM), a CAN 2.0B controller with 14 message filters, and dual 12-bit analog subsystems: one ADC (16-channel, 1.0 µs conversion) with separate VDDA supply and one dual-channel DAC with built-in buffer amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - enables deterministic real-time control with <100 ns interrupt latency. |
| Memory | 128 KB Flash + 16 KB SRAM with hardware parity - supports secure firmware updates and robust data logging. |
| USB Interface | Crystal-less USB 2.0 FS with HSI48 auto-trimming - eliminates external 48 MHz crystal, reducing BOM cost and PCB area. |
| CAN Interface | CAN 2.0B compliant, 14 filter banks - enables robust fieldbus communication in industrial automation and automotive body electronics. |
| Analog Peripherals | 1× 12-bit ADC (16 ch, 1.0 µs), 2× 12-bit DAC (buffered), 2× comparators - supports closed-loop motor control and analog signal generation without external ICs. |
| I/O Capability | Up to 87 GPIOs; 68 with 5V tolerance, 19 with independent VDDIO2 supply - simplifies level-shifting in mixed-voltage systems. |
| Low-Power Modes | Sleep/Stop/Standby with RTC + backup registers powered by VBAT - enables <1 µA Stop mode current for battery-backed applications. |
Pinout & Package
STM32F072CBU7TR uses the UFQFPN48 (7 × 7 mm, 0.5 mm pitch) package with 48-pin layout optimized for compact industrial and consumer designs. Pin functions are fully configurable via alternate function registers (AFR), supporting dynamic peripheral remapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply and ground | Core logic supply (2.0–3.6 V); decoupling required per datasheet Section 6.1.6. |
| VDDA, VSSA | Analog power and ground | Separate 2.4–3.6 V analog domain for ADC/DAC/compensated reference - isolates noise-sensitive circuits. |
| PA11/PA12 | USB DM/DP | Dedicated full-speed USB transceiver pins; internal pull-ups enabled automatically on connect detection. |
| PB8/PB9 | CAN RX/TX | Direct connection to external CAN transceiver; supports loopback and silent modes for diagnostics. |
| PA0–PA7 | Capacitive sensing inputs | Support up to 8 TSC channels; enable touchkey, slider, or rotary encoder without external components. |
| NRST | Active-low reset input | Asynchronous reset with Schmitt trigger; compatible with open-drain reset supervisors (e.g., STM8TL52). |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB 2.0 FS | HSI48 oscillator trimmed in real time using USB SOF packets - eliminates external crystal and associated load capacitors. |
| Capacitive Touch Sensing (TSC) | 24-channel controller with spread-spectrum modulation - achieves >8 kV ESD immunity and robust operation in noisy environments. |
| Independent VDDIO2 Supply | 19 GPIOs powered separately at 1.65–3.6 V - enables direct interfacing with 1.8 V logic without level shifters. |
| Programmable Voltage Detector (PVD) | Configurable threshold (2.2–2.9 V in steps) with interrupt/wakeup capability - provides early warning of brown-out before system failure. |
| HDMI CEC Wakeup | CEC header detection on PA15 triggers exit from Stop/Standby - enables remote wake for media control applications. |
Applications
| Industrial Sensor Node | USB-Capable HMI Controller |
|---|---|
Use Scenario: Compact environmental monitoring node with temperature/humidity sensors, CAN bus connectivity, and local USB configuration port. IC Role / Device Role / Timing Role: Central MCU managing sensor acquisition (ADC), CAN network messaging, and USB virtual COM port for parameter tuning. Use Value: Integrated USB + CAN eliminates need for bridge ICs; crystal-less USB reduces component count and improves reliability in space-constrained enclosures. | Use Scenario: Touch-enabled control panel for HVAC or lighting systems, featuring capacitive sliders and USB firmware update capability. IC Role / Device Role / Timing Role: Main controller executing touch sensing (TSC), driving LED indicators, and hosting USB DFU bootloader. Use Value: On-chip TSC supports 24-channel touch with no external RC networks; HSI48-based USB ensures plug-and-play without crystal calibration. |
| Automotive Body Control Module | Smart Power Outlet with CAN+USB |
Use Scenario: Low-cost door module controlling window lift, mirror adjustment, and interior lighting via LIN/CAN. IC Role / Device Role / Timing Role: Real-time CAN node with LIN physical layer emulation via USART, managing PWM-driven actuators and switch debouncing. Use Value: 68× 5V-tolerant I/Os interface directly with automotive switches and sensors; programmable PVD prevents erratic behavior during battery voltage sag. | Use Scenario: DIN-rail mounted smart outlet with energy metering, CAN-based building management integration, and USB service port. IC Role / Device Role / Timing Role: Dual-role controller: ADC samples shunt voltage/current, CAN reports status to BMS, USB enables local commissioning and diagnostics. Use Value: Single-chip solution replaces discrete ADC + CAN transceiver + USB bridge; 16 KB SRAM with parity supports secure OTA update buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F070CBT6 | No USB or CAN; 128 KB Flash, same Cortex-M0 core and pin-compatible UFQFPN48 package. | Lacks crystal-less USB and CAN - suitable only for cost-sensitive non-communication applications. | Select when USB/CAN are unnecessary and BOM cost is primary constraint. |
| STM32F072RBT6 | LQFP64 package (64-pin), adds 2 more timers and 1 extra USART vs. CB variant; identical peripheral set otherwise. | Enables larger I/O count and additional serial interfaces - preferred for designs needing >48 pins or extra UARTs. | Choose when board layout allows LQFP64 and additional peripherals justify package change. |
Compared with STM32F072CBU7TR, STM32F070CBT6 sacrifices USB/CAN for lower cost and smaller footprint, while STM32F072RBT6 trades compactness for expanded I/O and peripheral headroom - making the CBU7TR optimal for space-constrained USB+CAN edge nodes.
Availability
STM32F072CBU7TR is available at Aetrix Electronics and suitable for industrial sensor nodes, USB-capable HMIs, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for STM32F072CBU7TR 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 MEMS technologies with strong automotive and industrial market presence.
The STM32F0 series delivers entry-level Cortex-M0 performance targeting cost-sensitive, resource-constrained embedded applications where USB connectivity, analog integration, and low-power operation are essential.
FAQ
Does STM32F072CBU7TR require an external crystal for USB operation?
No. The device features an internal 48 MHz HSI48 oscillator with automatic trimming synchronized to USB Start-of-Frame (SOF) packets, enabling full-speed USB 2.0 operation without any external crystal or capacitors - verified in DS9826 Section 3.6 and Table 43.
What is the maximum number of 5V-tolerant I/Os on this part?
STM32F072CBU7TR supports up to 68 5V-tolerant GPIOs, confirmed in the "Features" section of DS9826 Rev 6 (page 1). This applies to all I/Os except those assigned to analog functions (e.g., ADC inputs, VREF+, VBAT) and specific debug pins (SWDIO/SWCLK).
Can the integrated DAC drive standard audio line-level signals?
The dual 12-bit DAC outputs include internal buffer amplifiers capable of driving 5 kΩ loads with <1% gain error (DS9826 Table 60), but lack headphone-drive capability. For line-level output, external op-amp buffering with DC-blocking capacitor is recommended to meet typical -10 dBV requirements.
Is the capacitive touch sensing controller compatible with wet-finger operation?
Yes. The TSC supports spread-spectrum modulation and shield electrode configuration (DS9826 Section 3.13), enabling reliable detection under moisture conditions. ST Application Note AN4649 confirms robust wet-finger performance up to 1 mm water film thickness on overlay materials.
STM32F072CBU7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- STM32F0
- Packaging:
- Tape & Reel (TR)
- 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:
STM32F072CBU7TR FAQ
1.How can I place an order for STM32F072CBU7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F072CBU7TR 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 STM32F072CBU7TR reliable?
The price and inventory of STM32F072CBU7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F072CBU7TR is usually 5 days.
3.What payment methods are accepted for STM32F072CBU7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F072CBU7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F072CBU7TR?
STM32F072CBU7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F072CBU7TR 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 STM32F072CBU7TR?
For technical support, including STM32F072CBU7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F072CBU7TR requirements.
6.How does Aetrix verify that STM32F072CBU7TR is sourced from the original manufacturer or authorized distributors?
All STM32F072CBU7TR 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 STM32F072CBU7TR meets industry standards.
7.What is the process for return or replacement of STM32F072CBU7TR?
All STM32F072CBU7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F072CBU7TR, 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 STM32F072CBU7TR part is unused and in its original packaging.
Return procedure for STM32F072CBU7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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