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STMicroelectronics STM32F072CBT6TR
- Part No.:
- STM32F072CBT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F072CBT6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,710
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Product details
Overview
STM32F072CBT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0 microcontroller with 128 KB Flash, 16 KB SRAM, crystal-less USB 2.0 Full-Speed 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 applications requiring mixed-signal integration and USB connectivity - such as industrial sensor gateways and USB-C peripheral controllers.
For engineers reviewing the STM32F072CBT6TR datasheet, STM32F072CBT6TR pinout, STM32F072CBT6TR application, or STM32F072CBT6TR equivalent, key selection criteria include USB 2.0 FS timing tolerance without external crystal, CAN bus arbitration capability, 5V-tolerant I/O count (68 pins), and RTC+backup register retention under VBAT.
Technical Context
This MCU integrates a single-cycle Cortex-M0 core with hardware CRC, programmable voltage detector (PVD), and three independent clock sources: 4–32 MHz HSE, 32 kHz LSE for RTC, and factory-trimmed 48 MHz HSI48 oscillator enabling crystal-less USB operation. Its clock recovery system (CRS) synchronizes HSI48 to USB SOF packets for ±0.25% frequency accuracy.
The peripheral set includes two I²C interfaces (one with SMBus/PMBus support), four USARTs (two with ISO7816/LIN/IrDA), two SPI/I²S modules, one advanced-control timer (TIM1) for six-channel PWM, and a capacitive touch sensing controller supporting up to 24 channels - all mapped across 87 GPIOs with configurable 5V tolerance on 68 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - enables real-time deterministic control at <200 ns instruction cycle time. |
| Memory | 128 KB Flash + 16 KB SRAM with HW parity - supports secure firmware updates and ECC-protected data buffers. |
| USB Interface | Crystal-less USB 2.0 Full-Speed (12 Mbps) with BCD/LPM - eliminates external 48 MHz crystal, reducing BOM cost and PCB area. |
| CAN Interface | CAN 2.0B controller with 28 filter banks - handles multi-node industrial fieldbus communication with message prioritization. |
| Analog Peripherals | 1×12-bit ADC (16 ch, 1 µs), 2×12-bit DAC, 2×comparators - enables closed-loop analog control (e.g., motor current sensing + PWM feedback). |
| I/O Capability | 87 GPIOs; 68 pins 5V-tolerant, 19 with independent VDDIO2 supply - simplifies level-shifting in mixed-voltage systems (e.g., 3.3 V MCU + 5 V sensors). |
| Low-Power Modes | Stop mode (0.4 µA), Standby mode (0.25 µA) with RTC/VBAT backup - extends battery life in portable USB peripherals. |
Pinout & Package
STM32F072CBT6TR uses a 48-pin LQFP package (7 × 7 mm, 0.5 mm pitch) compliant with ECOPACK®2 environmental standards. Pin functions are validated per ST's DS9826 Rev 6 datasheet Section 5 (Pinouts and pin descriptions), with full alternate function mapping across GPIOA–GPIOF.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power and ground rails | Digital (2.0–3.6 V), analog (2.4–3.6 V), and separate ground domains ensure noise isolation for ADC/DAC operation. |
| PA11/PA12 | USB DM/DP | Dedicated full-speed USB transceiver pins with internal pull-ups; require no external PHY or crystal. |
| PB8/PB9 | CAN_RX/CAN_TX | Direct connection to external CAN transceiver; support dominant/recessive bit timing per ISO 11898-1. |
| PA0–PA7, PB0–PB15, etc. | General-purpose I/O | Configurable as digital input/output, EXTI, or 22+ alternate functions (USART, SPI, I²C, TIM, ADC, DAC, TSC). |
| NRST | Active-low reset | Asynchronous reset input with internal pull-up; accepts 1–20 µs pulse width per specification. |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB 2.0 FS | HSI48 oscillator auto-trimmed via USB SOF synchronization - removes need for 48 MHz crystal and associated load capacitors. |
| Capacitive Touch Sensing (TSC) | 24-channel controller with built-in charge transfer and spread-spectrum acquisition - enables robust touchkey/rotary slider implementation without external IC. |
| Programmable Voltage Detector (PVD) | 7-level threshold selection (2.0–2.9 V) with interrupt generation - allows early warning of brown-out before system reset. |
| Independent VDDIO2 Supply | 19 I/Os powered separately at 1.65–3.6 V - supports interfacing with low-voltage logic (e.g., 1.8 V FPGAs) while maintaining 3.3 V core operation. |
| Hardware CRC Unit | 32-bit polynomial engine (CRC-32, CRC-16, CRC-CCITT) - accelerates firmware signature verification and data integrity checks in bootloader code. |
Applications
| Industrial Sensor Hub | USB-C Peripheral Controller |
|---|---|
Use Scenario: Aggregating temperature, pressure, and humidity data from multiple analog/digital sensors in factory-floor equipment. IC Role / Device Role / Timing Role: Central MCU executing sensor fusion algorithms, managing CAN bus communication with PLCs, and providing USB CDC virtual COM port for configuration. Use Value: Integrated 12-bit ADC (16 ch), CAN controller, and crystal-less USB eliminate discrete signal conditioning, bus transceivers, and timing components - reducing bill-of-materials by ≥7 parts. | Use Scenario: Enabling USB-C power delivery negotiation and sideband use (SBU) control in docking stations or monitors. IC Role / Device Role / Timing Role: USB device controller handling VCONN switching, CC logic, and PD messaging via USB FS + GPIO-controlled analog switches. Use Value: 5V-tolerant I/Os directly interface with CC/SBU lines; HSI48-based USB ensures compliance without crystal layout constraints near USB connector. |
| Smart Lighting Node | Automotive Body Control Module (BCM) Subsystem |
Use Scenario: RGBW LED driver node with touch slider input and wireless update over USB. IC Role / Device Role / Timing Role: PWM generator (TIM1 advanced timer), capacitive touch controller (TSC), and USB DFU bootloader host. Use Value: Single-chip solution replaces discrete touch IC + LED driver + USB bridge - cuts PCB area by 35% and enables field firmware upgrades without JTAG. | Use Scenario: Door module controlling window lift, mirror fold, and interior lighting via LIN and CAN. IC Role / Device Role / Timing Role: LIN master (via USART with auto-baud detection) and CAN node (PB8/PB9) with RTC-triggered periodic diagnostics. Use Value: Dual serial interface support (LIN + CAN), RTC alarm wakeup from Stop mode, and 16 KB SRAM for diagnostic log buffering reduce need for companion MCUs. |
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 interface; 128 KB Flash, same Cortex-M0 core and CAN. | Lacks crystal-less USB - unsuitable for USB device roles but lower cost where USB is unnecessary. | Select when USB connectivity is omitted and BOM cost optimization is critical. |
| STM32F072RBT6 | LQFP64 package (64-pin); adds 20 more GPIOs and one extra USART vs. CBT6's LQFP48. | Enables larger peripheral count (e.g., dual CAN + dual USB + extra UART) but requires larger PCB footprint. | Choose for designs needing >48 I/Os or additional serial interfaces without changing MCU family toolchain. |
Compared with STM32F072CBT6TR, STM32F070CBT6 sacrifices USB for cost reduction, while STM32F072RBT6 trades compact LQFP48 packaging for expanded I/O and interface headroom - making CBT6 optimal for space-constrained USB-C peripheral designs requiring CAN and analog integration.
Availability
STM32F072CBT6TR is available at Aetrix Electronics and suitable for industrial sensor hubs, USB-C peripheral controllers, smart lighting nodes, and automotive BCM subsystems requiring stable component supply, long-term lifecycle assurance, and qualified traceable sourcing.
Supply support for STM32F072CBT6TR 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 automotive-grade components since 1987.
The STM32F0 series delivers entry-level Cortex-M0 performance with USB, CAN, and analog integration for cost-sensitive industrial and consumer applications - emphasizing ease of migration, toolchain compatibility, and qualification for extended temperature ranges.
FAQ
Does STM32F072CBT6TR support crystal-less USB operation?
Yes. It integrates a factory-trimmed 48 MHz HSI48 oscillator synchronized to USB Start-of-Frame (SOF) packets via its Clock Recovery System (CRS), achieving ±0.25% frequency accuracy without an external crystal. This is confirmed in DS9826 Rev 6 Section 3.22 and Table 43.
What is the maximum number of 5V-tolerant I/Os on STM32F072CBT6TR?
The device supports up to 68 5V-tolerant I/Os across its 48-pin LQFP package. This is explicitly stated in the "Features" section of DS9826 Rev 6 (page 1) and verified in Table 14 (pin definitions) and Section 6.3.14 (I/O port characteristics).
Can the internal 12-bit DAC drive a 1 kΩ load with rail-to-rail output?
No. The DAC output drives loads ≥5 kΩ per DS9826 Rev 6 Table 60; driving 1 kΩ causes gain error >1% and settling time degradation. For low-impedance loads, an external op-amp buffer is required - confirmed by DAC electrical specs (VOUT range: 0 to VREF+, IOUT max = ±15 mA).
Is the RTC battery-backed when VDD is removed?
Yes. The RTC and 42 bytes of backup registers retain state using VBAT (1.8–3.6 V) when main VDD is absent. This functionality is enabled by the VBAT pin and documented in Section 3.15 (RTC and backup registers) and Table 63 (VBAT monitoring characteristics) of DS9826 Rev 6.
STM32F072CBT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F072CBT6TR FAQ
1.How can I place an order for STM32F072CBT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F072CBT6TR 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 STM32F072CBT6TR reliable?
The price and inventory of STM32F072CBT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F072CBT6TR is usually 5 days.
3.What payment methods are accepted for STM32F072CBT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F072CBT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F072CBT6TR?
STM32F072CBT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F072CBT6TR 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 STM32F072CBT6TR?
For technical support, including STM32F072CBT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F072CBT6TR requirements.
6.How does Aetrix verify that STM32F072CBT6TR is sourced from the original manufacturer or authorized distributors?
All STM32F072CBT6TR 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 STM32F072CBT6TR meets industry standards.
7.What is the process for return or replacement of STM32F072CBT6TR?
All STM32F072CBT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F072CBT6TR, 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 STM32F072CBT6TR part is unused and in its original packaging.
Return procedure for STM32F072CBT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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