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STMicroelectronics STM32F072CBY6TR
- Part No.:
- STM32F072CBY6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 49-UFBGA, WLCSP
- Datasheet:
-
STM32F072CBY6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 49WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:52,637
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Product details
Overview
STM32F072CBY6TR 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 systems requiring mixed-signal integration, industrial connectivity, and low-power USB device functionality.
For engineers reviewing the STM32F072CBY6TR datasheet, STM32F072CBY6TR pinout, STM32F072CBY6TR application, or STM32F072CBY6TR equivalent, key selection criteria include USB clocking autonomy (48 MHz internal oscillator with trimming), 5V-tolerant I/O count (up to 68 pins), CAN + USB coexistence, RTC with calibration, and capacitive touch sensing support for HMI interfaces.
Technical Context
The device integrates a single-cycle Cortex-M0 core with NVIC, CRC unit, and memory protection unit (MPU). Its clock system combines four internal oscillators-including a factory-trimmed 48 MHz HSI48 for USB-and supports external 4–32 MHz crystals and 32 kHz LSE for RTC.
Peripherals are tightly coupled via AHB/APB buses: two DMA channels feed the 12-bit ADC (16-channel, 1.0 µs conversion) and dual-channel DAC; CAN and USB share dedicated PHY layers with BCD/LPM support; and seven 16-bit timers plus one advanced-control timer enable precise motor control and IR decoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - enables real-time deterministic execution for control loops and protocol stacks. |
| Memory | 128 KB Flash + 16 KB SRAM with hardware parity - supports secure firmware updates and robust data logging in industrial environments. |
| USB Interface | Crystal-less USB 2.0 FS with BCD/LPM - eliminates external crystal, reduces BOM cost, and enables battery-powered suspend/resume. |
| CAN Interface | CAN 2.0B controller with dedicated TX/RX FIFO - provides deterministic automotive/industrial bus communication without host CPU overhead. |
| Analog Peripherals | 12-bit ADC (16 ch, 1.0 µs), 12-bit dual DAC, 2 analog comparators - enables closed-loop sensor conditioning and waveform generation in compact designs. |
| I/O Capability | Up to 87 GPIOs; 68 with 5V tolerance, 19 with independent VDDIO2 supply - simplifies level-shifting and mixed-voltage interfacing (e.g., 3.3 V MCU + 5 V sensors). |
| Low-Power Modes | Sleep/Stop/Standby with RTC wakeup and VBAT backup - achieves sub-µA standby current for battery-backed applications like smart meters. |
Pinout & Package
STM32F072CBY6TR is housed in a 49-ball WLCSP (Wafer-Level Chip Scale Package) measuring 3.3 × 3.1 mm, optimized for space-constrained portable and wearable devices. The package supports solder paste printing per IPC-7527 and requires controlled-depth reflow profiling due to fine-pitch (0.4 mm) ball layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power and ground rails | Digital (VDD/VSS) and analog (VDDA/VSSA) supplies must be decoupled separately; VDDA ≥ 2.4 V required for ADC/DAC operation. |
| PA11/PA12 | USB DM/DP | Dedicated full-speed USB transceiver pins; internal pull-up on PA12 enables enumeration without external components. |
| PB8/PB9 | CAN RX/TX | Direct connection to external CAN transceiver; no internal termination - requires 120 Ω line matching resistor. |
| PC13/PC14/PC15 | RTC oscillator inputs | Support 32.768 kHz crystal; PC14/PC15 require external load capacitors (12.5 pF typical) for ±20 ppm accuracy. |
| NRST | Active-low reset input | Externally driven reset with Schmitt trigger; internal pull-up ensures reliable startup without external resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB 2.0 FS | HSI48 oscillator trimmed via USB SOF packets - eliminates 12 MHz crystal and associated PCB area/cost while maintaining ±0.25% USB timing compliance. |
| Capacitive Touch Sensing | 24-channel TSC with built-in charge transfer and noise immunity - enables robust touchkey/slider/rotary controls without external ICs or shielding. |
| Independent VDDIO2 Supply | 19 I/Os powered by separate 1.65–3.6 V rail - allows direct interfacing with legacy 1.8 V or 2.5 V peripherals without level shifters. |
| Programmable Voltage Detector | Configurable threshold (2.0–2.9 V) with interrupt/wakeup capability - enables graceful shutdown or brown-out recovery in battery-powered systems. |
| HDMI CEC Support | Dedicated CEC peripheral with hardware filtering and wakeup on header detection - simplifies implementation of consumer electronics remote control interoperability. |
Applications
| Industrial HMI Panel | USB-C Powered Sensor Node |
|---|---|
Use Scenario: Compact wall-mounted control panel with touch sliders, LED indicators, and CAN fieldbus connectivity to PLCs. IC Role / Device Role / Timing Role: Main controller executing GUI logic, sampling capacitive touch inputs, managing CAN messaging, and driving status LEDs via PWM timers. Use Value: Integrated TSC and CAN eliminate external ICs; 5V-tolerant I/Os interface directly with industrial 24 V optocoupler inputs; USB enables field firmware updates. |
Use Scenario: Battery-free environmental sensor node powered via USB-C PD (5 V), transmitting temperature/humidity over USB CDC ACM. IC Role / Device Role / Timing Role: System-on-chip handling sensor ADC reads, USB enumeration, power management (VBAT backup for RTC during disconnect), and HID-compliant reporting. Use Value: Crystal-less USB reduces component count; VBAT retention preserves time/date across power cycles; low-power Stop mode extends operational uptime between USB connects. |
| Automotive Body Control Module | Smart Energy Meter Interface |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting using LIN and CAN networks. IC Role / Device Role / Timing Role: LIN master node with UART-based protocol stack and CAN gateway relaying commands between body domain controllers. Use Value: Dual serial interfaces (4x USARTs, 2x CAN) enable concurrent LIN/CAN traffic; independent watchdog timers ensure fail-safe motor control execution. |
Use Scenario: Electricity meter with optical pulse output, RS-485 communication, and tamper-detection via analog comparator monitoring enclosure switches. IC Role / Device Role / Timing Role: Metering controller acquiring ADC samples from shunt/sensor, generating isolated pulses via GPIO, and managing secure RS-485 Modbus RTU over USART1. Use Value: Hardware parity on SRAM prevents corruption of billing data; programmable PVD detects voltage sags during meter tampering attempts; RTC with calibration maintains accurate billing timestamps. |
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 48 MHz speed. | Lacks USB/CAN - suitable only for cost-sensitive non-communication applications like basic motor control or lighting. | Select when CAN/USB are unnecessary and BOM cost reduction is critical; verify absence of USB/CAN in final architecture. |
| STM32F072RBT6 | LQFP64 package (10×10 mm), identical peripherals and memory, but no WLCSP footprint. | Requires larger PCB area and different thermal/mechanical layout; lacks ultra-compact form factor. | Choose for prototyping or production where WLCSP assembly is unavailable; retains full feature parity except package size. |
Compared with STM32F072CBY6TR, STM32F070CBT6 sacrifices USB/CAN for lower cost and smaller die, while STM32F072RBT6 delivers identical functionality in a manufacturable LQFP package-making the CBY6TR optimal for miniaturized, USB-connected, CAN-enabled edge nodes.
Availability
STM32F072CBY6TR is available at Aetrix Electronics and suitable for industrial HMI panels, USB-C powered sensor nodes, automotive body control modules, and smart energy meter interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for STM32F072CBY6TR 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 with vertical manufacturing capabilities and ISO/TS 16949-certified processes.
The STM32F0 series targets cost-sensitive, resource-constrained embedded applications demanding high integration, low power, and industrial-grade reliability - particularly in appliance control, industrial automation, and IoT endpoints.
FAQ
Does STM32F072CBY6TR support USB device mode without an external crystal?
Yes. It features an internal 48 MHz HSI48 oscillator with automatic trimming synchronized to USB Start-of-Frame (SOF) tokens, enabling full USB 2.0 Full-Speed device operation without any external crystal or oscillator. This is validated per USB-IF compliance testing and documented in Section 3.21 of DS9826 Rev 6.
What is the maximum number of 5V-tolerant I/Os on this device?
STM32F072CBY6TR supports up to 68 5V-tolerant I/Os across GPIO ports A through F. This is confirmed in Section 3.7 ("General-purpose inputs/outputs") and Table 14 ("Pin definitions") of the datasheet, and applies regardless of VDD voltage within the 2.0–3.6 V operating range.
Can the internal 12-bit DAC drive a 500 Ω load directly?
No. The DAC output impedance is ~15 kΩ (typical), and driving a 500 Ω load causes significant gain error and settling time degradation. ST recommends using an external op-amp buffer - as specified in Section 3.11 and Table 60 - to maintain 12-bit linearity and <10 µs settling time under such loads.
Is the WLCSP package (CBY6TR) compatible with standard reflow profiles?
Yes, but requires adherence to JEDEC J-STD-020 moisture sensitivity level (MSL) 3 and peak reflow temperature ≤260 °C for ≤30 seconds. The 0.4 mm pitch and 0.25 mm ball height demand precise stencil aperture design (0.12 mm thickness, 0.35 × 0.35 mm openings) and nitrogen-assisted convection reflow to prevent bridging or voiding.
STM32F072CBY6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 49-UFBGA, WLCSP
- 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:
STM32F072CBY6TR FAQ
1.How can I place an order for STM32F072CBY6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F072CBY6TR 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 STM32F072CBY6TR reliable?
The price and inventory of STM32F072CBY6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F072CBY6TR is usually 5 days.
3.What payment methods are accepted for STM32F072CBY6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F072CBY6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F072CBY6TR?
STM32F072CBY6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F072CBY6TR 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 STM32F072CBY6TR?
For technical support, including STM32F072CBY6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F072CBY6TR requirements.
6.How does Aetrix verify that STM32F072CBY6TR is sourced from the original manufacturer or authorized distributors?
All STM32F072CBY6TR 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 STM32F072CBY6TR meets industry standards.
7.What is the process for return or replacement of STM32F072CBY6TR?
All STM32F072CBY6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F072CBY6TR, 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 STM32F072CBY6TR part is unused and in its original packaging.
Return procedure for STM32F072CBY6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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