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STMicroelectronics STM32F070CBT6TR
- Part No.:
- STM32F070CBT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F070CBT6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:7,076
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Product details
Overview
STM32F070CBT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0 microcontroller with 128 KB flash, 16 KB SRAM, USB 2.0 Full-Speed interface, 11 timers (including advanced-control TIM1), and 12-bit ADC-designed for cost-sensitive industrial control, smart sensors, and USB-connected embedded devices.
For engineers reviewing the STM32F070CBT6TR datasheet, STM32F070CBT6TR pinout, STM32F070CBT6TR application, or STM32F070CBT6TR equivalent, key selection criteria include USB FS support with BCD/LPM, 5V-tolerant I/Os (up to 51), 48 MHz max CPU frequency, and integrated RTC with alarm/wakeup-critical for low-power USB peripheral designs.
Technical Context
The device integrates an Arm Cortex-M0 core with tightly coupled flash and SRAM, supporting Thumb-2 instruction set and nested vectored interrupt controller (NVIC) for deterministic real-time response. It features dual clock domains: high-speed (HSE/HSI/PLL up to 48 MHz) and low-speed (LSE/LSI for RTC and watchdogs), enabling precise timing isolation.
Its peripheral architecture includes a dedicated 5-channel DMA controller, hardware CRC unit, and flexible GPIO remapping via AFR registers-allowing dynamic reconfiguration of USART, SPI, I2C, and timer alternate functions without PCB redesign. The USB interface implements Battery Charging Detection (BCD) and Link Power Management (LPM) per USB 2.0 specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - enables real-time deterministic execution for motor control and sensor fusion. |
| Flash Memory | 128 KB - sufficient for USB stack + application firmware with field-upgrade capability. |
| SRAM | 16 KB with hardware parity - supports robust data buffering and fault-tolerant operation in industrial environments. |
| USB Interface | USB 2.0 Full-Speed (12 Mbit/s) with BCD and LPM - enables plug-and-play charging detection and host-initiated suspend/resume. |
| ADC | 12-bit, 1.0 µs conversion time, 16-channel - suitable for precision analog sensing (e.g., temperature, voltage monitoring) with single-cycle sampling. |
| I/O Voltage Tolerance | 5 V tolerant on up to 51 pins - simplifies interface with legacy 5 V logic and external sensors without level shifters. |
| RTC | Calendar RTC with alarm and periodic wakeup from Stop/Standby - enables ultra-low-power timekeeping and scheduled wakeups at µA-level current draw. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant ECOPACK², with 48 leads arranged in quad flat configuration. Pin numbering follows standard top-view convention with pin 1 marked by dot or bevel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital power supply | 2.4–3.6 V main supply; decoupling required per datasheet layout guidelines to ensure stable core operation. |
| VDDA | Analog power supply | Separate 2.4–3.6 V rail for ADC/RTC; must be filtered and isolated from digital noise to maintain 12-bit accuracy. |
| PA0–PA15 | General-purpose I/O port A | Up to 16 pins with 5 V tolerance; configurable as GPIO, USART2_TX/RX, SPI1_SCK/MOSI/MISO, or TIM2_CH1–CH4. |
| PB0–PB15 | General-purpose I/O port B | Up to 15 pins with 5 V tolerance; supports TIM3/TIM15/TIM16/TIM17 channels, I2C1_SCL/SDA, and USB_DM/DP on PB11/PB12. |
| NRST | Active-low reset input | Externally driven reset with internal pull-up; requires RC filter per Figure 18 to suppress ESD-induced glitches. |
| USB_DP / USB_DM | USB differential data lines | Full-speed USB transceiver pins; require 27 Ω series resistors and 1.5 kΩ pull-up on DP for device enumeration. |
Key Features
| Feature | Design Value |
|---|---|
| USB Battery Charging Detection (BCD) | Automatically identifies SDP/CDP/DCP chargers per USB BC 1.2, eliminating need for external charger ID ICs. |
| 51 × 5 V-tolerant I/Os | Reduces BOM count and PCB complexity when interfacing with 5 V peripherals, sensors, or displays. |
| Hardware CRC unit | Accelerates firmware integrity checks and communication packet validation in real time, offloading CPU cycles. |
| Advanced-control timer (TIM1) | 6-channel complementary PWM with dead-time insertion - enables direct driving of 3-phase motor gate drivers. |
| Low-power modes (Stop/Standby) | Standby current ≤ 0.3 µA with RTC running - extends battery life in portable USB devices between host interactions. |
Applications
| Industrial Sensor Node | USB Human Interface Device (HID) |
|---|---|
Use Scenario: Compact environmental monitor with temperature/humidity/pressure sensors, local processing, and USB data upload. IC Role / Device Role / Timing Role: Main MCU executing sensor fusion algorithm, managing USB HID report generation, and scheduling periodic measurements via RTC alarm. Use Value: Integrated 12-bit ADC and USB FS eliminate external ADC and USB bridge ICs; 5 V-tolerant I/Os simplify connection to analog sensor outputs. |
Use Scenario: Programmable keyboard or industrial control panel with LED feedback and button matrix scanning. IC Role / Device Role / Timing Role: HID-class USB device controller handling key scan, debouncing, and report transmission; uses SysTick for timing and TIM16 for LED PWM dimming. Use Value: Single-chip solution reduces footprint and cost; BCD support allows direct USB charging while operating as HID device. |
| Smart Lighting Controller | USB-C Powered Peripheral |
Use Scenario: DALI or 0–10 V lighting controller with USB configuration interface and overtemperature protection. IC Role / Device Role / Timing Role: Real-time PWM generator (TIM1/TIM3) for LED dimming, ADC for thermal monitoring, and USB for firmware updates and parameter tuning. Use Value: Hardware PWM with dead-time prevents shoot-through in MOSFET drivers; USB LPM minimizes power during idle periods. |
Use Scenario: USB-C powered test adapter with UART-to-USB bridge and status LEDs. IC Role / Device Role / Timing Role: USB device implementing CDC ACM class; uses internal 48 MHz PLL for USB timing and 32 kHz LSE for accurate USB suspend/resume timing. Use Value: Eliminates external crystal for USB clock (HSE optional); integrated USB PHY reduces component count versus discrete transceiver solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F072CBT6 | Includes CAN 2.0B controller and AES-128 crypto accelerator; same flash/SRAM/USB specs. | Required for CAN bus integration (e.g., industrial fieldbus nodes); adds ~$0.15 BOM cost. | Select when CAN or hardware encryption is mandatory; otherwise STM32F070CBT6TR offers lower cost and identical USB/peripheral feature set. |
| STM32F030F4P6 | 20-pin TSSOP, 16 KB flash, no USB, no RTC calendar, 32 MHz max CPU. | Suitable only for ultra-low-cost, non-USB, non-real-time applications (e.g., simple LED controllers). | Choose only if USB, RTC, or >16 KB code space is unnecessary; lacks critical features for USB peripheral use cases. |
Compared with STM32F072CBT6, STM32F070CBT6TR trades CAN/crypto for lower unit cost and identical USB/RTC/performance-ideal for pure USB HID or CDC devices. Versus STM32F030F4P6, it delivers full USB FS, calendar RTC, and 4× more flash at modest cost premium, enabling richer firmware functionality.
Availability
STM32F070CBT6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, and smart lighting controllers requiring stable component supply and long-term manufacturing continuity.
Supply support for STM32F070CBT6TR 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 targets cost-sensitive, entry-level embedded applications requiring USB connectivity, analog integration, and low-power operation-optimized for rapid development and high-volume deployment.
FAQ
What is the maximum operating frequency of the STM32F070CBT6TR?
The STM32F070CBT6TR operates at up to 48 MHz using its internal 8 MHz RC oscillator with x6 PLL, or directly from an external 4–32 MHz crystal. This frequency is fully supported across all voltage ranges (2.4–3.6 V) and ambient temperatures (–40°C to +85°C), as verified in Section 6.3.9 of DS10697 Rev 4.
Does the STM32F070CBT6TR support USB device charging detection?
Yes-it implements full USB Battery Charging Detection (BCD) per USB BC 1.2 specification, identifying Standard Downstream Ports (SDP), Charging Downstream Ports (CDP), and Dedicated Chargers (DCP) without external components. This is confirmed in Section 3.16 and Table 57 of the datasheet.
How many I/O pins are 5 V tolerant on this device?
Up to 51 I/O pins are 5 V tolerant, including all pins in ports A, B, C, and D except NRST and BOOT0. This is explicitly stated in the "Features" section (page 1) and validated in Section 6.3.14 (I/O port characteristics) of DS10697 Rev 4.
What package type does STM32F070CBT6TR use?
The STM32F070CBT6TR uses the LQFP48 package (7 × 7 mm, 0.5 mm pitch), identified by ordering code suffix "T6". Mechanical dimensions and land pattern requirements are defined in Section 7.3 (page 73) of DS10697 Rev 4, with ECOPACK² environmental compliance.
STM32F070CBT6TR 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:
- I2C, SPI, UART/USART, USB
- Peripherals:
- DMA, 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):
- 2.4V ~ 3.6V
- Data Converters:
- A/D 13x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F070CBT6TR FAQ
1.How can I place an order for STM32F070CBT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F070CBT6TR 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 STM32F070CBT6TR reliable?
The price and inventory of STM32F070CBT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F070CBT6TR is usually 5 days.
3.What payment methods are accepted for STM32F070CBT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F070CBT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F070CBT6TR?
STM32F070CBT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F070CBT6TR 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 STM32F070CBT6TR?
For technical support, including STM32F070CBT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F070CBT6TR requirements.
6.How does Aetrix verify that STM32F070CBT6TR is sourced from the original manufacturer or authorized distributors?
All STM32F070CBT6TR 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 STM32F070CBT6TR meets industry standards.
7.What is the process for return or replacement of STM32F070CBT6TR?
All STM32F070CBT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F070CBT6TR, 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 STM32F070CBT6TR part is unused and in its original packaging.
Return procedure for STM32F070CBT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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