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STMicroelectronics STM32F070CBT6
- Part No.:
- STM32F070CBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F070CBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:440
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Product details
Overview
STM32F070CBT6 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 51 I/Os-49 of which are 5 V tolerant. It operates from 2.4–3.6 V and targets cost-sensitive industrial control, USB-enabled sensor nodes, and smart power peripherals requiring integrated analog (12-bit ADC) and real-time clock (RTC) functionality.
For engineers reviewing the STM32F070CBT6 datasheet, STM32F070CBT6 pinout, STM32F070CBT6 application, or STM32F070CBT6 equivalent, key selection criteria include USB FS support with BCD/LPM, 5 V-tolerant GPIO count, 12-bit ADC accuracy (±2 LSB INL), RTC alarm/wakeup capability, and LQFP48 package compatibility with legacy STM32F030/072 footprint constraints.
Technical Context
The STM32F070CBT6 integrates an Arm Cortex-M0 core running at up to 48 MHz, paired with a flexible clock tree supporting four oscillators: 4–32 MHz HSE, 32.768 kHz LSE, 8 MHz HSI (with x6 PLL), and 40 kHz LSI. Its memory subsystem includes 128 KB flash with error correction and 16 KB SRAM with hardware parity checking-enabling robust operation in industrial environments.
Peripheral integration centers on deterministic real-time control: one 16-bit advanced-control timer (TIM1) delivers six-channel complementary PWM with dead-time insertion; the 12-bit ADC achieves 1.0 µs conversion across 16 channels with separate analog supply (VDDA = 2.4–3.6 V); and dual I²C interfaces support Fast Mode Plus (1 Mbit/s) with 20 mA current sink for bus noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0, 48 MHz max - enables deterministic real-time task scheduling without cache complexity |
| Flash / SRAM | 128 KB flash with ECC, 16 KB SRAM with HW parity - supports firmware integrity verification and fault-tolerant data buffering |
| USB Interface | USB 2.0 Full-Speed with Battery Charging Detection (BCD) and Link Power Management (LPM) - allows direct USB device connectivity without external PHY or charging negotiation IC |
| ADC | 12-bit, 1.0 µs conversion, 16-channel, 0–3.6 V range - provides sufficient resolution and speed for motor current sensing and battery voltage monitoring |
| I/O Voltage Tolerance | 49 of 51 I/Os 5 V tolerant - simplifies level-shifting in mixed-voltage systems interfacing with legacy 5 V logic or sensors |
| RTC | Calendar RTC with alarm and periodic wakeup from Stop/Standby - enables ultra-low-power timekeeping and scheduled system wake-up without external oscillator |
| Timers | 11 timers including TIM1 (6-channel PWM), 7 general-purpose 16-bit timers, WWDG/IWDG - supports motor control, IR decoding, and safety-critical timeout supervision |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch) package with ECOPACK2 compliance. Pinout validated per STMicroelectronics DS10697 Rev 4, Figure 4 and Table 10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Digital/analog power supply | VDD = 2.4–3.6 V; VDDA must be ≥ VDD and ≤ 3.6 V - decoupling required per Section 6.1.6 to prevent ADC noise coupling |
| VSS, VSSA | Digital/analog ground | Separate analog/digital ground planes recommended - minimizes switching noise impact on 12-bit ADC performance |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 49 pins 5 V tolerant; all mappable to EXTI - enables direct connection to 5 V sensors, encoders, or UART transceivers |
| PA11/PA12 | USB DM/DP | Dedicated full-speed USB 2.0 differential pair - requires 27 Ω series resistors and 1.5 kΩ pull-up on DP per USB specification |
| PC13 | RTC oscillator input | Connects to 32.768 kHz crystal - enables calendar RTC operation with ±20 ppm accuracy over –40°C to +85°C |
| NRST | Active-low reset | Open-drain capable; internal pull-up - supports external reset supervisor or push-button reset with debouncing RC network |
Key Features
| Feature | Design Value |
|---|---|
| USB 2.0 FS with BCD/LPM | Enables self-powered USB devices (e.g., HID keyboards) without external charger detection IC or suspend/resume glue logic |
| 5 V-tolerant I/Os (49) | Eliminates need for external level shifters when interfacing with 5 V UARTs, SPI sensors, or digital I/O modules |
| 12-bit ADC with 16 channels | Supports simultaneous sampling of motor phase currents and DC bus voltage in BLDC control using DMA-triggered sequences |
| Advanced-control timer (TIM1) | Provides complementary PWM outputs with programmable dead-time - essential for gate driver control in half-bridge inverters |
| Calendar RTC with alarm | Permits time-stamped event logging and scheduled wake-up from Stop mode at <1 µA typical current draw |
Applications
| Industrial Motor Control | USB Human Interface Device |
|---|---|
Use Scenario: Brushless DC motor drive in HVAC blowers or small pumps with closed-loop speed regulation. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, generating 6-channel PWM via TIM1, sampling current/voltage via ADC, and managing USB-based configuration. Use Value: Integrated 12-bit ADC and 5 V-tolerant GPIO reduce BOM count; USB FS enables field firmware updates without JTAG debugger. | Use Scenario: Programmable industrial keypad with LED feedback and USB HID reporting. IC Role / Device Role / Timing Role: Host MCU handling matrix scanning, debouncing, LED PWM dimming, and USB HID descriptor enumeration. Use Value: 49× 5 V-tolerant I/Os directly interface mechanical switches and common-anode LEDs; RTC enables timestamped audit logs. |
| Smart Power Outlet | Low-Power Sensor Node |
Use Scenario: Wi-Fi-connected outlet with energy metering, relay control, and overcurrent protection. IC Role / Device Role / Timing Role: System manager coordinating relay timing, ADC-based current sensing, USB-based calibration, and RTC-scheduled load shedding. Use Value: 128 KB flash stores secure bootloader and OTA update image; USB BCD detects wall adapter presence for auto-power-mode selection. | Use Scenario: Battery-powered environmental monitor transmitting temperature/humidity via BLE gateway. IC Role / Device Role / Timing Role: Low-power sensor aggregator sampling ADC and RTC alarm, entering Stop mode between readings, waking via LSE-driven RTC. Use Value: Standby current <0.5 µA with RTC active extends CR2032 battery life beyond 5 years; 16 KB SRAM retains context across deep-sleep cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F072CBT6 | Same pinout and peripherals, but adds CAN 2.0B controller and removes USB FS | Suitable for CAN-based industrial networks; unsuitable where USB device connectivity is required | Select only if CAN bus integration outweighs loss of USB functionality and increased cost |
| STM32F030F4P6 | 16 KB flash, no USB, TSSOP20 package, 2.4–3.6 V supply | Targeted at ultra-low-cost, space-constrained applications without USB or high-resolution ADC needs | Choose for minimal BOM cost where 128 KB flash, USB, and 12-bit ADC are unnecessary |
Compared with STM32F072CBT6, the STM32F070CBT6 trades CAN for USB FS-making it optimal for PC-connected peripherals. Against STM32F030F4P6, it offers 8× more flash, full USB stack support, and enhanced analog capability-justifying its use in feature-rich, USB-enabled edge devices.
Availability
STM32F070CBT6 is available at Aetrix Electronics and suitable for industrial motor control, USB human interface devices, and smart power outlets requiring stable component supply and long-term manufacturability.
Supply support for STM32F070CBT6 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 automotive-grade ICs with ISO 9001 and IATF 16949 certification.
The STM32F0 series targets cost-sensitive, resource-constrained applications requiring Arm Cortex-M0 performance, USB connectivity, and industrial-grade reliability-designed specifically for entry-level industrial automation and consumer electronics.
FAQ
Does STM32F070CBT6 support USB device enumeration without external components?
Yes. The integrated USB 2.0 Full-Speed PHY supports device enumeration with only two 27 Ω series resistors on DP/DM and a 1.5 kΩ pull-up on DP. No external transceiver or crystal is needed-the internal 48 MHz PLL derives USB clock from HSI or HSE sources per DS10697 Section 3.16.
What is the maximum operating temperature for STM32F070CBT6 in industrial applications?
The STM32F070CBT6 is qualified for industrial temperature range (–40°C to +85°C) per DS10697 Section 6.3.1. Its thermal resistance (θJA) is 46 °C/W in LQFP48 package (Table 61), enabling reliable operation at full 48 MHz CPU frequency under natural convection cooling with proper PCB copper area.
Can the 12-bit ADC measure signals above VDDA?
No. The ADC input voltage range is strictly 0 to VDDA (2.4–3.6 V), as specified in Section 6.3.16. Applying voltage >VDDA risks damage or erroneous conversion. For higher-range signals, external resistor dividers or op-amp scaling circuits are required to scale inputs within the valid range.
Is the LQFP48 footprint of STM32F070CBT6 compatible with STM32F030F4P6?
No. STM32F030F4P6 uses TSSOP20 (6.4 × 4.4 mm), while STM32F070CBT6 uses LQFP48 (7 × 7 mm). They are physically incompatible. However, STM32F070CBT6 shares identical LQFP48 pinout and peripheral mapping with STM32F072CBT6, enabling drop-in replacement where USB is not required.
STM32F070CBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F0
- Packaging:
- Tray
- 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 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F070CBT6 FAQ
1.How can I place an order for STM32F070CBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F070CBT6 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 STM32F070CBT6 reliable?
The price and inventory of STM32F070CBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F070CBT6 is usually 5 days.
3.What payment methods are accepted for STM32F070CBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F070CBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F070CBT6?
STM32F070CBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F070CBT6 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 STM32F070CBT6?
For technical support, including STM32F070CBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F070CBT6 requirements.
6.How does Aetrix verify that STM32F070CBT6 is sourced from the original manufacturer or authorized distributors?
All STM32F070CBT6 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 STM32F070CBT6 meets industry standards.
7.What is the process for return or replacement of STM32F070CBT6?
All STM32F070CBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F070CBT6, 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 STM32F070CBT6 part is unused and in its original packaging.
Return procedure for STM32F070CBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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