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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersSTM32G0B1CBU3
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STM32G0B1CBU3 - STMicroelectronics

Manufacturer Part Number
STM32G0B1CBU3
Manufacturer
STMicroelectronics
Allelco Part Number
98D-STM32G0B1CBU3
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
46,920 pcs available, New & Original
Parts Description
CONTROLLER / PROCESSOR
Package
48-UFQFPN (7x7)
Data sheet
-
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 46920
  • Unit Price: $3.753
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $3.753 $3.75
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

STM32G0B1CBU3 Tech Specifications
STMicroelectronics - STM32G0B1CBU3 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - STM32G0B1CBU3

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply (Vcc/Vdd) 1.7V ~ 3.6V
Supplier Device Package 48-UFQFPN (7x7)
Speed 64MHz
Series STM32G0
RAM Size 144K x 8
Program Memory Type FLASH
Program Memory Size 128KB (128K x 8)
Peripherals Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Package / Case 48-UFQFN Exposed Pad
Product Attribute Attribute Value
Package Bulk
Oscillator Type External, Internal
Operating Temperature -40°C ~ 125°C (TA)
Number of I/O 44
Mounting Type Surface Mount
EEPROM Size -
Data Converters A/D 17x12b SAR; D/A 2x12b
Core Size 32-Bit
Core Processor ARM® Cortex®-M0+
Connectivity CANbus, HDMI-CEC, I²C, IrDA, LINbus, SPI, UART/USART, USB

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected

Frequently Asked Questions(FAQ)

How does the STM32G0B1CBU3 compare to other STM32G0 series microcontrollers in terms of program memory size and power efficiency for battery-powered applications?
The STM32G0B1CBU3 offers 128KB of embedded Flash memory, which positions it above entry-level STM32G0 variants like the STM32G071 that typically provide 128KB down to 64KB options. This larger memory footprint supports more complex firmware routines and reduces the need for external memory components. When evaluating power efficiency, the STM32G0B1CBU3 leverages the ARM Cortex-M0+ architecture’s low active and standby current consumption—typically under 15 µA in Stop mode—making it suitable for energy-constrained designs such as IoT sensors or portable devices. Its voltage range of 1.7V to 3.6V enables operation directly from single-cell Li-ion batteries without additional regulators, improving overall system efficiency compared to higher-voltage MCUs.
What are the key trade-offs when selecting the STM32G0B1CBU3 for USB connectivity versus using a standalone USB transceiver chip?
The STM32G0B1CBU3 integrates native USB 2.0 Full-Speed (12 Mbps) support with built-in transceiver circuitry, eliminating the need for an external USB PHY chip in many applications. This reduces bill-of-materials cost and board space by up to 30% compared to solutions requiring discrete transceivers. However, the integrated USB controller is limited to Full-Speed operation, which may not meet bandwidth requirements for high-speed peripherals like cameras or mass storage devices. Additionally, while the internal regulator supports VBUS detection and power delivery negotiation via USB Type-C, designers must ensure proper decoupling and impedance matching on D+/D- lines to maintain signal integrity—failure to do so can lead to enumeration failures. In contrast, external PHYs offer flexibility across speed modes but increase component count and layout complexity.
Can the STM32G0B1CBU3 reliably operate at full speed (64 MHz) across its entire industrial temperature range, and what clocking considerations should be taken into account?
Yes, the STM32G0B1CBU3 is specified to run at up to 64 MHz across the full -40°C to +125°C operating range, provided stable internal or external clock sources are used. The device includes a calibrated internal high-speed RC oscillator (HSI) and a low-power internal RC oscillator (MSI), but for precision timing-critical applications, an external 8 MHz crystal with load capacitors matched to the crystal specifications ensures frequency stability within ±10 ppm. At temperatures approaching 125°C, the maximum achievable clock frequency may slightly degrade due to process variations, though ST’s characterization data confirms sustained 64 MHz operation through qualification testing. Designers should also consider PLL jitter performance when deriving high-frequency clocks from lower-precision sources, as this affects ADC sampling accuracy and communication protocol timing margins.
How does the DMA implementation in the STM32G0B1CBU3 impact real-time data handling in motor control or sensor fusion applications?
The STM32G0B1CBU3 features a flexible DMA controller supporting up to 7 channels with peripheral-to-memory, memory-to-peripheral, and memory-to-memory transfers. This allows simultaneous data acquisition from the 17-channel SAR ADC while updating PWM duty cycles via timer-triggered transfers—critical for closed-loop motor control systems. For example, reading 12-bit ADC samples at 1 Msps requires transferring 17 words per conversion cycle; the DMA offloads the CPU from managing these buffers, freeing cycles for algorithm execution. Compared to simpler MCUs without hardware DMA, the STM32G0B1CBU3 reduces interrupt overhead by over 80%, enabling deterministic response times even when running complex control loops at 64 MHz.
What design constraints arise when using the STM32G0B1CBU3’s USB Type-C Power Delivery interface in self-powered devices?
While the STM32G0B1CBU3 supports USB PD negotiation via its CC1/CC2 pins and internal BMC layer, implementing PD as a self-powered device requires careful attention to power budgeting and state machine logic. The MCU can source up to 1.5 A at 5 V from its VBUS input, but drawing significant current may violate USB specification compliance if not managed properly. Designers must implement current limiting resistors on VCONN (if used) and ensure adequate bulk capacitance (>10 µF ceramic) near the VBUS pin to handle transient loads during PD handshakes. Additionally, firmware must correctly parse Source Capability messages and avoid conflicting with downstream port behavior—misconfiguration can result in failed enumeration or brownout resets due to inrush currents exceeding the 3.6 V absolute maximum rating.
How does the STM32G0B1CBU3’s brown-out reset (BOR) threshold compare to other voltage monitoring features, and what level of protection does it offer against brownout events?
The STM32G0B1CBU3 provides configurable brown-out detection (BOD) thresholds ranging from 2.0 V to 2.9 V in steps, allowing alignment with common supply rails like 3.3 V or dual-cell alkaline batteries. Unlike basic POR circuits that trigger at fixed voltages, this programmable BOD prevents spurious resets during gradual voltage droops caused by inductive loads or poor regulation. During brownout conditions, the MCU automatically enters reset state before core logic loses stability, preserving register contents and preventing erratic behavior. Combined with its wide operating voltage range (1.7–3.6 V), this feature ensures robust operation in automotive or industrial environments where supply fluctuations are common. Note that brown-out protection is disabled in Standby mode unless explicitly enabled via software, so critical systems should retain BOD functionality even in low-power states.
Is it possible to reprogram the STM32G0B1CBU3’s Flash memory while soldered onto a production PCB, and what precautions are necessary?
Yes, the STM32G0B1CBU3 supports in-system programming (ISP) via SWD (Serial Wire Debug) or UART bootloader interfaces without removing the device. However, successful reprogramming requires ensuring the NRST pin remains accessible and that the BOOT0 pin is held low during reset. Additionally, the Flash memory must remain powered above the minimum VDD threshold (typically 1.7 V) to prevent corruption. If the target system lacks an external debugger, a secondary microcontroller or dedicated programmer can emulate SWCLK/SWDIO signals. One limitation is that erase operations take approximately 30 seconds per sector (1 KB), so frequent updates increase wear on Flash endurance—designers should minimize reflashing cycles or use external non-volatile memory for configuration data.
What are the implications of the STM32G0B1CBU3’s Moisture Sensitivity Level (MSL) 3 classification for storage and assembly processes?
With an MSL 3 rating (168-hour floor life at 30°C/60% RH), the STM32G0B1CBU3 must be stored in dry packaging until 168 hours before solder reflow. After opening, exposure beyond this window risks condensation during reflow, leading to popcorning and potential delamination. Manufacturers should follow JEDEC J-STD-033 guidelines: use humidity indicator cards in packaging and bake units if exceeded. Since the device uses UFQFPN packaging with exposed pad, thermal management during rework is critical—maximum peak temperature must not exceed 260°C for 10 seconds to avoid damage to internal interconnects. These constraints necessitate careful inventory planning and process controls in high-volume production environments.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics STM32G0B1CBU3

Product Attribute STM32G0B1CBU3TR STM32G0B1CBU7 STM32G0B1CBU6TR STM32G0B1CBU7TR
Part Number STM32G0B1CBU3TR STM32G0B1CBU7 STM32G0B1CBU6TR STM32G0B1CBU7TR
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Core Size - - - -
EEPROM Size - - - -
Oscillator Type - - - -
Data Converters - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Program Memory Type - - - -
RAM Size - - - -
Program Memory Size - - - -
Peripherals - - - -
Connectivity - - - -
Core Processor - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply (Vcc/Vdd) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Speed - - - -
Number of I/O - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

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STMicroelectronics

STM32G0B1CBU3

STMicroelectronics
98D-STM32G0B1CBU3

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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