STM32G031G8U6 - 64KB Flash ARM Cortex-M0+ MCU | STMicroelectronics
料号： STM32G031G8U6 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.15 | $2.15 |
| 10 | $1.93 | $19.30 |
| 100 | $1.72 | $172.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.38 | $1,380.00 |
STM32G031G8U6 概述
What is an ARM Cortex-M0+ microcontroller? It is a 32-bit processor core designed for low-power and high-efficiency embedded control. The Cortex-M0+ is the smallest and most energy-efficient ARM processor, making it ideal for IoT devices, consumer electronics, and industrial sensors. In the hierarchy of microcontrollers, the Cortex-M0+ sits below the Cortex-M3 and Cortex-M4, offering lower performance but significantly reduced power consumption and cost. This makes it a popular choice for battery-powered and space-constrained applications.
Key features of the STM32G031G8U6 include a 12-bit ADC with up to 2.5 MSPS, a 12-bit DAC, an operational amplifier, and a low-power RTC. It supports a wide supply voltage range of 1.7V to 3.6V, making it suitable for single-cell battery operation. The device also includes a flexible clock control, with an internal 16 MHz RC oscillator and an external crystal oscillator option. The UFQFPN-28 package measures 4x4 mm, offering a compact footprint for space-limited designs.
From a technical depth perspective, the STM32G031G8U6 is built on a 90nm process technology, enabling low dynamic and static power consumption. It features multiple low-power modes, including Sleep, Stop, and Standby, with typical current consumption as low as 0.4 uA in Standby mode. The device also includes a memory protection unit (MPU) and a single-cycle hardware multiplier, enhancing both safety and performance for real-time control tasks.
Typical applications include sensor hubs, smart home devices, portable medical monitors, and industrial automation controllers. Its rich analog peripherals make it particularly well-suited for signal conditioning and data acquisition systems. The device's low power consumption and wide operating temperature range (-40C to +85C) ensure reliable operation in harsh environments.
When designing with this MCU, ensure proper decoupling of the VDD pins with 100nF capacitors placed close to the device. The VDDA pin should be connected to a clean analog supply, and the VREF+ pin can be tied to VDDA for full-scale ADC reference. For low-power applications, utilize the Stop mode with wake-up from external interrupts to minimize average current consumption.
直接替换替代料： STM32G031G8U6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM32G031G8U6 （相同外形与封装尺寸） ——差异在于 Package, Communication Interfaces, Core, ADC, DMA Channels.
快速对比工具——选择替代料号进行并排对比：
STM32G031G6U6
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.7165 / 个
查看数据手册 →STM32G031G8U6
✅ 直接替换✓ 有现货
$1.38 / 个
查看数据手册 →STM32G031G8U6
✅ 直接替换✓ 有现货
$1.38 / 个
查看数据手册 →LPC812M101JDH16
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
EFM8BB21F16G-A-QFN28
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G031G8U6 最大额定值与电气特性
| Core | ARM Cortex-M0+ |
| Core Frequency | 64 MHz |
| Flash Memory | 64 KB |
| SRAM | 8 KB |
| 封装 | UFQFPN-28 (4x4 mm) |
| 电源电压 | 1.7V to 3.6V |
| ADC Resolution | 12-bit |
| ADC Sampling Rate | 2.5 MSPS |
| DAC Resolution | 12-bit |
| Operational Amplifier | 1 |
| Low-Power RTC | Yes |
| Standby Current | 0.4 uA |
| 工作温度 | -40C to +85C |
| Process Technology | 90nm |
| Communication Interfaces | I2C, SPI, USART |
| Timers | Multiple (including advanced-control) |
| Memory Protection Unit | Yes |
| Hardware Multiplier | Single-cycle |
| RoHS 状态 | Compliant |
STM32G031G8U6 引脚配置
| 引脚 1 | VBAT — Battery backup supply for RTC |
| 引脚 2 | PC14 — GPIO / OSC32_IN |
| 引脚 3 | PC15 — GPIO / OSC32_OUT |
| 引脚 4 | NRST — Reset (active low) |
| 引脚 5 | VDDA — Analog power supply |
| 引脚 6 | PA0 — GPIO / ADC_IN0 |
| 引脚 7 | PA1 — GPIO / ADC_IN1 |
| 引脚 8 | PA2 — GPIO / USART2_TX |
| 引脚 9 | PA3 — GPIO / USART2_RX |
| 引脚 10 | PA4 — GPIO / DAC_OUT |
| 引脚 11 | PA5 — GPIO / SPI1_SCK |
| 引脚 12 | PA6 — GPIO / SPI1_MISO |
| 引脚 13 | PA7 — GPIO / SPI1_MOSI |
| 引脚 14 | PB0 — GPIO / ADC_IN8 |
| 引脚 15 | PB1 — GPIO / ADC_IN9 |
| 引脚 16 | PB2 — GPIO / BOOT1 |
| 引脚 17 | PB10 — GPIO / I2C2_SCL |
| 引脚 18 | PB11 — GPIO / I2C2_SDA |
| 引脚 19 | VSS — Ground |
| 引脚 20 | VDD — Digital power supply |
| 引脚 21 | PA13 — GPIO / SWDIO |
| 引脚 22 | PA14 — GPIO / SWCLK |
| 引脚 23 | PA15 — GPIO / TIM2_CH1 |
| 引脚 24 | PB3 — GPIO / TIM2_CH2 |
| 引脚 25 | PB4 — GPIO / TIM3_CH1 |
| 引脚 26 | PB5 — GPIO / TIM3_CH2 |
| 引脚 27 | PB6 — GPIO / I2C1_SCL |
| 引脚 28 | PB7 — GPIO / I2C1_SDA |
典型应用
STM32G031G8U6 适用于 6 应用s: Sensor Hub, Smart Home Device, Portable Medical Monitor, Industrial Automation Controller, IoT Edge Node, Consumer Electronics.
Sensor Hub
The STM32G031G8U6 is ideal for sensor hubs due to its low power consumption and rich analog peripherals. Its 12-bit ADC with hardware oversampling enables precise sensor data acquisition, while the I2C and SPI interfaces connect to various sensors. The Cortex-M0+ core efficiently processes sensor data, and the low-power modes extend battery life in portable sensor nodes. In a typical sensor hub, the MCU reads temperature, humidity, and motion sensors, aggregates the data, and communicates via I2C or SPI to a central gateway. The wide supply voltage range (1.7V to 3.6V) allows direct battery operation, and the standby current of 0.4 uA ensures minimal power draw when idle. Designers should place decoupling capacitors close to VDD and use the Stop mode with wake-up on sensor interrupts to minimize average current.
推荐
Smart Home Device
The STM32G031G8U6 is well-suited for smart home devices such as smart thermostats, lighting controllers, and security sensors. Its low power consumption and multiple low-power modes enable battery-powered operation for years. The device's communication interfaces (I2C, SPI, USART) allow connectivity with Wi-Fi or BLE modules, while the 12-bit ADC reads analog sensors like thermistors or light sensors. The Cortex-M0+ core provides sufficient processing power for control algorithms and user interface handling. In a smart thermostat, the MCU reads temperature, controls a relay or TRIAC for heating/cooling, and communicates with a cloud server via a Wi-Fi module. The wide operating temperature range (-40C to +85C) ensures reliable operation in various home environments. Designers should utilize the Stop mode with wake-up on external interrupts to minimize power consumption when the device is idle.
推荐
Portable Medical Monitor
The STM32G031G8U6 is suitable for portable medical monitors like pulse oximeters, glucose meters, and ECG monitors. Its low power consumption and compact UFQFPN-28 package make it ideal for wearable devices. The 12-bit ADC with up to 2.5 MSPS sampling rate captures physiological signals with high resolution, while the operational amplifier conditions weak sensor signals. The device's low supply voltage (1.7V to 3.6V) allows operation from a single coin cell battery. In a pulse oximeter, the MCU drives an LED, reads the photodetector signal through the ADC, calculates oxygen saturation, and displays the result on an OLED. The low-power modes extend battery life, and the wide temperature range ensures operation in clinical environments. Designers should ensure proper analog grounding and use the internal reference for accurate ADC measurements.
推荐
Industrial Automation Controller
The STM32G031G8U6 is used in industrial automation controllers for tasks like motor control, process monitoring, and PLCs. Its advanced-control timers generate PWM signals for motor drivers, and the 12-bit ADC reads current and voltage sensors for feedback. The device's robust communication interfaces (USART, SPI, I2C) enable connection to industrial networks like Modbus. The wide operating temperature range (-40C to +85C) and high reliability make it suitable for factory floors. In a motor control application, the MCU generates PWM signals, reads encoder feedback, and implements PID control algorithms. The single-cycle hardware multiplier enhances real-time performance. Designers should use the MPU for safety-critical applications and ensure proper decoupling for noise immunity in industrial environments.
推荐
IoT Edge Node
The STM32G031G8U6 is an excellent choice for IoT edge nodes that collect data and transmit it to the cloud. Its low power consumption and multiple low-power modes enable battery-powered operation for extended periods. The device's communication interfaces (I2C, SPI, USART) connect to sensors and wireless modules like LoRa or BLE. The 12-bit ADC reads analog sensors, and the Cortex-M0+ core processes data locally to reduce cloud communication. In a typical IoT edge node, the MCU wakes up periodically, reads sensors, processes data, and transmits it via a LoRa module. The standby current of 0.4 uA ensures minimal power draw between transmissions. Designers should utilize the Stop mode with wake-up on RTC or external interrupts to achieve long battery life.
推荐
Consumer Electronics
The STM32G031G8U6 is used in consumer electronics like remote controls, toys, and small appliances. Its low cost and compact package make it ideal for high-volume products. The device's rich peripheral set includes timers for PWM dimming, ADC for touch sensing, and communication interfaces for connectivity. The wide supply voltage range (1.7V to 3.6V) allows operation from two AA batteries. In a remote control, the MCU scans keypad inputs, encodes IR signals, and transmits them via an IR LED. The low-power modes extend battery life, and the small footprint reduces PCB size. Designers should use the internal RC oscillator to reduce BOM cost and ensure proper ESD protection on exposed pins.
推荐
推荐产品汇总
工程参考数据： STM32G031G8U6 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM32G031G6U6 | LPC812M101JDH16 | EFM8BB21F16G-A-QFN28 |
|---|---|---|---|---|
| Package | UFQFPN-28 | UFQFPN-28 | UFQFPN-28 | QFN-28 |
| Brand | STMicroelectronics | STMicroelectronics | NXP Semiconductors | Silicon Labs |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | 8051 |
| Core Frequency | 64 MHz | 64 MHz | 30 MHz | 50 MHz |
| Flash Memory | 64 KB | 32 KB | 16 KB | 16 KB |
| SRAM | 8 KB | 8 KB | 4 KB | 2 KB |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit |
| Supply Voltage | 1.7V to 3.6V | 1.7V to 3.6V | 1.8V to 3.6V | 2.2V to 3.6V |
关键差异点
- Higher Flash memory (64 KB) compared to alternatives （对比 LPC812M101JDH16)
- Wider supply voltage range (1.7V to 3.6V) （对比 EFM8BB21F16G-A-QFN28)
- Higher core frequency (64 MHz) （对比 LPC812M101JDH16)
设计说明
Decouple each VDD pin with a 100nF ceramic capacitor placed as close as possible to the pin. Additionally, use a 4.7uF capacitor on the main VDD rail. For VDDA, connect a 1uF capacitor to ground and ensure a clean analog supply. If VREF+ is used, connect it to VDDA for full-scale ADC reference.
For the UFQFPN-28 package, ensure the exposed pad (EP) is soldered to a ground plane for thermal and electrical performance. Use a 0.3mm via array under the pad for heat dissipation. Keep high-speed traces short and avoid routing under the crystal oscillator area.
Do not leave the NRST pin floating; connect a 100nF capacitor to ground and a 10k ohm pull-up resistor to VDD. For low-power applications, configure unused GPIOs as analog inputs to avoid leakage. Ensure the BOOT0 pin is properly set to boot from Flash (tied to GND).
合规信息
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified - this is a general-purpose MCU.
