Overview
The STM32L031G6U7 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L031x4/6 family. It features the high-performance ARM® Cortex®-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. This MCU is designed for high power efficiency and includes various low-power modes, making it suitable for a wide range of applications requiring minimal energy consumption.
The device comes with 32 Kbytes of Flash program memory, 1 Kbyte of data EEPROM, and 8 Kbytes of RAM. It also includes an extensive range of enhanced I/Os and peripherals, such as a 12-bit ADC with hardware oversampling, two ultra-low-power comparators, and multiple timers including a low-power timer (LPTIM) and a real-time clock (RTC).
The STM32L031G6U7 supports several communication interfaces, including I2C, SPI, USART, and a low-power UART (LPUART). It operates from a 1.65 to 3.6 V power supply and is available in the -40 to +125 °C temperature range.
Key Specifications
| Parameter | Description |
|---|---|
| Core | ARM® 32-bit Cortex®-M0+ |
| Maximum Frequency | Up to 32 MHz |
| Program Memory | 32 Kbytes Flash |
| Data EEPROM | 1 Kbyte |
| RAM | 8 Kbytes |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 to +125 °C |
| Low-Power Modes | Standby: 0.25 μA, Stop: 0.38 μA, Stop + RTC + 8 KB RAM retention: 0.68 μA |
| ADC | 12-bit with hardware oversampling |
| Comparators | 2 ultra-low-power comparators |
| Timers | 3 general-purpose 16-bit timers, 1 low-power timer (LPTIM), 1 RTC |
| Communication Interfaces | I2C, SPI, USART, low-power UART (LPUART) |
| Package | UFQFPN-28 (4x4) |
Key Features
- Ultra-low-power platform with multiple low-power modes (Standby, Stop, etc.)
- High-performance ARM® Cortex®-M0+ 32-bit RISC core operating at up to 32 MHz
- High-speed embedded memories: 32 Kbytes Flash, 1 Kbyte data EEPROM, 8 Kbytes RAM
- Extensive range of enhanced I/Os and peripherals
- 12-bit ADC with hardware oversampling and two ultra-low-power comparators
- Multiple timers: 3 general-purpose 16-bit timers, 1 low-power timer (LPTIM), 1 RTC
- Standard and advanced communication interfaces: I2C, SPI, USART, low-power UART (LPUART)
- Real-time clock and backup registers that remain powered in Standby mode
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
- Programmable voltage detector (PVD) and ultralow power POR/PDR
- Various clock sources including crystal oscillators and internal RC oscillators
Applications
- Low-power IoT devices and sensors
- Portable and battery-powered devices
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Smart home and building automation systems
- Automotive systems where low power is critical
Q & A
- What is the core architecture of the STM32L031G6U7?
The STM32L031G6U7 features the ARM® 32-bit Cortex®-M0+ RISC core.
- What is the maximum operating frequency of the STM32L031G6U7?
The maximum operating frequency is up to 32 MHz.
- What are the power supply and temperature ranges for the STM32L031G6U7?
The power supply range is 1.65 V to 3.6 V, and the temperature range is -40 to +125 °C.
- What low-power modes are available on the STM32L031G6U7?
The device supports Standby, Stop, and Stop + RTC + 8 KB RAM retention modes, with current consumptions of 0.25 μA, 0.38 μA, and 0.68 μA respectively.
- What communication interfaces does the STM32L031G6U7 support?
The device supports I2C, SPI, USART, and a low-power UART (LPUART).
- What is the package type of the STM32L031G6U7?
The package type is UFQFPN-28 (4x4).
- What are the key peripherals included in the STM32L031G6U7?
The device includes a 12-bit ADC, two ultra-low-power comparators, multiple timers (including LPTIM and RTC), and watchdogs.
- How much Flash, EEPROM, and RAM does the STM32L031G6U7 have?
The device has 32 Kbytes of Flash, 1 Kbyte of data EEPROM, and 8 Kbytes of RAM.
- What are some typical applications for the STM32L031G6U7?
Typical applications include low-power IoT devices, portable and battery-powered devices, industrial automation, medical devices, smart home systems, and automotive systems.
- Does the STM32L031G6U7 support any advanced safety features?
Yes, it includes ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds and programmable voltage detector (PVD).
