Overview
The STM32L031F4P3, produced by STMicroelectronics, is part of the ultra-low-power STM32L031x4/6 family of microcontrollers. This device incorporates the high-performance ARM® Cortex®-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. It is designed for high power efficiency, making it suitable for a wide range of low-power applications. The STM32L031F4P3 features high-speed embedded memories, including up to 32 Kbytes of Flash program memory, 8 Kbytes of RAM, and 1 Kbyte of data EEPROM. Additionally, it includes an extensive range of enhanced I/Os and peripherals, such as analog features, timers, and communication interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | ARM® 32-bit Cortex®-M0+ |
| Frequency | Up to 32 MHz |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 to 125 °C |
| Low-Power Modes | 0.25 μA Standby mode (2 wakeup pins), 0.38 μA Stop mode (16 wakeup lines), 0.68 μA Stop mode + RTC + 8 KB RAM retention |
| Current Consumption in Run Mode | Down to 76 μA/MHz |
| Wakeup Time | 5 μs (from Flash memory) |
| ADC Conversion Current | 41 μA at 10 ksps |
| Memories | Up to 32 KB Flash, 8 KB RAM, 1 KB data EEPROM |
| Communication Interfaces | 1x USART, 1x UART (low power), 1x SPI, 1x I2C |
| Timers | 8 timers including 1x 16-bit with up to 4 channels, 2x 16-bit with up to 2 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC, and 2x watchdogs |
| Package | TSSOP-20 |
Key Features
- Ultra-low-power platform with multiple low-power modes (Standby, Stop, and Stop with RTC + RAM retention)
- High-performance ARM® Cortex®-M0+ 32-bit RISC core
- High-speed embedded memories: up to 32 KB Flash, 8 KB RAM, and 1 KB data EEPROM
- Rich analog peripherals: 12-bit ADC with hardware oversampling, two ultra-low-power comparators
- Multiple timers: general-purpose timers, low-power timer, SysTick, RTC, and watchdogs
- Advanced communication interfaces: USART, SPI, I2C, and low-power UART
- Internal and external clock sources: crystal oscillators, internal RC oscillators, and PLL for CPU clock
- Pre-programmed bootloader and serial wire debug support
- Up to 38 fast I/Os (31 I/Os 5V tolerant)
- ECOPACK®2 compliant packages
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 STM32L031F4P3?
The STM32L031F4P3 is based on the ARM® 32-bit Cortex®-M0+ RISC core.
- What is the operating voltage range of the STM32L031F4P3?
The operating voltage range is from 1.65 V to 3.6 V.
- What are the low-power modes available on the STM32L031F4P3?
The device features Standby, Stop, and Stop with RTC + RAM retention modes.
- What is the current consumption in Run mode?
The current consumption in Run mode is down to 76 μA/MHz.
- What are the communication interfaces available on the STM32L031F4P3?
The device includes USART, SPI, I2C, and a low-power UART.
- What types of timers are available on the STM32L031F4P3?
The device includes general-purpose timers, a low-power timer, SysTick, RTC, and two watchdogs.
- Does the STM32L031F4P3 support serial wire debug?
- What is the package type of the STM32L031F4P3?
The package type is TSSOP-20.
- Is the STM32L031F4P3 RoHS compliant?
- What are some typical applications for the STM32L031F4P3?
Typical applications include low-power IoT devices, portable and battery-powered devices, industrial automation, medical devices, smart home systems, and automotive systems.
