Overview
The STM32L071KBU3TR is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L071xx family. It incorporates the high-performance Arm Cortex-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. This microcontroller is designed for high power efficiency and features a wide range of enhanced I/Os and peripherals. It is suitable for a variety of low-power applications, offering multiple power-saving modes and a comprehensive set of analog and digital peripherals.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M0+ with MPU |
| Frequency | Up to 32 MHz |
| Flash Memory | Up to 192 Kbytes with ECC (2 banks with read-while-write capability) |
| RAM | 20 Kbytes |
| Data EEPROM | 6 Kbytes with ECC |
| Backup Register | 20 bytes |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 to 125 °C |
| Standby Mode Current | 0.29 µA (3 wakeup pins) |
| Stop Mode Current | 0.43 µA (16 wakeup lines) |
| Stop Mode + RTC + RAM Retention Current | 0.86 µA |
| Run Mode Current | Down to 93 µA/MHz |
| Wakeup Time | 5 µs (from Flash memory) |
| ADC Conversion Current | 41 µA at 10 ksps |
| I/Os | Up to 84 fast I/Os (78 I/Os 5V tolerant) |
| Communication Interfaces | Up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, 1 low-power UART |
| Timers | 11 timers including 16-bit, ultra-low-power, SysTick, RTC, and watchdogs |
| Package | UFQFPN 32 5x5x0.55 mm |
Key Features
- Ultra-low-power platform: Optimized for low-power consumption with various power-saving modes.
- High-performance core: Arm 32-bit Cortex-M0+ with MPU, operating up to 32 MHz.
- Rich analog peripherals: 12-bit ADC with hardware oversampling, ultra-low-power comparators, and multiple timers.
- Advanced communication interfaces: Supports USART, I2C, SPI, I2S, and low-power UART.
- Comprehensive clock sources: Includes crystal oscillators, internal RC oscillators, and PLL for CPU clock.
- Development support: Serial wire debug supported and pre-programmed bootloader.
- Reset and supply management: Ultra-safe, low-power BOR, POR/PDR, and programmable voltage detector (PVD).
- ECOPACK2 compliant packages: Environmentally friendly packaging.
Applications
- IoT Devices: Ideal for Internet of Things applications requiring low power consumption.
- Industrial Automation: Suitable for industrial control systems and automation due to its robust peripherals and low power modes.
- Medical Devices: Can be used in medical devices that require high precision and low power consumption.
- Consumer Electronics: Applicable in various consumer electronics such as smart home devices, wearables, and more.
- Automotive Systems: Can be integrated into automotive systems for control and monitoring functions.
Q & A
- What is the core architecture of the STM32L071KBU3TR?
The core architecture is based on the Arm 32-bit Cortex-M0+ with a Memory Protection Unit (MPU).
- What is the maximum frequency of the STM32L071KBU3TR?
The maximum frequency is up to 32 MHz.
- What is the power supply range for the STM32L071KBU3TR?
The power supply range is from 1.65 V to 3.6 V.
- What is the temperature range for the STM32L071KBU3TR?
The temperature range is from -40 to 125 °C.
- What are the key power-saving modes of the STM32L071KBU3TR?
The key power-saving modes include Standby, Stop, and Stop with RTC and RAM retention.
- What types of communication interfaces does the STM32L071KBU3TR support?
The microcontroller supports USART, I2C, SPI, I2S, and low-power UART.
- What is the package type for the STM32L071KBU3TR?
The package type is UFQFPN 32 5x5x0.55 mm.
- Does the STM32L071KBU3TR support serial wire debug?
Yes, it supports serial wire debug.
- What is the current consumption in Standby mode for the STM32L071KBU3TR?
The current consumption in Standby mode is 0.29 µA with 3 wakeup pins.
- What is the ADC conversion current at 10 ksps for the STM32L071KBU3TR?
The ADC conversion current at 10 ksps is 41 µA.
