Overview
The STM32L071VBT6TR 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 MCU is designed for high power efficiency, making it suitable for a wide range of low-power applications. It features an extensive set of enhanced I/Os and peripherals, including high-speed embedded memories and advanced communication interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M0+ with MPU |
| Frequency | Up to 32 MHz |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 to 125 °C |
| Flash Memory | Up to 192 Kbytes with ECC (2 banks with read-while-write capability) |
| RAM | 20 Kbytes |
| EEPROM | 6 Kbytes with ECC |
| Backup Register | 20 bytes |
| I/Os | Up to 84 fast I/Os (78 I/Os 5V tolerant) |
| Clock Sources | 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC, internal 16 MHz RC, internal low-power 37 kHz RC, internal multispeed low-power 65 kHz to 4.2 MHz RC |
| Communication Interfaces | Up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, 1 low-power UART (LPUART) |
| Timers | 11 timers including 16-bit timers, ultra-low-power timer, SysTick, RTC, and watchdogs |
| ADC | 12-bit ADC with 1.14 Msps up to 16 channels |
| Comparators | 2 ultra-low-power comparators with window mode and wake-up capability |
| Package | LQFP 100 14x14x1.4 mm |
Key Features
- Ultra-low-power platform with various power-saving modes (Standby, Stop, and Run modes)
- High power efficiency with down to 93 µA/MHz in Run mode and 0.29 µA in Standby mode
- Fast wakeup time of 5 µs from Flash memory
- Rich analog peripherals including 12-bit ADC, ultra-low-power comparators, and DMA controller
- Advanced communication interfaces such as USART, I2C, SPI, and I2S
- Multiple timers and watchdogs for versatile application support
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds and programmable voltage detector (PVD)
- Pre-programmed bootloader and serial wire debug support for development
- All packages are ECOPACK2 compliant
Applications
The STM32L071VBT6TR is suitable for a wide range of low-power applications, including:
- IoT devices and smart sensors
- Wearable electronics and health monitoring devices
- Industrial automation and control systems
- Consumer electronics requiring low power consumption
- Automotive systems, especially those requiring low power and high reliability
Q & A
- What is the core architecture of the STM32L071VBT6TR?
The core architecture is based on the Arm 32-bit Cortex-M0+ with a Memory Protection Unit (MPU).
- What is the operating voltage range of the STM32L071VBT6TR?
The operating voltage range is from 1.65 V to 3.6 V.
- What are the key power-saving modes of the STM32L071VBT6TR?
The key power-saving modes include Standby, Stop, and Run modes, with current consumption as low as 0.29 µA in Standby mode.
- What types of communication interfaces are available on the STM32L071VBT6TR?
The MCU supports up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, and 1 low-power UART (LPUART).
- What is the maximum frequency of the STM32L071VBT6TR?
The maximum frequency is up to 32 MHz.
- What is the temperature range of the STM32L071VBT6TR?
The operating temperature range is from -40 to 125 °C.
- What types of timers are available on the STM32L071VBT6TR?
The MCU includes 11 timers, including 16-bit timers, an ultra-low-power timer, SysTick, RTC, and watchdogs.
- Does the STM32L071VBT6TR support serial wire debug?
- What is the package type of the STM32L071VBT6TR?
The package type is LQFP 100 14x14x1.4 mm.
- Is the STM32L071VBT6TR ECOPACK2 compliant?
- What is the typical current consumption for 12-bit ADC conversion at 10 ksps?
The typical current consumption is 41 µA.
