Overview
The STM32L071VBT6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L071xx series. 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 memory protection unit (MPU), high-speed embedded memories, and an extensive range of enhanced I/Os and peripherals.
The device is suitable for a wide range of applications requiring low power consumption and high performance. It operates from a 1.8 to 3.6 V power supply and is available in the -40 to +125 °C temperature range, making it versatile for various environmental conditions.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm 32-bit Cortex-M0+ with MPU |
| Frequency | Up to 32 MHz |
| Power Supply | 1.8 V to 3.6 V (down to 1.65 V at power down) |
| Temperature Range | -40 °C to +125 °C |
| 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 |
| I/Os | Up to 84 fast I/Os (78 I/Os 5V tolerant) |
| ADC | 12-bit ADC with hardware oversampling, up to 16 channels |
| Comparators | 2 ultra-low-power comparators |
| Timers | 11 timers including 4 general-purpose 16-bit timers, 2 basic timers, 1 low-power timer, 1 RTC, and 2 watchdogs |
| Communication Interfaces | Up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, 1 low-power UART (LPUART) |
| Package | LQFP 100 14x14x1.4 mm |
Key Features
- Ultra-low-power platform with multiple low-power modes (Standby, Stop, etc.)
- High power efficiency with internal voltage adaptation and several clock sources
- High-speed embedded memories including Flash, RAM, and data EEPROM
- Extensive range of enhanced I/Os and peripherals
- Rich analog peripherals including 12-bit ADC, ultra-low-power comparators, and timers
- Standard and advanced communication interfaces (I2C, SPI, I2S, USART, 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 ultra-low-power POR/PDR
- Serial wire debug supported and pre-programmed bootloader
Applications
The STM32L071VBT6 is suitable for a variety of low-power applications, including:
- IoT devices and smart home appliances
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Portable and battery-powered devices
- Automotive systems and sensors
- Energy harvesting and wireless sensor networks
Q & A
- What is the core architecture of the STM32L071VBT6?
The STM32L071VBT6 features an Arm 32-bit Cortex-M0+ core with a memory protection unit (MPU).
- What is the operating voltage range of the STM32L071VBT6?
The device operates from a 1.8 V to 3.6 V power supply (down to 1.65 V at power down).
- What are the key memory specifications of the STM32L071VBT6?
The device includes up to 192 Kbytes of Flash memory, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM.
- What are the low-power modes available on the STM32L071VBT6?
The device features multiple low-power modes including Standby, Stop, and low-power Run modes.
- What analog peripherals are available on the STM32L071VBT6?
The device includes a 12-bit ADC, two ultra-low-power comparators, and several timers.
- What communication interfaces does the STM32L071VBT6 support?
The device supports up to three I2Cs, two SPIs, one I2S, four USARTs, and one low-power UART (LPUART).
- What is the temperature range for the STM32L071VBT6?
The device operates in the -40 °C to +125 °C temperature range.
- What package options are available for the STM32L071VBT6?
The device is available in an LQFP 100 14x14x1.4 mm package.
- Does the STM32L071VBT6 support serial wire debug?
Yes, the device supports serial wire debug.
- What is the purpose of the backup registers in the STM32L071VBT6?
The backup registers remain powered in Standby mode to preserve critical data.
