Overview
The STM32L071KBU3 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, including IoT and industrial devices, due to its comprehensive set of power-saving modes and low-power consumption characteristics.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm Cortex-M0+ 32-bit RISC core |
| Operating 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 |
| Supply Voltage | 1.65 V to 3.6 V (down to 1.65 V at power down) |
| Operating Temperature | -40°C to 125°C |
| 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 low-power RC oscillators, PLL for CPU clock |
| Communication Interfaces | Up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, 1 low-power UART (LPUART) |
| Timers | 11 timers including 2x 16-bit with up to 4 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC, 2x 16-bit basic, and 2x watchdogs |
| Analog Peripherals | 12-bit ADC with 1.14 Msps up to 16 channels, 2 ultra-low-power comparators |
| Package | UFQFPN 32 5x5x0.55 mm |
Key Features
- Ultra-low-power platform with multiple power-saving modes: Standby mode (0.29 µA), Stop mode (0.43 µA), and Stop mode + RTC + 20 KB RAM retention (0.86 µA)
- High-speed embedded memories: up to 192 Kbytes of Flash, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM
- Rich analog peripherals: 12-bit ADC, 2 ultra-low-power comparators, and a 7-channel DMA controller
- Extensive range of communication interfaces: up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, and 1 low-power UART
- Internal voltage adaptation and several low-power modes for high power efficiency
- Real-time clock and backup registers that remain powered in Standby mode
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds and programmable voltage detector (PVD)
- Serial wire debug supported and pre-programmed bootloader
Applications
The STM32L071KBU3 is ideal for various low-power applications, including:
- Internet of Things (IoT) devices
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics with battery-powered operation
- Sensor networks and smart home devices
Q & A
- What is the core architecture of the STM32L071KBU3?
The STM32L071KBU3 is based on the Arm Cortex-M0+ 32-bit RISC core. - What is the maximum operating frequency of the STM32L071KBU3?
The maximum operating frequency is up to 32 MHz. - What are the power supply voltage ranges for the STM32L071KBU3?
The power supply voltage ranges from 1.65 V to 3.6 V. - What are the key analog peripherals of the STM32L071KBU3?
The key analog peripherals include a 12-bit ADC with up to 16 channels and 2 ultra-low-power comparators. - How many communication interfaces does the STM32L071KBU3 support?
The STM32L071KBU3 supports up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, and 1 low-power UART. - What are the power-saving modes available on the STM32L071KBU3?
The available power-saving modes include Standby mode, Stop mode, and Stop mode + RTC + 20 KB RAM retention. - What is the operating temperature range of the STM32L071KBU3?
The operating temperature range is from -40°C to 125°C. - Does the STM32L071KBU3 support serial wire debug?
Yes, the STM32L071KBU3 supports serial wire debug. - What is the package type of the STM32L071KBU3?
The package type is UFQFPN 32 5x5x0.55 mm. - Is the STM32L071KBU3 RoHS compliant?
Yes, the STM32L071KBU3 is RoHS compliant and comes in ECOPACK2 packages.
