Overview
The STM32L071KZU3 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L071xx family. It features 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, making it suitable for a wide range of applications requiring low power consumption. It includes extensive memory options, enhanced I/Os, and a variety of peripherals to support diverse functionalities.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M0+ with MPU |
| 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 |
| Power Supply | 1.65 V to 3.6 V (down to 1.65 V at power down) |
| Temperature Range | -40 to +125 °C |
| Low-Power Modes | Standby: 0.29 µA (3 wakeup pins), Stop: 0.43 µA (16 wakeup lines), Stop + RTC + RAM retention: 0.86 µA |
| Wakeup Time | 5 µs from Flash memory |
| ADC Conversion | 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 LPUART |
| Timers | 11 timers including 16-bit timers, ultra-low-power timer, SysTick, RTC, and watchdogs |
| Package | UFQFPN 32 5x5x0.55 mm |
Key Features
- Ultra-low-power platform: Optimized for low power consumption with various low-power modes.
- High-performance core: Arm 32-bit Cortex-M0+ with MPU, operating up to 32 MHz.
- Enhanced memories: Up to 192 Kbytes of Flash memory, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM.
- Analog peripherals: 12-bit ADC with hardware oversampling, two ultra-low-power comparators, and multiple timers.
- Communication interfaces: Multiple USARTs, SPIs, I2Cs, and an I2S interface.
- Power management: Ultra-safe low-power BOR, ultra-low-power POR/PDR, and programmable voltage detector (PVD).
- Clock sources: Various internal and external clock sources including crystal oscillators and internal RC oscillators.
- Development support: Serial wire debug supported and pre-programmed bootloader.
- Environmental robustness: Operating temperature range from -40 to +125 °C.
Applications
The STM32L071KZU3 is suitable for a variety of applications that require low power consumption and high performance. These include:
- IoT devices: Ideal for Internet of Things applications where power efficiency is crucial.
- Industrial automation: Used in industrial control systems, sensors, and actuators.
- Medical devices: Suitable for medical equipment that requires low power and high reliability.
- Consumer electronics: Used in battery-powered devices such as wearables, smart home devices, and portable electronics.
- Automotive systems: Can be used in automotive applications requiring low power and robust performance.
Q & A
- What is the core architecture of the STM32L071KZU3?
The core architecture is based on the Arm 32-bit Cortex-M0+ with a Memory Protection Unit (MPU).
- What is the maximum operating frequency of the STM32L071KZU3?
The maximum operating frequency is up to 32 MHz.
- What are the power supply voltage ranges for the STM32L071KZU3?
The power supply voltage ranges from 1.65 V to 3.6 V.
- What are the low-power modes available in the STM32L071KZU3?
The available low-power modes include Standby, Stop, and Stop with RTC and RAM retention.
- How many communication interfaces does the STM32L071KZU3 support?
The microcontroller supports up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, and 1 LPUART.
- What is the temperature range for the STM32L071KZU3?
The operating temperature range is from -40 to +125 °C.
- What types of timers are available in the STM32L071KZU3?
The microcontroller includes 11 timers, including 16-bit timers, an ultra-low-power timer, SysTick, RTC, and watchdogs.
- Does the STM32L071KZU3 support serial wire debug?
Yes, it supports serial wire debug.
- What is the package type for the STM32L071KZU3?
The package type is UFQFPN 32 5x5x0.55 mm.
- What are the key analog peripherals of the STM32L071KZU3?
The key analog peripherals include a 12-bit ADC with hardware oversampling and two ultra-low-power comparators.
