Overview
The STM32L071CZT7 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L071xx series. 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 and is suitable for a wide range of applications requiring low power consumption.
It includes extensive memory options such as up to 192 Kbytes of Flash program memory, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM. The device also offers a variety of analog and digital peripherals, making it versatile for various use cases.
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 |
| EEPROM | 6 Kbytes with ECC |
| Backup Register | 20 bytes |
| Power Supply | 1.8 to 3.6 V (down to 1.65 V at power down) |
| Temperature Range | -40 to +125 °C |
| I/Os | Up to 84 fast I/Os (78 I/Os 5V tolerant) |
| ADC | 12-bit ADC with 1.14 Msps up to 16 channels |
| Comparators | 2 ultra-low-power comparators |
| Timers | 4 general-purpose 16-bit timers, 2 basic timers, 1 low-power timer (LPTIM), 1 RTC, 1 SysTick |
| Communication Interfaces | Up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, 1 low-power UART (LPUART) |
| Package | LQFP 48 7x7x1.4 mm |
Key Features
- Ultra-Low Power Consumption: The STM32L071CZT7 operates in various low-power modes, including Standby, Stop, and Sleep modes, with current consumption as low as 0.29 µA in Standby mode.
- Rich Analog Peripherals: Includes a 12-bit ADC with hardware oversampling, two ultra-low-power comparators, and support for capacitive sensing channels.
- Extensive Communication Interfaces: Supports up to three I2Cs, two SPIs, one I2S, four USARTs, and a low-power UART.
- Advanced Clock Management: Features multiple internal and external clock sources, including a high-speed internal 16 MHz factory-trimmed RC oscillator and a PLL for CPU clock.
- Development Support: Includes a pre-programmed bootloader and supports serial wire debug.
- Memory Protection Unit (MPU): Enhances security and reliability by providing memory protection.
- Backup Registers and Real-Time Clock (RTC): Includes backup registers that remain powered in Standby mode and an RTC for timekeeping.
Applications
- IoT Devices: Ideal for Internet of Things (IoT) applications requiring low power consumption and high performance.
- Industrial Automation: Suitable for industrial control systems, sensors, and actuators due to its robust and reliable design.
- Medical Devices: Can be used in medical devices that require low power consumption and precise analog measurements.
- Consumer Electronics: Applicable in various consumer electronics such as smart home devices, wearables, and portable electronics.
- Automotive Systems: Used in automotive systems for its reliability and low power consumption, especially in battery-powered devices.
Q & A
- What is the core architecture of the STM32L071CZT7?
The STM32L071CZT7 features the Arm Cortex-M0+ 32-bit RISC core.
- What is the maximum operating frequency of the STM32L071CZT7?
The maximum operating frequency is up to 32 MHz.
- What are the memory options available on the STM32L071CZT7?
The device includes up to 192 Kbytes of Flash memory, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM.
- What is the power supply range for the STM32L071CZT7?
The power supply range is from 1.8 to 3.6 V (down to 1.65 V at power down).
- What are the low-power modes available on the STM32L071CZT7?
The device supports various low-power modes including Standby, Stop, and Sleep modes.
- Does the STM32L071CZT7 support serial wire debug?
Yes, it supports serial wire debug for development purposes.
- What are the communication interfaces available on the STM32L071CZT7?
The device supports up to three I2Cs, two SPIs, one I2S, four USARTs, and a low-power UART.
- What is the temperature range for the STM32L071CZT7?
The operating temperature range is from -40 to +125 °C.
- Does the STM32L071CZT7 have a real-time clock (RTC)?
Yes, it includes an RTC for timekeeping.
- What is the package type for the STM32L071CZT7?
The package type is LQFP 48 7x7x1.4 mm.
