Overview
The STM32L071CBT7 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 series. It is based on the high-performance Arm Cortex-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. This microcontroller is designed for applications requiring high power efficiency and a wide range of performance capabilities. It features an extensive set of peripherals and enhanced I/Os, making it suitable for various IoT, smart home, and industrial control applications.
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 |
| Operating Temperature | -40°C to 125°C |
| Package | LQFP 48 (7x7x1.4 mm) |
| Clock Sources | 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC, internal high-speed and 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 16-bit and basic timers, low-power timer, RTC, and watchdogs |
| Analog Features | 12-bit ADC with hardware oversampling, 2 ultra-low-power comparators |
| I/Os | Up to 84 fast I/Os (78 I/Os 5V tolerant) |
Key Features
- Ultra-low-power platform with various low-power modes (Standby, Stop, and Sleep modes) and low current consumption (e.g., 0.29 µA in Standby mode with 3 wakeup pins).
- High-performance Arm Cortex-M0+ core with a maximum frequency of 32 MHz and 0.95 DMIPS/MHz efficiency.
- Extensive range of enhanced I/Os and peripherals, including up to 84 fast I/Os and 7-channel DMA controller.
- Rich analog peripherals such as a 12-bit ADC with hardware oversampling and two ultra-low-power comparators.
- Advanced communication interfaces including USART, I2C, SPI, and I2S.
- Internal voltage adaptation and multiple clock sources for flexible operation.
- Ultra-safe, low-power BOR (brownout reset) and programmable voltage detector (PVD).
- Pre-programmed bootloader and serial wire debug support for development convenience.
Applications
- Internet of Things (IoT) devices requiring low power consumption and high performance.
- Smart home appliances and automation systems.
- Industrial control and automation systems.
- Low-power sensor nodes and data loggers.
- Wearable devices and health monitoring systems.
Q & A
- What is the core architecture of the STM32L071CBT7?
The STM32L071CBT7 is based on the Arm Cortex-M0+ 32-bit RISC core.
- What is the maximum operating frequency of the STM32L071CBT7?
The maximum operating frequency is up to 32 MHz.
- What are the power supply voltage ranges for the STM32L071CBT7?
The power supply voltage ranges from 1.65 V to 3.6 V.
- What are the operating temperature ranges for the STM32L071CBT7?
The operating temperature ranges from -40°C to 125°C.
- What types of communication interfaces are available on the STM32L071CBT7?
The microcontroller features up to 3 I2Cs, 2 SPIs, 1 I2S, 4 USARTs, and 1 low-power UART (LPUART).
- What are the key analog features of the STM32L071CBT7?
The key analog features include a 12-bit ADC with hardware oversampling and two ultra-low-power comparators.
- How many I/Os does the STM32L071CBT7 have?
The microcontroller has up to 84 fast I/Os, with 78 I/Os being 5V tolerant.
- What are the low-power modes available on the STM32L071CBT7?
The microcontroller supports various low-power modes including Standby, Stop, and Sleep modes.
- Is the STM32L071CBT7 RoHS compliant?
- What is the package type of the STM32L071CBT7?
The package type is LQFP 48 (7x7x1.4 mm).
