Overview
The STM32L072RBT6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 series. It integrates the high-performance Arm Cortex-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. This MCU combines the benefits of low power consumption with advanced peripherals and communication interfaces. It features up to 192 Kbytes of Flash memory, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM, along with a range of analog and digital peripherals. The device is designed for applications requiring high power efficiency and is available in various package options, including LQFP and UFBGA packages.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M0+ |
| 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 | 1.65 V to 3.6 V |
| Temperature Range | -40 °C to +125 °C |
| Low-Power Modes | Standby mode: 0.29 µA, Stop mode: 0.43 µA, Stop mode + RTC + 20-Kbyte RAM retention: 0.86 µA |
| ADC | 12-bit, 1.14 Msps, up to 16 channels |
| DACs | 2 x 12-bit channel DACs with output buffers |
| Comparators | 2 ultra-low-power comparators with window mode and wake-up capability |
| Capacitive Sensing Channels | Up to 24 channels supporting touchkey, linear, and rotary touch sensors |
| Communication Interfaces | USB 2.0 crystal-less, 4x USART, 1x UART (low power), up to 6x SPI, 3x I2C |
| Timers | 11 timers including 16-bit, ultra-low-power, SysTick, RTC, and watchdogs |
Key Features
- Ultra-low-power platform with multiple power-saving modes.
- High-performance Arm Cortex-M0+ core with a maximum frequency of 32 MHz.
- Rich set of analog peripherals including a 12-bit ADC, 2 x 12-bit DACs, and ultra-low-power comparators.
- Extensive range of communication interfaces: USB 2.0 crystal-less, USART, UART, SPI, and I2C.
- Up to 24 capacitive sensing channels for touch sensing functionality.
- Internal voltage adaptation and multiple clock sources.
- Pre-programmed bootloader and serial wire debug support.
- True RNG and firewall protection for enhanced security.
Applications
The STM32L072RBT6 is suitable for a wide range of applications that require low power consumption and high performance. These include:
- IoT devices and smart home appliances.
- Wearable devices and health monitors.
- Industrial automation and control systems.
- Automotive systems, especially those requiring low power and high reliability.
- Consumer electronics such as remote controls and gaming devices.
Q & A
- What is the core architecture of the STM32L072RBT6?
The STM32L072RBT6 is based on the Arm 32-bit Cortex-M0+ core.
- What is the maximum frequency of the STM32L072RBT6?
The maximum frequency is up to 32 MHz.
- What are the memory specifications of the STM32L072RBT6?
It features up to 192 Kbytes of Flash memory, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM.
- What are the power supply and temperature range of the STM32L072RBT6?
The power supply range is from 1.65 V to 3.6 V, and the temperature range is from -40 °C to +125 °C.
- What are the low-power modes available in the STM32L072RBT6?
The device supports Standby mode (0.29 µA), Stop mode (0.43 µA), and Stop mode + RTC + 20-Kbyte RAM retention (0.86 µA).
- What analog peripherals are available on the STM32L072RBT6?
The device includes a 12-bit ADC, 2 x 12-bit DACs, and 2 ultra-low-power comparators.
- What communication interfaces does the STM32L072RBT6 support?
The device supports USB 2.0 crystal-less, USART, UART, SPI, and I2C interfaces.
- How many capacitive sensing channels does the STM32L072RBT6 have?
It supports up to 24 capacitive sensing channels.
- What security features are included in the STM32L072RBT6?
The device includes true RNG and firewall protection for enhanced security.
- What development tools and support are available for the STM32L072RBT6?
The device supports serial wire debug and has a pre-programmed bootloader.
- What are some typical applications for the STM32L072RBT6?
Typical applications include IoT devices, wearable devices, industrial automation, automotive systems, and consumer electronics.
