Overview
The STM32L051R8H6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L051x6/8 series. It features the high-performance Arm® 32-bit Cortex®-M0+ core, operating at a frequency of up to 32 MHz. This MCU is designed for high power efficiency, making it suitable for a wide range of low-power applications. It includes a memory protection unit (MPU), high-speed embedded memories, and an extensive range of enhanced I/Os and peripherals. The device operates from a 1.65 V to 3.6 V power supply and is available in various packages, including TFBGA and LQFP, with a temperature range of -40 to 125 °C.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M0+ with MPU |
| Frequency | Up to 32 MHz |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 to 125 °C |
| Flash Memory | Up to 64 Kbytes with ECC |
| RAM | 8 Kbytes |
| EEPROM | 2 Kbytes with ECC |
| Backup Register | 20 bytes |
| I/Os | Up to 51 fast I/Os (45 I/Os 5V tolerant) |
| ADC | 12-bit, 1.14 Msps, up to 16 channels |
| Comparators | 2 ultra-low-power comparators |
| Timers | 9 timers including 16-bit and ultra-low-power timers |
| Communication Interfaces | 2x USART, 1x UART (low power), up to 4x SPI, 2x I2C, 1x I2S |
| Power Modes | Standby, Stop, and Run modes with low power consumption |
| Wakeup Time | 3.5 µs from RAM, 5 µs from Flash memory |
Key Features
- Ultra-low-power platform: Optimized for low power consumption with various power-saving modes.
- High-performance core: Arm® 32-bit Cortex®-M0+ core with MPU.
- Extensive memory options: Up to 64 Kbytes of Flash memory, 8 Kbytes of RAM, and 2 Kbytes of EEPROM.
- Analog peripherals: 12-bit ADC, 2 ultra-low-power comparators, and a 7-channel DMA controller.
- Communication interfaces: Multiple USART, SPI, I2C, and I2S interfaces.
- Low-power modes: Standby, Stop, and Run modes with low power consumption.
- Fast wakeup times: 3.5 µs from RAM and 5 µs from Flash memory.
- Reset and supply management: Ultra-safe, low-power BOR and programmable voltage detector (PVD).
- Development support: Serial wire debug supported and pre-programmed bootloader.
Applications
The STM32L051R8H6 is suitable for a variety of low-power applications, including:
- IoT devices: Due to its ultra-low power consumption, it is ideal for Internet of Things (IoT) devices that require long battery life.
- Wearable devices: Its low power modes and fast wakeup times make it suitable for wearable devices.
- Industrial automation: It can be used in industrial automation applications where low power and high reliability are crucial.
- Medical devices: The device's low power consumption and robust peripherals make it a good fit for medical devices.
- Consumer electronics: It is also used in various consumer electronics that require efficient power management.
Q & A
- What is the core type of the STM32L051R8H6?
The core type is Arm® 32-bit Cortex®-M0+ with a memory protection unit (MPU).
- What is the operating voltage range of the STM32L051R8H6?
The operating voltage range is from 1.65 V to 3.6 V.
- What are the different power modes available on the STM32L051R8H6?
The device supports Standby, Stop, and Run modes with low power consumption.
- How much Flash memory does the STM32L051R8H6 have?
The device has up to 64 Kbytes of Flash memory with ECC.
- What are the key analog peripherals of the STM32L051R8H6?
The key analog peripherals include a 12-bit ADC, 2 ultra-low-power comparators, and a 7-channel DMA controller.
- What communication interfaces are available on the STM32L051R8H6?
The device features multiple USART, SPI, I2C, and I2S interfaces.
- What is the temperature range of the STM32L051R8H6?
The temperature range is from -40 to 125 °C.
- How fast is the wakeup time from RAM and Flash memory?
The wakeup time is 3.5 µs from RAM and 5 µs from Flash memory.
- Does the STM32L051R8H6 support serial wire debug?
Yes, the device supports serial wire debug.
- What are some typical applications of the STM32L051R8H6?
Typical applications include IoT devices, wearable devices, industrial automation, medical devices, and consumer electronics.
