Overview
The STM32L051R8T6TR is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 series. This 32-bit MCU is based on the Arm® Cortex®-M0+ core and is designed for applications requiring low power consumption and high performance. The device features a wide range of peripherals and interfaces, making it suitable for various embedded systems and IoT applications.
Key Specifications
| Parameter | Value |
|---|---|
| Core | Arm® 32-bit Cortex®-M0+ |
| Flash Memory | Up to 64 KB with ECC |
| SRAM | 8 KB |
| EEPROM | 2 KB with ECC |
| Backup Register | 20 bytes |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40°C to 125°C |
| Standby Mode Current | 0.27 µA (2 wakeup pins) |
| Stop Mode Current | 0.4 µA (16 wakeup lines) |
| Stop Mode + RTC + RAM Retention Current | 0.8 µA |
| Run Mode Current | 88 µA/MHz |
| Wakeup Time from RAM | 3.5 µs |
| Wakeup Time from Flash Memory | 5 µs |
| Clock Sources | 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC, internal 16 MHz RC, internal low-power 37 kHz RC, internal multispeed low-power 65 kHz to 4.2 MHz RC, PLL for CPU clock |
| I/Os | Up to 51 fast I/Os (45 I/Os 5V tolerant) |
| Peripheral Communication Interfaces | 2x USART, 1x UART, up to 4x SPI, 2x I2C |
| Timers | 9 timers including 16-bit timers, ultra-low-power timer, SysTick, RTC, and watchdogs |
Key Features
- Ultra-low-power platform: Features low power modes such as Standby, Stop, and low power run modes to minimize energy consumption.
- Rich Analog Peripherals: Includes a 12-bit ADC with up to 16 channels, and 2 ultra-low-power comparators.
- Multiple Clock Sources: Supports various clock sources including crystal oscillators, internal RC oscillators, and a PLL for CPU clock.
- Peripheral Communication Interfaces: Offers multiple USART, UART, SPI, and I2C interfaces for versatile communication.
- Development Support: Includes a pre-programmed bootloader and supports serial wire debug.
- Memory Protection: Features sector protection against R/W operations and ECC for Flash and EEPROM.
- Reset and Supply Management: Includes ultra-safe low-power BOR, POR/PDR, and programmable voltage detector (PVD).
Applications
- IoT Devices: Suitable for Internet of Things applications due to its low power consumption and rich set of peripherals.
- Industrial Automation: Can be used in industrial automation for control and monitoring systems.
- Consumer Electronics: Ideal for battery-powered consumer electronics requiring low power and high performance.
- Medical Devices: Applicable in medical devices where low power and reliability are critical.
- Automotive Systems: Can be used in automotive systems for various control and monitoring functions.
Q & A
- What is the core architecture of the STM32L051R8T6TR?
The core architecture is based on the Arm® 32-bit Cortex®-M0+.
- What is the range of the power supply for this MCU?
The power supply range is from 1.65 V to 3.6 V.
- What is the temperature range for the STM32L051R8T6TR?
The operating temperature range is from -40°C to 125°C.
- How much current does the MCU consume in Standby mode?
The current consumption in Standby mode is 0.27 µA with 2 wakeup pins.
- What types of clock sources are supported by this MCU?
The MCU supports 1 to 25 MHz crystal oscillators, 32 kHz oscillators for RTC, internal 16 MHz RC, internal low-power 37 kHz RC, and internal multispeed low-power 65 kHz to 4.2 MHz RC, as well as a PLL for CPU clock.
- What are the available peripheral communication interfaces?
The MCU offers 2x USART, 1x UART, up to 4x SPI, and 2x I2C interfaces.
- Does the MCU support any development tools?
Yes, it includes a pre-programmed bootloader and supports serial wire debug.
- What kind of memory protection does the MCU have?
The MCU features sector protection against R/W operations and ECC for Flash and EEPROM.
- What are some typical applications for the STM32L051R8T6TR?
Typical applications include IoT devices, industrial automation, consumer electronics, medical devices, and automotive systems.
- How many I/Os does the MCU have?
The MCU has up to 51 fast I/Os, with 45 I/Os being 5V tolerant.
