Overview
The STM32L051R8T6 is a member of the STM32L051x6/8 family of ultra-low-power microcontrollers from STMicroelectronics. These devices are based on the high-performance Arm Cortex-M0+ 32-bit RISC core, operating at a maximum frequency of 32 MHz. The STM32L051R8T6 is designed to provide high power efficiency and is suitable for a wide range of applications requiring low power consumption.
The device features a comprehensive set of peripherals, including high-speed embedded memories, extensive I/O capabilities, and various communication interfaces. It is particularly notable for its ultra-low-power modes, making it an ideal choice for battery-powered devices and other applications where energy efficiency is crucial.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm 32-bit Cortex-M0+ with MPU |
| Operating Frequency | Up to 32 MHz |
| Power Supply | 1.65 V to 3.6 V (down to 1.65 V at power down) |
| 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 ADC, 1.14 Msps, up to 16 channels |
| Comparators | 2 ultra-low-power comparators |
| Timers | 9 timers including 16-bit, ultra-low-power, and RTC |
| Communication Interfaces | 2x USART, 1x UART (low power), up to 4x SPI, 2x I2C |
| Package | LQFP 64 (10x10x1.4 mm) |
Key Features
- Ultra-low-power platform: Features include 0.27 µA Standby mode, 0.4 µA Stop mode, and 0.8 µA Stop mode + RTC + 8-Kbyte RAM retention.
- High-performance core: Arm 32-bit Cortex-M0+ with MPU, operating up to 32 MHz.
- Rich Analog peripherals: Includes a 12-bit ADC with hardware oversampling, two ultra-low-power comparators, and multiple timers.
- Extensive communication interfaces: Supports USART, SPI, I2C, and a low-power UART.
- Power management: Ultra-safe, low-power BOR, ultra-low-power POR/PDR, and programmable voltage detector (PVD).
- Development support: Serial wire debug supported and pre-programmed bootloader for USART and SPI.
Applications
- Battery-powered devices: Ideal for applications requiring low power consumption, such as smart meters, fitness trackers, and other wearable devices.
- Industrial automation: Suitable for low-power industrial control systems and sensors.
- Medical devices: Can be used in medical devices that require low power consumption and high reliability.
- Consumer electronics: Applicable in various consumer electronics that need efficient power management, such as remote controls and home automation devices.
Q & A
- What is the core architecture of the STM32L051R8T6?
The STM32L051R8T6 is based on the Arm 32-bit Cortex-M0+ core with an MPU.
- What is the operating frequency range of the STM32L051R8T6?
The device operates up to a maximum frequency of 32 MHz.
- What are the power supply and temperature range specifications?
The device operates from 1.65 V to 3.6 V and is functional in the temperature range of -40 to 125 °C.
- How much Flash, RAM, and EEPROM does the STM32L051R8T6 have?
The device features up to 64 Kbytes of Flash memory, 8 Kbytes of RAM, and 2 Kbytes of EEPROM.
- What types of communication interfaces are supported by the STM32L051R8T6?
The device supports USART, SPI, I2C, and a low-power UART.
- What are the key power-saving features of the STM32L051R8T6?
The device features ultra-low-power modes including Standby, Stop, and low-power RTC modes.
- Does the STM32L051R8T6 support any development tools?
Yes, it supports serial wire debug and has a pre-programmed bootloader for USART and SPI.
- What types of timers are available on the STM32L051R8T6?
The device includes multiple timers such as 16-bit timers, an ultra-low-power timer, an RTC, and watchdog timers.
- What is the package type of the STM32L051R8T6?
The device is available in an LQFP 64 package (10x10x1.4 mm).
- Is the STM32L051R8T6 suitable for battery-powered devices?
Yes, it is highly suitable due to its ultra-low-power consumption features.
- What is the purpose of the backup register in the STM32L051R8T6?
The backup register remains powered in Standby mode, allowing the device to retain critical data even when the main power is off.
