Overview
The STM32L051C8T7TR is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L051x8 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 a comprehensive set of power-saving modes, making it ideal for low-power applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M0+ with MPU |
| Operating Frequency | Up to 32 MHz |
| Flash Memory | Up to 64 Kbytes with ECC |
| RAM | 8 Kbytes |
| Data EEPROM | 2 Kbytes with ECC |
| Backup Register | 20 bytes |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 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 | 5 µs |
| I/Os | Up to 51 fast I/Os (45 I/Os 5V tolerant) |
| Clock Sources | 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC, internal high-speed and low-power RC oscillators |
| Communication Interfaces | 2x USART, 1x UART (low power), up to 4x SPI, 2x I2C, 1x I2S |
| Analog Peripherals | 12-bit ADC, 2x ultra-low-power comparators, 9x timers including LPTIM and RTC |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, and low-power Run modes)
- High-performance Arm Cortex-M0+ 32-bit RISC core with MPU
- High-speed embedded memories: up to 64 Kbytes of Flash, 8 Kbytes of RAM, and 2 Kbytes of data EEPROM with ECC
- Rich analog peripherals: 12-bit ADC, ultra-low-power comparators, and multiple timers
- Extensive range of communication interfaces: USART, UART, SPI, I2C, and I2S
- Ultra-safe, low-power BOR (brownout reset) and programmable voltage detector (PVD)
- Serial wire debug supported and pre-programmed bootloader
- Up to 51 fast I/Os (45 I/Os 5V tolerant)
Applications
The STM32L051C8T7TR is suitable for a variety of low-power applications, including:
- IoT devices and smart home appliances
- Wearable devices and health monitors
- Industrial automation and control systems
- Automotive systems requiring low power consumption
- Battery-powered devices and energy harvesting applications
Q & A
- What is the core architecture of the STM32L051C8T7TR?
The core architecture is based on the Arm 32-bit Cortex-M0+ with a Memory Protection Unit (MPU). - What is the maximum operating frequency of the STM32L051C8T7TR?
The maximum operating frequency is up to 32 MHz. - What are the power supply voltage ranges for the STM32L051C8T7TR?
The power supply voltage ranges from 1.65 V to 3.6 V. - What is the temperature range for the STM32L051C8T7TR?
The temperature range is from -40 to 125 °C. - What are the key power-saving modes of the STM32L051C8T7TR?
The key power-saving modes include Standby, Stop, and low-power Run modes. - What types of communication interfaces are available on the STM32L051C8T7TR?
The available communication interfaces include USART, UART, SPI, I2C, and I2S. - Does the STM32L051C8T7TR support serial wire debug?
Yes, it supports serial wire debug. - What is the maximum number of I/Os available on the STM32L051C8T7TR?
Up to 51 fast I/Os are available, with 45 I/Os being 5V tolerant. - What are the key analog peripherals of the STM32L051C8T7TR?
The key analog peripherals include a 12-bit ADC and two ultra-low-power comparators. - Is the STM32L051C8T7TR suitable for battery-powered devices?
Yes, it is highly suitable for battery-powered devices due to its ultra-low-power features.
