Overview
The STM32L051K8U3 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 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 to provide high power efficiency and is suitable for a wide range of applications requiring low power consumption.
The device features extensive memory options, including up to 64 Kbytes of Flash program memory, 8 Kbytes of RAM, and 2 Kbytes of data EEPROM. It also includes a 20-byte backup register and sector protection against R/W operations. The STM32L051K8U3 supports multiple low-power modes and has a comprehensive set of power-saving features, making it ideal for battery-powered devices and other low-power applications.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm 32-bit Cortex-M0+ |
| 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 |
| Low-Power Modes | Standby: 0.27 µA, Stop: 0.4 µA, Stop + RTC + RAM retention: 0.8 µA |
| Wakeup Time | 3.5 µs from RAM, 5 µs from Flash memory |
| Package | UFQFPN 32 5x5x0.55 mm |
| I/Os | Up to 51 fast I/Os (27 high current) |
| Analog Features | 12-bit ADC, 2 ultra-low-power comparators |
| Timers | 9 timers including 16-bit and ultra-low-power timers, RTC, SysTick |
| Communication Interfaces | 2 I2C, 2 SPI, 1 I2S, 2 USART, 1 low-power UART |
Key Features
- Ultra-low-power platform: Optimized for low power consumption with multiple low-power modes.
- High-performance core: Arm 32-bit Cortex-M0+ core operating at up to 32 MHz.
- Extensive memory options: Up to 64 Kbytes of Flash, 8 Kbytes of RAM, and 2 Kbytes of data EEPROM.
- Analog peripherals: 12-bit ADC, 2 ultra-low-power comparators, and multiple timers.
- Communication interfaces: Supports I2C, SPI, I2S, USART, and low-power UART.
- Power management: Ultra-safe, low-power BOR, POR/PDR, and programmable voltage detector (PVD).
- Development support: Serial wire debug supported and pre-programmed bootloader.
Applications
- Industrial automation: Suitable for low-power industrial control systems.
- Consumer electronics: Ideal for battery-powered devices such as smart home devices and wearables.
- Medical devices: Can be used in medical devices requiring low power consumption and high reliability.
- Automotive systems: Applicable in automotive systems where low power and high performance are necessary.
- IoT devices: Perfect for Internet of Things (IoT) applications that require efficient power management.
Q & A
- What is the core architecture of the STM32L051K8U3?
The core architecture is based on the Arm 32-bit Cortex-M0+.
- What is the maximum operating frequency of the STM32L051K8U3?
The maximum operating frequency is up to 32 MHz.
- What are the power supply voltage ranges for the STM32L051K8U3?
The power supply voltage ranges from 1.65 V to 3.6 V.
- What are the low-power modes available in the STM32L051K8U3?
The device supports Standby, Stop, and Stop + RTC + RAM retention modes.
- What is the temperature range for the STM32L051K8U3?
The operating temperature range is from -40 to 125 °C.
- What analog features are available on the STM32L051K8U3?
The device includes a 12-bit ADC and 2 ultra-low-power comparators.
- What communication interfaces does the STM32L051K8U3 support?
The device supports I2C, SPI, I2S, USART, and low-power UART.
- What is the package type for the STM32L051K8U3?
The package type is UFQFPN 32 5x5x0.55 mm.
- Does the STM32L051K8U3 support serial wire debug?
- What is the purpose of the backup register in the STM32L051K8U3?
The backup register remains powered in Standby mode to retain critical data.
