Overview
The STM32L052K8T6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L052x6/8 series. It integrates the Arm® Cortex®-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. This MCU is designed for high power efficiency and features a wide range of enhanced I/Os and peripherals. It includes high-speed embedded memories such as 64 Kbytes of Flash program memory, 8 Kbytes of RAM, and 2 Kbytes of data EEPROM. The device also supports various low-power modes, making it suitable for applications requiring minimal energy consumption.
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 |
| EEPROM | 2 Kbytes with ECC |
| Backup Register | 20-byte |
| 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 |
| Analog Peripherals | 12-bit ADC (1.14 Msps, up to 16 channels), 12-bit DAC (1 channel), 2 ultra-low-power comparators |
| Communication Interfaces | USB 2.0 crystal-less, 2x USART, 1x UART (low power), up to 4x SPI, 2x I2C |
| Timers | 9 timers including 16-bit, ultra-low-power timer, RTC, and SysTick |
| Capacitive Sensing Channels | Up to 24 channels supporting touchkey, linear, and rotary touch sensors |
Key Features
- Ultra-low-power platform with multiple low-power modes (Standby, Stop, and Stop + RTC + RAM retention)
- High-speed embedded memories: 64 Kbytes of Flash, 8 Kbytes of RAM, and 2 Kbytes of data EEPROM
- Rich analog peripherals including 12-bit ADC, 12-bit DAC, and ultra-low-power comparators
- Extensive range of communication interfaces: USB 2.0 crystal-less, USART, UART, SPI, and I2C
- Up to 51 fast I/Os (45 I/Os 5V tolerant)
- Internal self-calibration of 48 MHz RC for USB and PLL for CPU clock
- Pre-programmed bootloader and serial wire debug support
- Up to 24 capacitive sensing channels for touch sensing functionality
- Real-time clock and backup registers that remain powered in Standby mode
Applications
- IoT devices requiring low power consumption
- Portable and battery-powered devices
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Consumer electronics such as smart home devices and wearables
- Automotive systems requiring low power and high reliability
Q & A
- What is the core architecture of the STM32L052K8T6?
The STM32L052K8T6 is based on the Arm® 32-bit Cortex®-M0+ core with a memory protection unit (MPU).
- What is the maximum operating frequency of the STM32L052K8T6?
The maximum operating frequency is up to 32 MHz.
- What are the memory specifications of the STM32L052K8T6?
The device features up to 64 Kbytes of Flash memory, 8 Kbytes of RAM, and 2 Kbytes of data EEPROM.
- What are the low-power modes available on the STM32L052K8T6?
The device supports Standby, Stop, and Stop + RTC + RAM retention modes, with current consumptions of 0.27 µA, 0.4 µA, and 0.8 µA respectively.
- What analog peripherals are available on the STM32L052K8T6?
The device includes a 12-bit ADC, a 12-bit DAC, and two ultra-low-power comparators.
- What communication interfaces does the STM32L052K8T6 support?
The device supports USB 2.0 crystal-less, USART, UART, SPI, and I2C interfaces.
- How many capacitive sensing channels does the STM32L052K8T6 have?
The device supports up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What is the temperature range for the STM32L052K8T6?
The device operates in a temperature range of -40 to 125 °C.
- Does the STM32L052K8T6 support serial wire debug?
Yes, the device supports serial wire debug.
- What is the power supply range for the STM32L052K8T6?
The device operates from a power supply range of 1.65 V to 3.6 V.
- Are there any pre-programmed bootloaders available on the STM32L052K8T6?
Yes, the device comes with a pre-programmed bootloader.
