Overview
The STM32L052K6U6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 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 peripherals and interfaces. It includes a memory protection unit (MPU), high-speed embedded memories, and extensive I/Os. The device 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 |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 to 125 °C |
| Low-Power Modes | 0.27 μA Standby mode (2 wakeup pins), 0.4 μA Stop mode (16 wakeup lines), 0.8 μA Stop mode + RTC + 8 KB RAM retention |
| Current Consumption in Run Mode | 88 μA/MHz |
| Wakeup Time | 3.5 μs from RAM, 5 μs from Flash memory |
| Flash Memory | Up to 64 KB with ECC |
| RAM | 8 KB |
| EEPROM | 2 KB with ECC |
| Backup Register | 20 bytes |
| I/Os | Up to 51 fast I/Os (45 I/Os 5V tolerant) |
| Analog Peripherals | 12-bit ADC, 12-bit DAC, 2 ultra-low-power comparators |
| Communication Interfaces | USB 2.0 crystal-less, 2 USARTs, 1 UART (low power), up to 4 SPIs, 2 I2Cs, 1 I2S |
| Timers | 9 timers including general-purpose timers, low-power timer, SysTick, RTC, and watchdogs |
| Capacitive Sensing Channels | Up to 24 channels |
| Package | UFQFPN 32 5x5x0.55 mm |
Key Features
- Ultra-low-power platform with multiple low-power modes (Standby, Stop, etc.)
- High-performance Arm® Cortex®-M0+ 32-bit RISC core
- High-speed embedded memories: up to 64 KB Flash, 8 KB RAM, and 2 KB EEPROM
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, and ultra-low-power comparators
- Extensive range of communication interfaces: USB 2.0 crystal-less, USARTs, UART, SPIs, I2Cs, and I2S
- Multiple timers and watchdogs, including a low-power timer and real-time clock
- Up to 24 capacitive sensing channels for touch sensing functionality
- 7-channel DMA controller supporting various peripherals
- Ultra-safe, low-power BOR (brownout reset) and programmable voltage detector (PVD)
- Internal clock sources including crystal oscillators and internal RC oscillators
- Pre-programmed bootloader and serial wire debug support
- All packages are ECOPACK2 compliant
Applications
- IoT devices requiring low power consumption
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring low power and high reliability
- Sensor networks and data logging applications
Q & A
- What is the core architecture of the STM32L052K6U6?
The STM32L052K6U6 is based on the Arm® Cortex®-M0+ 32-bit RISC core.
- What is the operating voltage range of the STM32L052K6U6?
The operating voltage range is from 1.65 V to 3.6 V.
- What are the low-power modes available on the STM32L052K6U6?
The device supports Standby mode (0.27 μA), Stop mode (0.4 μA), and Stop mode + RTC + 8 KB RAM retention (0.8 μA).
- How much current does the STM32L052K6U6 consume in Run mode?
The current consumption in Run mode is 88 μA/MHz.
- What is the wakeup time from RAM and Flash memory?
The wakeup time is 3.5 μs from RAM and 5 μs from Flash memory.
- What types of analog peripherals are available on the STM32L052K6U6?
The device includes a 12-bit ADC, a 12-bit DAC, and two ultra-low-power comparators.
- What communication interfaces does the STM32L052K6U6 support?
The device supports USB 2.0 crystal-less, USARTs, UART, SPIs, I2Cs, and I2S.
- How many capacitive sensing channels does the STM32L052K6U6 have?
The device supports up to 24 capacitive sensing channels.
- What is the package type of the STM32L052K6U6?
The package type is UFQFPN 32 5x5x0.55 mm.
- Is the STM32L052K6U6 compliant with any environmental standards?
Yes, all packages are ECOPACK2 compliant.
