Overview
The STM32L052K6U6TR is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 series. It integrates the high-performance Arm® Cortex®-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. This MCU is designed for low-power applications, featuring a wide range of power-saving modes and advanced peripherals. It includes 64 Kbytes of Flash program memory, 8 Kbytes of RAM, and 2 Kbytes of data EEPROM, along with a memory protection unit (MPU) and sector protection against R/W operations. The device supports various communication interfaces, including USB 2.0 crystal-less, USART, SPI, I2C, and a low-power UART. It is suitable for applications requiring high power efficiency and advanced analog features.
Key Specifications
| Parameter | Value |
|---|---|
| Core | Arm® 32-bit Cortex®-M0+ with MPU |
| Frequency | Up to 32 MHz |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 to 125 °C |
| Flash Memory | Up to 64 Kbytes with ECC |
| RAM | 8 Kbytes |
| Data EEPROM | 2 Kbytes with ECC |
| Backup Register | 20 bytes |
| Low-Power Modes | Standby: 0.27 μA (2 wakeup pins), Stop: 0.4 μA (16 wakeup lines), Stop + RTC + 8 KB RAM retention: 0.8 μA |
| Wakeup Time | 3.5 μs (from RAM), 5 μs (from Flash memory) |
| Clock Sources | 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC, internal high-speed 16 MHz RC, internal low-power 37 kHz RC, internal multispeed low-power 65 kHz to 4.2 MHz RC |
| Communication Interfaces | USB 2.0 crystal-less, up to 2 USARTs, up to 4 SPIs, 2 I2Cs, 1 I2S, 1 low-power UART |
| Analog Peripherals | 12-bit ADC (up to 16 channels), 12-bit DAC, 2 ultra-low-power comparators, up to 24 capacitive sensing channels |
| Timers | 9 timers including 16-bit timers, ultra-low-power timer, SysTick, RTC, and watchdogs |
| Package | UFQFPN 32 5x5x0.55 mm |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, etc.)
- High-performance Arm® Cortex®-M0+ 32-bit RISC core with MPU
- Advanced analog peripherals including 12-bit ADC, 12-bit DAC, and ultra-low-power comparators
- Up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors
- Rich set of communication interfaces: USB 2.0 crystal-less, USART, SPI, I2C, and low-power UART
- Internal clock sources: crystal oscillators, high-speed internal RC, and low-power RC
- Pre-programmed bootloader and serial wire debug support
- True RNG and firewall protection for enhanced security
- All packages are ECOPACK2 compliant
Applications
- Low-power IoT devices and smart home appliances
- Wearable devices and health monitors
- Industrial automation and control systems
- Automotive systems requiring low power consumption
- Consumer electronics such as remote controls and gaming devices
- Sensors and monitoring systems in various industries
Q & A
- What is the core architecture of the STM32L052K6U6TR?
The core architecture is based on the Arm® 32-bit Cortex®-M0+ with a memory protection unit (MPU).
- What is the operating voltage range of the STM32L052K6U6TR?
The operating voltage range is from 1.65 V to 3.6 V.
- What are the low-power modes available in the STM32L052K6U6TR?
The device supports Standby, Stop, and Stop + RTC + 8 KB RAM retention modes, with current consumptions of 0.27 μA, 0.4 μA, and 0.8 μA respectively.
- What are the key analog peripherals of the STM32L052K6U6TR?
The key analog peripherals include a 12-bit ADC, a 12-bit DAC, two ultra-low-power comparators, and up to 24 capacitive sensing channels.
- What communication interfaces are supported by the STM32L052K6U6TR?
The device supports USB 2.0 crystal-less, up to two USARTs, up to four SPIs, two I2Cs, one I2S, and one low-power UART.
- What is the maximum frequency of the CPU?
The maximum frequency of the CPU is 32 MHz.
- What is the wake-up time from RAM and Flash memory?
The wake-up time from RAM is 3.5 μs, and from Flash memory is 5 μs.
- Does the STM32L052K6U6TR support touch sensing functionality?
Yes, it supports touch sensing functionality with up to 24 capacitive sensing channels.
- What is the package type of the STM32L052K6U6TR?
The package type is UFQFPN 32 5x5x0.55 mm.
- Is the STM32L052K6U6TR compliant with environmental standards?
Yes, all packages are ECOPACK2 compliant.
