The STM32L052K6U6 is an ultra-low-power ARM Cortex-M0+ microcontroller from STMicroelectronics with 32KB Flash, 8KB RAM, 2KB EEPROM, and USB 2.0 crystal-less capability. Operating at up to 32 MHz from 1.65V to 3.6V, it integrates a 12-bit ADC, 12-bit DAC, two comparators, and multiple communication interfaces in a UFQFPN-32 (5 x 5 mm) package.<\/p>\n
Product Overview The STM32L052K6U6 is an ultra-low-power ARM Cortex-M0+ microcontroller from STMicroelectronics with 32KB Flash, 8KB RAM, 2KB EEPROM, and USB 2.0 crystal-less capability. Operating at up to 32 MHz from 1.65V to 3.6V, it integrates a 12-bit ADC, 12-bit DAC, two comparators, and multiple communication interfaces in a UFQFPN-32 (5 x 5 mm) package. […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,25],"tags":[],"chip_brand":[142],"class_list":["post-6489","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-microcontrollers-mcu","chip_brand-st"],"acf":{"brief_explanation":"Ultra-low-power ARM Cortex-M0+ MCU, 32KB Flash, 8KB RAM, 2KB EEPROM, USB, 12-bit ADC\/DAC, UFQFPN-32","date_code":"","package_case":"UFQFPN-32 (5 x 5 mm)","in_stock":5400,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/stm32l052k6.pdf","price":"$2.15","product_introduction":"The STM32L052K6U6 from STMicroelectronics is an ultra-low-power 32-bit microcontroller built on the ARM Cortex-M0+ core, designed for applications where power efficiency and USB connectivity are paramount. With 32KB Flash, 8KB SRAM, and 2KB data EEPROM (all with ECC), the device provides ample memory for embedded applications. The integrated USB 2.0 crystal-less interface eliminates the need for an external crystal, reducing BOM cost and board space. The rich analog peripheral set includes a 12-bit 1.14 Msps ADC, 12-bit DAC, and two comparators, making it ideal for mixed-signal applications in portable and battery-powered systems.","working_principle":"The STM32L052K6U6 operates on the ARM Cortex-M0+ 32-bit RISC processor with a 2-stage pipeline and Von Neumann architecture. The Clock Recovery System (CRS) automatically calibrates the internal 48 MHz RC oscillator using USB SOF packets, maintaining USB timing accuracy without an external crystal. The ADC uses a successive approximation register (SAR) architecture with hardware oversampling capability for improved effective resolution. The DAC provides a buffered voltage output from a 12-bit resistor string. Multiple low-power modes allow fine-grained power management: Run mode at 88 \u00b5A\/MHz, Low-power Run at 44 \u00b5A\/MHz, Stop mode at 0.4 \u00b5A (with RTC), and Standby at 0.27 \u00b5A. The DMA controller offloads data transfers from the CPU, enabling concurrent peripheral operations.","pin_description":"
| Pin<\/th> | Name<\/th> | Function<\/th><\/tr> | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1<\/td> | VDD<\/td> | Power supply (1.65-3.6V)<\/td><\/tr> | ||||||||||||
| 2<\/td> | PA0\/ADC_IN0\/USART2_TX<\/td> | Port A0 \/ ADC input \/ UART TX<\/td><\/tr> | ||||||||||||
| 3<\/td> | PA1\/ADC_IN1\/USART2_RX<\/td> | Port A1 \/ ADC input \/ UART RX<\/td><\/tr> | ||||||||||||
| 4<\/td> | PA2\/ADC_IN2\/USART2_CTS<\/td> | Port A2 \/ ADC input \/ UART CTS<\/td><\/tr> | ||||||||||||
| 5<\/td> | PA3\/ADC_IN3\/USART2_RTS<\/td> | Port A3 \/ ADC input \/ UART RTS<\/td><\/tr> | ||||||||||||
| 6<\/td> | PA4\/ADC_IN4\/DAC_OUT1<\/td> | Port A4 \/ ADC input \/ DAC output<\/td><\/tr> | ||||||||||||
| 7<\/td> | PA5\/ADC_IN5\/SPI1_SCK<\/td> | Port A5 \/ ADC input \/ SPI clock<\/td><\/tr> | ||||||||||||
| 8<\/td> | PA6\/ADC_IN6\/SPI1_MISO<\/td> | Port A6 \/ ADC input \/ SPI MISO<\/td><\/tr> | ||||||||||||
| 9<\/td> | PA7\/ADC_IN7\/SPI1_MOSI<\/td> | Port A7 \/ ADC input \/ SPI MOSI<\/td><\/tr> | ||||||||||||
| 16<\/td> | PA11\/USB_DM\/CMP1_OUT<\/td> | Port A11 \/ USB D- \/ Comparator output<\/td><\/tr> | ||||||||||||
| 17<\/td> | PA12\/USB_DP\/CMP2_OUT<\/td> | Port A12 \/ USB D+ \/ Comparator output<\/td><\/tr><\/table>","application_scenarios":"The STM32L052K6U6 excels in USB peripheral applications such as custom HID devices, virtual COM ports, and medical data loggers that connect to PCs via USB. Its crystal-less USB implementation reduces cost and board space in portable devices. In smart metering, the ultra-low-power modes enable year-long battery operation while the DAC and ADC support precision measurement and calibration. The capacitive sensing channels enable touch buttons and sliders in consumer electronics without additional touch ICs. For wearable devices, the 0.27 \u00b5A standby current and 5 \u00b5s wakeup time enable aggressive power cycling.","alternative_models":"
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