component
STM32L052C8U6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTM32L052C8U6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · UFQFPN-48(7x7)
STM32L052C8U6 from STMicroelectronics, in a UFQFPN-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Digital supply pin for the core and I/Os; the features list the device power supply as 1.65 V to 3.6 V. |
| 2 | PC13 | bidirectional | 5 V tolerant (FT) GPIO, floating input after reset, with additional functions RTC_TAMP1, RTC_TS, RTC_OUT and WKUP2. |
| 3 | PC14-OSC32_IN | bidirectional | 5 V tolerant (FT) GPIO, floating input after reset, which is also the 32 kHz oscillator input OSC32_IN. |
| 4 | PC15-OSC32_OUT | bidirectional | Standard 3.3 V (TC) GPIO, floating input after reset, which is also the 32 kHz oscillator output OSC32_OUT. |
| 5 | PH0-OSC_IN | bidirectional | Standard 3.3 V (TC) GPIO, which is also the HSE oscillator input OSC_IN and has alternate function USB_CRS_SYNC. |
| 6 | PH1-OSC_OUT | bidirectional | Standard 3.3 V (TC) GPIO, which is also the HSE oscillator output OSC_OUT. |
| 7 | NRST | bidirectional | Bidirectional reset pin with an embedded weak pull-up resistor. |
| 8 | VSSA | power_in | Analog ground pin; the datasheet references all voltages to VSS. |
| 9 | VDDA | power_in | Analog supply pin for the analog blocks; the features list the ADC and comparators down to 1.65 V and the DAC down to 1.8 V. |
| 10 | PA0 | bidirectional | Standard 3.3 V (TC) GPIO with alternate functions TIM2_CH1, USART2_CTS and COMP1_OUT, and analog inputs ADC_IN0 and COMP1_INM6. |
| 11 | PA1 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TIM2_CH2, USART2_RTS/USART2_DE and TIM21_ETR, and analog inputs ADC_IN1 and COMP1_INP. |
| 12 | PA2 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TIM21_CH1, TIM2_CH3, USART2_TX and COMP2_OUT, and analog inputs ADC_IN2 and COMP2_INM6. |
| 13 | PA3 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TIM21_CH2, TIM2_CH4 and USART2_RX, and analog inputs ADC_IN3 and COMP2_INP. |
| 14 | PA4 | bidirectional | Standard 3.3 V (TC) GPIO with reduced touch sensing sensitivity (note 2, recommended as sampling capacitor I/O), with alternate functions SPI1_NSS, USART2_CK and TIM22_ETR, and analog input ADC_IN4 and DAC_OUT. |
| 15 | PA5 | bidirectional | Standard 3.3 V (TC) GPIO with alternate functions SPI1_SCK, TIM2_ETR and TIM2_CH1, and analog inputs ADC_IN5, COMP1_INM5 and COMP2_INM5. |
| 16 | PA6 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_MISO, LPUART1_CTS, TIM22_CH1, EVENTOUT and COMP1_OUT, and analog input ADC_IN6. |
| 17 | PA7 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_MOSI, TIM22_CH2, EVENTOUT and COMP2_OUT, and analog input ADC_IN7. |
| 18 | PB0 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions EVENTOUT and TSC_G3_IO2, and analog input ADC_IN8 and VREF_OUT. |
| 19 | PB1 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TSC_G3_IO3 and LPUART1_RTS/LPUART1_DE, and analog input ADC_IN9 and VREF_OUT. |
| 20 | PB2 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions LPTIM1_OUT and TSC_G3_IO4. |
| 21 | PB10 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TIM2_CH3, TSC_SYNC, LPUART1_TX, SPI2_SCK and I2C2_SCL. |
| 22 | PB11 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions EVENTOUT, TIM2_CH4, TSC_G6_IO1, LPUART1_RX and I2C2_SDA. |
| 23 | VSS | power_in | Ground pin for the digital supply domain. |
| 24 | VDD | power_in | Digital supply pin for the core and I/Os; the features list the device power supply as 1.65 V to 3.6 V. |
| 25 | PB12 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI2_NSS/I2S2_WS, LPUART1_RTS/LPUART1_DE, TSC_G6_IO2, I2C2_SMBA and EVENTOUT. |
| 26 | PB13 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions SPI2_SCK/I2S2_CK, TSC_G6_IO3, LPUART1_CTS, I2C2_SCL and TIM21_CH1. |
| 27 | PB14 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions SPI2_MISO/I2S2_MCK, RTC_OUT, TSC_G6_IO4, LPUART1_RTS/LPUART1_DE, I2C2_SDA and TIM21_CH2. |
| 28 | PB15 | bidirectional | 5 V tolerant (FT) GPIO with alternate function SPI2_MOSI/I2S2_SD and additional function RTC_REFIN. |
| 29 | PA8 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions MCO, USB_CRS_SYNC, EVENTOUT and USART1_CK. |
| 30 | PA9 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions MCO, TSC_G4_IO1 and USART1_TX. |
| 31 | PA10 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TSC_G4_IO2 and USART1_RX. |
| 32 | PA11 | bidirectional | 5 V tolerant (FT) GPIO powered by VDD_USB (note 3), with alternate functions SPI1_MISO, EVENTOUT, TSC_G4_IO3, USART1_CTS and COMP1_OUT, and additional function USB_DM. |
| 33 | PA12 | bidirectional | 5 V tolerant (FT) GPIO powered by VDD_USB (note 3), with alternate functions SPI1_MOSI, EVENTOUT, TSC_G4_IO4, USART1_RTS/USART1_DE and COMP2_OUT, and additional function USB_DP. |
| 34 | PA13 | bidirectional | 5 V tolerant (FT) GPIO with alternate function SWDIO and additional function USB_NOE. |
| 35 | VSS | power_in | Ground pin for the digital supply domain. |
| 36 | VDD_USB | power_in | Supply pin for the USB-related I/Os PA11 and PA12; per note 3, characteristics that refer to VDD must use VDD_USB for these pins. |
| 37 | PA14 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SWCLK and USART2_TX. |
| 38 | PA15 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX and TIM2_CH1. |
| 39 | PB3 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_SCK, TIM2_CH2 and EVENTOUT, a touch sensing group 5 signal, and additional function COMP2_INN. |
| 40 | PB4 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_MISO, EVENTOUT, TSC_G5_IO2 and TIM22_CH1, and additional function COMP2_INP. |
| 41 | PB5 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA and TIM22_CH2, and additional function COMP2_INP. |
| 42 | PB6 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions USART1_TX, I2C1_SCL, LPTIM1_ETR and TSC_G5_IO3, and additional function COMP2_INP. |
| 43 | PB7 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions USART1_RX, I2C1_SDA, LPTIM1_IN2 and TSC_G5_IO4, and additional functions COMP2_INP and PVD_IN. |
| 44 | BOOT0 | input | Dedicated BOOT0 pin (I/O structure B) used to select the boot mode. |
| 45 | PB8 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions TSC_SYNC and I2C1_SCL. |
| 46 | PB9 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions EVENTOUT, I2C1_SDA and SPI2_NSS/I2S2_WS. |
| 47 | VSS | power_in | Ground pin for the digital supply domain. |
| 48 | VDD | power_in | Digital supply pin for the core and I/Os; the features list the device power supply as 1.65 V to 3.6 V. |
| 49 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | UFQFPN-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 49 |
CAD (KiCad official)
- Symbol:
STM32L052C8U6 - Footprint:
Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.15x5.15mm - 3D model: UFQFPN-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32l052c8u6-etched.step/stm32l052c8u6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l052c8u6.step/stm32l052c8u6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (150 pp, sha256
8fdd784104b88c64, retrieved 2026-10-10, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).