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STM32L053C8T6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-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
markdownSTM32L053C8T6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32L053C8T6 from STMicroelectronics, in a LQFP-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 | VLCD | power_in | LCD power supply pin (VLCD) for the LCD driver, listed in Table 15 as a supply pin with no separate I/O structure. |
| 2 | PC13 | bidirectional | 5 V tolerant (FT) I/O with RTC_TAMP1/RTC_TS/RTC_OUT and WKUP2 functions, floating input during and after reset unless a note says otherwise. |
| 3 | PC14-OSC32_IN | bidirectional | 5 V tolerant (FT) I/O that is also the OSC32_IN low-speed oscillator input; after reset the pin function is PC14. |
| 4 | PC15-OSC32_OUT | bidirectional | Standard 3.3 V (TC) I/O that is also the OSC32_OUT low-speed oscillator output; after reset the pin function is PC15. |
| 5 | PH0-OSC_IN | bidirectional | Standard 3.3 V (TC) I/O that is also the OSC_IN high-speed oscillator input and carries USB_CRS_SYNC; after reset the pin function is PH0. |
| 6 | PH1-OSC_OUT | bidirectional | Standard 3.3 V (TC) I/O that is also the OSC_OUT high-speed oscillator output; after reset the pin function is PH1. |
| 7 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor. |
| 8 | VSSA | power_in | Analog ground pin for the ADC, DAC, comparators and reference. |
| 9 | VDDA | power_in | Analog supply pin for the ADC, DAC, comparators and reference. |
| 10 | PA0 | bidirectional | Standard 3.3 V (TC) I/O with TIM2_CH1, TSC_G1_IO1, USART2_CTS, TIM2_ETR and COMP1_OUT alternate functions, and ADC_IN0, COMP1_INM6 and RTC_TAMP2/WKUP1 additional functions. |
| 11 | PA1 | bidirectional | 5 V tolerant (FT) I/O with TIM2_CH2, TSC_G1_IO2, USART2_RTS/USART2_DE, TIM21_ETR, LCD_SEG0 and EVENTOUT alternate functions, and ADC_IN1 and COMP1_INP additional functions. |
| 12 | PA2 | bidirectional | 5 V tolerant (FT) I/O with TIM21_CH1, LCD_SEG1, TIM2_CH3, TSC_G1_IO3, USART2_TX and COMP2_OUT alternate functions, and ADC_IN2 and COMP2_INM6 additional functions. |
| 13 | PA3 | bidirectional | 5 V tolerant (FT) I/O with TIM21_CH2, LCD_SEG2, TIM2_CH4, TSC_G1_IO4 and USART2_RX alternate functions, and ADC_IN3 and COMP2_INP additional functions. |
| 14 | PA4 | bidirectional | Standard 3.3 V (TC) I/O with SPI1_NSS, TSC_G2_IO1, USART2_CK and TIM22_ETR alternate functions, ADC_IN4 and DAC_OUT additional functions, and reduced touch sensing sensitivity (recommended as sampling capacitor I/O). |
| 15 | PA5 | bidirectional | Standard 3.3 V (TC) I/O with SPI1_SCK, TIM2_ETR, TSC_G2_IO2 and TIM2_CH1 alternate functions, and ADC_IN5, COMP1_INM5 and COMP2_INM5 additional functions. |
| 16 | PA6 | bidirectional | 5 V tolerant (FT) I/O with SPI1_MISO, LCD_SEG3, TSC_G2_IO3, LPUART1_CTS, TIM22_CH1, EVENTOUT and COMP1_OUT alternate functions, and ADC_IN6 additional function. |
| 17 | PA7 | bidirectional | 5 V tolerant (FT) I/O with SPI1_MOSI, LCD_SEG4, TSC_G2_IO4, TIM22_CH2, EVENTOUT and COMP2_OUT alternate functions, and ADC_IN7 additional function. |
| 18 | PB0 | bidirectional | 5 V tolerant (FT) I/O with EVENTOUT, LCD_SEG5 and TSC_G3_IO2 alternate functions, and LCD_VLCD3, ADC_IN8 and VREF_OUT additional functions. |
| 19 | PB1 | bidirectional | 5 V tolerant (FT) I/O with LCD_SEG6, TSC_G3_IO3 and LPUART1_RTS/LPUART1_DE alternate functions, and ADC_IN9 and VREF_OUT additional functions. |
| 20 | PB2 | bidirectional | 5 V tolerant (FT) I/O with LPTIM1_OUT and TSC_G3_IO4 alternate functions, and LCD_VLCD2 additional function. |
| 21 | PB10 | bidirectional | 5 V tolerant (FT) I/O with LCD_SEG10, TIM2_CH3, TSC_SYNC, LPUART1_TX, SPI2_SCK and I2C2_SCL alternate functions. |
| 22 | PB11 | bidirectional | 5 V tolerant (FT) I/O with EVENTOUT, LCD_SEG11, TIM2_CH4, TSC_G6_IO1, LPUART1_RX and I2C2_SDA alternate functions. |
| 23 | VSS | power_in | Ground pin. |
| 24 | VDD | power_in | Digital supply pin; the device operates from 1.65 V to 3.6 V. |
| 25 | PB12 | bidirectional | 5 V tolerant (FT) I/O with SPI2_NSS/I2S2_WS, LCD_SEG12, LPUART1_RTS/LPUART1_DE, TSC_G6_IO2, I2C2_SMBA and EVENTOUT alternate functions, and LCD_VLCD1 additional function. |
| 26 | PB13 | bidirectional | 5 V tolerant, Fast-mode-Plus capable (FTf) I/O with SPI2_SCK/I2S2_CK, LCD_SEG13, TSC_G6_IO3, LPUART1_CTS, I2C2_SCL and TIM21_CH1 alternate functions. |
| 27 | PB14 | bidirectional | 5 V tolerant, Fast-mode-Plus capable (FTf) I/O with SPI2_MISO/I2S2_MCK, LCD_SEG14, RTC_OUT, TSC_G6_IO4, LPUART1_RTS/LPUART1_DE, I2C2_SDA and TIM21_CH2 alternate functions. |
| 28 | PB15 | bidirectional | 5 V tolerant (FT) I/O with SPI2_MOSI/I2S2_SD, LCD_SEG15 and RTC_REFIN alternate functions. |
| 29 | PA8 | bidirectional | 5 V tolerant (FT) I/O with MCO, LCD_COM0, USB_CRS_SYNC, EVENTOUT and USART1_CK alternate functions. |
| 30 | PA9 | bidirectional | 5 V tolerant (FT) I/O with MCO, LCD_COM1, TSC_G4_IO1 and USART1_TX alternate functions. |
| 31 | PA10 | bidirectional | 5 V tolerant (FT) I/O with LCD_COM2, TSC_G4_IO2 and USART1_RX alternate functions. |
| 32 | PA11 | bidirectional | 5 V tolerant (FT) I/O powered from VDD_USB, with SPI1_MISO, EVENTOUT, TSC_G4_IO3, USART1_CTS and COMP1_OUT alternate functions and USB_DM additional function. |
| 33 | PA12 | bidirectional | 5 V tolerant (FT) I/O powered from VDD_USB, with SPI1_MOSI, EVENTOUT, TSC_G4_IO4, USART1_RTS/USART1_DE and COMP2_OUT alternate functions and USB_DP additional function. |
| 34 | PA13 | bidirectional | 5 V tolerant (FT) I/O with SWDIO and USB_NOE alternate functions. |
| 35 | VSS | power_in | Ground pin. |
| 36 | VDD_USB | power_in | Supply pin for the USB-powered I/Os (PA11, PA12); for characteristics referring to VDD, VDD_USB must be used instead. |
| 37 | PA14 | bidirectional | 5 V tolerant (FT) I/O with SWCLK and USART2_TX alternate functions. |
| 38 | PA15 | bidirectional | 5 V tolerant (FT) I/O with SPI1_NSS, LCD_SEG17, TIM2_ETR, EVENTOUT, USART2_RX and TIM2_CH1 alternate functions. |
| 39 | PB3 | bidirectional | 5 V tolerant (FT) I/O with SPI1_SCK, LCD_SEG7, TIM2_CH2, TSC_G5_IO1 and EVENTOUT alternate functions, and COMP2_INN additional function. |
| 40 | PB4 | bidirectional | 5 V tolerant (FT) I/O with SPI1_MISO, LCD_SEG8, EVENTOUT, TSC_G5_IO2 and TIM22_CH1 alternate functions, and COMP2_INP additional function. |
| 41 | PB5 | bidirectional | 5 V tolerant (FT) I/O with SPI1_MOSI, LCD_SEG9, LPTIM1_IN1, I2C1_SMBA and TIM22_CH2 alternate functions, and COMP2_INP additional function. |
| 42 | PB6 | bidirectional | 5 V tolerant, Fast-mode-Plus capable (FTf) I/O with USART1_TX, I2C1_SCL, LPTIM1_ETR and TSC_G5_IO3 alternate functions, and COMP2_INP additional function. |
| 43 | PB7 | bidirectional | 5 V tolerant, Fast-mode-Plus capable (FTf) I/O with USART1_RX, I2C1_SDA, LPTIM1_IN2 and TSC_G5_IO4 alternate functions, and COMP2_INP and PVD_IN additional functions. |
| 44 | BOOT0 | input | Dedicated BOOT0 boot-mode selection input pin. |
| 45 | PB8 | bidirectional | 5 V tolerant, Fast-mode-Plus capable (FTf) I/O with LCD_SEG16, TSC_SYNC and I2C1_SCL alternate functions. |
| 46 | PB9 | bidirectional | 5 V tolerant, Fast-mode-Plus capable (FTf) I/O with LCD_COM3, EVENTOUT, I2C1_SDA and SPI2_NSS/I2S2_WS alternate functions. |
| 47 | VSS | power_in | Ground pin. |
| 48 | VDD | power_in | Digital supply pin; the device operates from 1.65 V to 3.6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
STM32L053C8T6 - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32l053c8t6-etched.step/stm32l053c8t6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l053c8t6.step/stm32l053c8t6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (136 pp, sha256
b30ef01e0e2d9c80, 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).