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STM32L053C8T7
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
markdownSTM32L053C8T7
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32L053C8T7 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 for the optional LCD step-up converter; the datasheet gives no further voltage limit for this pin in the pin table. |
| 2 | PC13 | bidirectional | 5 V tolerant (FT) I/O with additional functions RTC_TAMP1/RTC_TS/RTC_OUT/WKUP2; floating input during and after reset. |
| 3 | PC14-OSC32_IN | bidirectional | 5 V tolerant (FT) I/O that is also the 32 kHz oscillator input OSC32_IN; floating input during and after reset. |
| 4 | PC15-OSC32_OUT | bidirectional | Standard 3.3 V (TC) I/O that is also the 32 kHz oscillator output OSC32_OUT; floating input during and after reset. |
| 5 | PH0-OSC_IN | bidirectional | Standard 3.3 V (TC) I/O that is also the HSE oscillator input OSC_IN, with alternate function USB_CRS_SYNC. |
| 6 | PH1-OSC_OUT | bidirectional | Standard 3.3 V (TC) I/O that is also the HSE oscillator output OSC_OUT. |
| 7 | NRST | bidirectional | Bidirectional active-low reset pin with embedded weak pull-up resistor. |
| 8 | VSSA | power_in | Analog ground supply 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 alternate functions TIM2_CH1, TSC_G1_IO1, USART2_CTS, TIM2_ETR, COMP1_OUT and additional functions COMP1_INM6, ADC_IN0, RTC_TAMP2/WKUP1. |
| 11 | PA1 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, LCD_SEG0, TIM2_CH2, TSC_G1_IO2, USART2_RTS/USART2_DE, TIM21_ETR and additional functions COMP1_INP, ADC_IN1. |
| 12 | PA2 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TIM21_CH1, LCD_SEG1, TIM2_CH3, TSC_G1_IO3, USART2_TX, COMP2_OUT and additional functions COMP2_INM6, ADC_IN2. |
| 13 | PA3 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TIM21_CH2, LCD_SEG2, TIM2_CH4, TSC_G1_IO4, USART2_RX and additional functions COMP2_INP, ADC_IN3. |
| 14 | PA4 | bidirectional | Standard 3.3 V (TC) I/O with reduced touch sensing sensitivity, so it is recommended to use it as a sampling capacitor I/O; alternate functions SPI1_NSS, TSC_G2_IO1, USART2_CK, TIM22_ETR and additional functions COMP1_INM4, COMP2_INM4, ADC_IN4, DAC_OUT. |
| 15 | PA5 | bidirectional | Standard 3.3 V (TC) I/O with alternate functions SPI1_SCK, TIM2_ETR, TSC_G2_IO2, TIM2_CH1 and additional functions COMP1_INM5, COMP2_INM5, ADC_IN5. |
| 16 | PA6 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MISO, LCD_SEG3, TSC_G2_IO3, LPUART1_CTS, TIM22_CH1, EVENTOUT, COMP1_OUT and additional function ADC_IN6. |
| 17 | PA7 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MOSI, LCD_SEG4, TSC_G2_IO4, TIM22_CH2, EVENTOUT, COMP2_OUT and additional function ADC_IN7. |
| 18 | PB0 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, LCD_SEG5, TSC_G3_IO2 and additional functions LCD_VLCD3, ADC_IN8, VREF_OUT. |
| 19 | PB1 | bidirectional | 5 V tolerant (FT) I/O with alternate functions LCD_SEG6, TSC_G3_IO3, LPUART1_RTS/LPUART1_DE and additional functions ADC_IN9, VREF_OUT. |
| 20 | PB2 | bidirectional | 5 V tolerant (FT) I/O with alternate functions LPTIM1_OUT, TSC_G3_IO4 and additional function LCD_VLCD2. |
| 21 | PB10 | bidirectional | 5 V tolerant (FT) I/O with alternate functions LCD_SEG10, TIM2_CH3, TSC_SYNC, LPUART1_TX, SPI2_SCK, I2C2_SCL. |
| 22 | PB11 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, LCD_SEG11, TIM2_CH4, TSC_G6_IO1, LPUART1_RX, I2C2_SDA. |
| 23 | VSS | power_in | Ground supply pin. |
| 24 | VDD | power_in | Digital supply pin (1.65 V to 3.6 V device supply range). |
| 25 | PB12 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI2_NSS/I2S2_WS, LCD_SEG12, LPUART1_RTS/LPUART1_DE, TSC_G6_IO2, I2C2_SMBA, EVENTOUT and additional function LCD_VLCD1. |
| 26 | PB13 | bidirectional | 5 V tolerant Fast Mode Plus capable (FTf) I/O with alternate functions SPI2_SCK/I2S2_CK, LCD_SEG13, TSC_G6_IO3, LPUART1_CTS, I2C2_SCL, TIM21_CH1. |
| 27 | PB14 | bidirectional | 5 V tolerant Fast Mode Plus capable (FTf) I/O with alternate functions SPI2_MISO/I2S2_MCK, LCD_SEG14, RTC_OUT, TSC_G6_IO4, LPUART1_RTS/LPUART1_DE, I2C2_SDA, TIM21_CH2. |
| 28 | PB15 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI2_MOSI/I2S2_SD, LCD_SEG15, RTC_REFIN. |
| 29 | PA8 | bidirectional | 5 V tolerant (FT) I/O with alternate functions MCO, LCD_COM0, USB_CRS_SYNC, EVENTOUT, USART1_CK. |
| 30 | PA9 | bidirectional | 5 V tolerant (FT) I/O with alternate functions MCO, LCD_COM1, TSC_G4_IO1, USART1_TX. |
| 31 | PA10 | bidirectional | 5 V tolerant (FT) I/O with alternate functions LCD_COM2, TSC_G4_IO2, USART1_RX. |
| 32 | PA11 | bidirectional | 5 V tolerant (FT) I/O powered by VDD_USB (note 2), with alternate functions SPI1_MISO, EVENTOUT, TSC_G4_IO3, USART1_CTS, COMP1_OUT and additional function USB_DM. |
| 33 | PA12 | bidirectional | 5 V tolerant (FT) I/O powered by VDD_USB (note 2), with alternate functions SPI1_MOSI, EVENTOUT, TSC_G4_IO4, USART1_RTS/USART1_DE, COMP2_OUT and additional function USB_DP. |
| 34 | PA13 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SWDIO and USB_NOE. |
| 35 | VSS | power_in | Ground supply pin. |
| 36 | VDD_USB | power_in | Supply pin for the I/Os PA11 and PA12 and the USB; for characteristics that refer to VDD on those pins, VDD_USB must be used. |
| 37 | PA14 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SWCLK and USART2_TX. |
| 38 | PA15 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_NSS, LCD_SEG17, TIM2_ETR, EVENTOUT, USART2_RX, TIM2_CH1. |
| 39 | PB3 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_SCK, LCD_SEG7, TIM2_CH2, TSC_G5_IO1, EVENTOUT and additional function COMP2_INN. |
| 40 | PB4 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MISO, LCD_SEG8, EVENTOUT, TSC_G5_IO2, TIM22_CH1 and additional function COMP2_INP. |
| 41 | PB5 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MOSI, LCD_SEG9, LPTIM1_IN1, I2C1_SMBA, TIM22_CH2 and additional function COMP2_INP. |
| 42 | PB6 | bidirectional | 5 V tolerant Fast Mode Plus capable (FTf) I/O with alternate functions USART1_TX, I2C1_SCL, LPTIM1_ETR, TSC_G5_IO3 and additional function COMP2_INP. |
| 43 | PB7 | bidirectional | 5 V tolerant Fast Mode Plus capable (FTf) I/O with alternate functions USART1_RX, I2C1_SDA, LPTIM1_IN2, TSC_G5_IO4 and additional functions COMP2_INP, PVD_IN. |
| 44 | BOOT0 | input | Dedicated BOOT0 input pin used to select the boot mode. |
| 45 | PB8 | bidirectional | 5 V tolerant Fast Mode Plus capable (FTf) I/O with alternate functions LCD_SEG16, TSC_SYNC, I2C1_SCL. |
| 46 | PB9 | bidirectional | 5 V tolerant Fast Mode Plus capable (FTf) I/O with alternate functions LCD_COM3, EVENTOUT, I2C1_SDA, SPI2_NSS/I2S2_WS. |
| 47 | VSS | power_in | Ground supply pin. |
| 48 | VDD | power_in | Digital supply pin (1.65 V to 3.6 V device supply range). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
STM32L053C8T7 - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32l053c8t7-etched.step/stm32l053c8t7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l053c8t7.step/stm32l053c8t7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (136 pp, sha256
b30ef01e0e2d9c80, retrieved 2026-10-08, 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).