component
STM32L476RET6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). 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
markdownSTM32L476RET6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)
STM32L476RET6 from STMicroelectronics, in a LQFP-64(10x10). 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 | VBAT | power_in | Backup battery supply voltage (1.55-3.6V) powering RTC and 32x32-bit backup registers |
| 2 | PC13 | bidirectional | GPIO port C pin 13, 5V tolerant, supports RTC tamper/timestamp/wakeup alternate functions |
| 3 | PC14 | bidirectional | GPIO port C pin 14 (32 kHz oscillator input), 5V tolerant, analog input in reset state |
| 4 | PC15 | bidirectional | GPIO port C pin 15 (32 kHz oscillator output), 5V tolerant, analog input in reset state |
| 5 | PH0 | bidirectional | GPIO port H pin 0 (main oscillator input), 5V tolerant, analog input in reset state |
| 6 | PH1 | bidirectional | GPIO port H pin 1 (main oscillator output), 5V tolerant, analog input in reset state |
| 7 | NRST | bidirectional | System reset pin (active low) with embedded weak pull-up resistor (25-55 kΩ) |
| 8 | PC0 | bidirectional | GPIO port C pin 0, 5V tolerant, supports LPTIM1/I2C3/DFSDM/LPUART1/LCD, ADC123_IN1 input |
| 9 | PC1 | bidirectional | GPIO port C pin 1, 5V tolerant, supports LPTIM1/I2C3/DFSDM/LPUART1/LCD, ADC123_IN2 input |
| 10 | PC2 | bidirectional | GPIO port C pin 2, 5V tolerant, supports LPTIM1/SPI2/DFSDM/LCD, ADC123_IN3 input |
| 11 | PC3 | bidirectional | GPIO port C pin 3, 5V tolerant, supports LPTIM1/SPI2/LCD_VLCD/SAI1/LPTIM2, ADC123_IN4 input |
| 12 | VSSA | power_in | Analog ground reference for ADC/DAC/OPAMP/COMP, must be connected to VSS |
| 13 | VDDA | power_in | Analog supply voltage (1.62-3.6V minimum 1.8V for DAC/OPAMP, 2.4V for VREFBUF) |
| 14 | PA0 | bidirectional | GPIO port A pin 0, 5V tolerant, supports TIM2/TIM5/TIM8/USART2/UART4/SAI1, OPAMP1_VINP, ADC12_IN5, RTC_TAMP2/WKUP1 |
| 15 | PA1 | bidirectional | GPIO port A pin 1, 5V tolerant, supports TIM2/TIM5/USART2/UART4/LCD/TIM15, OPAMP1_VINM, ADC12_IN6 |
| 16 | PA2 | bidirectional | GPIO port A pin 2, 5V tolerant, supports TIM2/TIM5/USART2/LCD/SAI2/TIM15, ADC12_IN7, WKUP4/LSCO |
| 17 | PA3 | bidirectional | GPIO port A pin 3, 3.6V tolerant, supports TIM2/TIM5/USART2/LCD/TIM15, OPAMP1_VOUT, ADC12_IN8 |
| 18 | VSS | power_in | Digital ground connection for power supply domain |
| 19 | VDD | power_in | Main supply voltage (1.71-3.6V) for MCU core operation |
| 20 | PA4 | bidirectional | GPIO port A pin 4, 3.6V tolerant, supports SPI1/SPI3/USART2/SAI1/LPTIM2, ADC12_IN9, DAC1_OUT1 |
| 21 | PA5 | bidirectional | GPIO port A pin 5, 3.6V tolerant, supports TIM2/TIM8/SPI1/LPTIM2, ADC12_IN10, DAC1_OUT2 |
| 22 | PA6 | bidirectional | GPIO port A pin 6, 5V tolerant, supports TIM1/TIM3/TIM8/SPI1/USART3/QUADSPI/LCD/TIM16, OPAMP2_VINP, ADC12_IN11, COMP2_BKIN |
| 23 | PA7 | bidirectional | GPIO port A pin 7, 5V tolerant, supports TIM1/TIM3/TIM8/SPI1/QUADSPI/LCD/TIM17, OPAMP2_VINM, ADC12_IN12 |
| 24 | PC4 | bidirectional | GPIO port C pin 4, 5V tolerant, supports USART3/LCD, COMP1_INM, ADC12_IN13 |
| 25 | PC5 | bidirectional | GPIO port C pin 5, 5V tolerant, supports USART3/LCD, COMP1_INP, ADC12_IN14, WKUP5 |
| 26 | PB0 | bidirectional | GPIO port B pin 0, 3.6V tolerant, supports TIM1/TIM3/TIM8/USART3/QUADSPI/LCD/COMP1, OPAMP2_VOUT, ADC12_IN15 |
| 27 | PB1 | bidirectional | GPIO port B pin 1, 5V tolerant, supports TIM1/TIM3/TIM8/DFSDM/USART3/QUADSPI/LCD/LPTIM2, COMP1_INM, ADC12_IN16 |
| 28 | PB2 | bidirectional | GPIO port B pin 2, 5V tolerant, supports RTC_OUT/LPTIM1/I2C3/DFSDM, COMP1_INP |
| 29 | PB10 | bidirectional | GPIO port B pin 10, 5V tolerant, supports TIM2/I2C2/SPI2/DFSDM/USART3/LPUART1/QUADSPI/LCD/COMP1/SAI1 |
| 30 | PB11 | bidirectional | GPIO port B pin 11, 5V tolerant, supports TIM2/I2C2/DFSDM/USART3/LPUART1/QUADSPI/LCD/COMP2 |
| 31 | VSS | power_in | Digital ground connection for power supply domain |
| 32 | VDD | power_in | Main supply voltage (1.71-3.6V) for MCU core operation |
| 33 | PB12 | bidirectional | GPIO port B pin 12, 5V tolerant, supports TIM1/TIM15/I2C2/SPI2/DFSDM/USART3/LPUART1/TSC/LCD/SWPMI1/SAI2 |
| 34 | PB13 | bidirectional | GPIO port B pin 13, 5V tolerant, supports TIM1/TIM15/I2C2/SPI2/DFSDM/USART3/LPUART1/TSC/LCD/SWPMI1/SAI2 |
| 35 | PB14 | bidirectional | GPIO port B pin 14, 5V tolerant, supports TIM1/TIM8/TIM15/I2C2/SPI2/DFSDM/USART3/TSC/LCD/SWPMI1/SAI2 |
| 36 | PB15 | bidirectional | GPIO port B pin 15, 5V tolerant, supports RTC_REFIN/TIM1/TIM8/TIM15/SPI2/DFSDM/TSC/LCD/SWPMI1/SAI2 |
| 37 | PC6 | bidirectional | GPIO port C pin 6, 5V tolerant, supports TIM3/TIM8/DFSDM/TSC/LCD/SDMMC1/SAI2 |
| 38 | PC7 | bidirectional | GPIO port C pin 7, 5V tolerant, supports TIM3/TIM8/DFSDM/TSC/LCD/SDMMC1/SAI2 |
| 39 | PC8 | bidirectional | GPIO port C pin 8, 5V tolerant, supports TIM3/TIM8/TSC/LCD/SDMMC1 |
| 40 | PC9 | bidirectional | GPIO port C pin 9, 5V tolerant, supports TIM3/TIM8/OTG_FS_NOE/LCD/SDMMC1/SAI2, TIM8_BKIN2_COMP1 |
| 41 | PA8 | bidirectional | GPIO port A pin 8, 5V tolerant, supports MCO/TIM1/USART1/OTG_FS_SOF/LCD/LPTIM2 |
| 42 | PA9 | bidirectional | GPIO port A pin 9, 5V tolerant with USB supply, supports TIM1/USART1/LCD/TIM15, OTG_FS_VBUS monitoring |
| 43 | PA10 | bidirectional | GPIO port A pin 10, 5V tolerant with USB supply, supports TIM1/USART1/OTG_FS_ID/LCD/TIM17 |
| 44 | PA11 | bidirectional | GPIO port A pin 11, USB supply (3.0-3.6V), supports TIM1/USART1/CAN1_RX/OTG_FS_DM, TIM1_BKIN2_COMP1 |
| 45 | PA12 | bidirectional | GPIO port A pin 12, USB supply (3.0-3.6V), supports TIM1/USART1/CAN1_TX/OTG_FS_DP |
| 46 | PA13 | bidirectional | JTAG/SWD debug pin (JTMS-SWDIO), 5V tolerant, internal pull-up activated after reset |
| 47 | VSS | power_in | Digital ground connection for power supply domain |
| 48 | VDDUSB | power_in | USB supply voltage (3.0-3.6V) for OTG_FS module operation |
| 49 | PA14 | bidirectional | JTAG/SWD debug clock pin (JTCK-SWCLK), 5V tolerant, internal pull-down activated after reset |
| 50 | PA15 | bidirectional | JTAG debug input pin (JTDI), 5V tolerant, supports TIM2/SPI1/SPI3/UART4/TSC/LCD/SAI2, internal pull-up after reset |
| 51 | PC10 | bidirectional | GPIO port C pin 10, 5V tolerant, supports SPI3/USART3/UART4/TSC/LCD/SDMMC1/SAI2 |
| 52 | PC11 | bidirectional | GPIO port C pin 11, 5V tolerant, supports SPI3/USART3/UART4/TSC/LCD/SDMMC1/SAI2 |
| 53 | PC12 | bidirectional | GPIO port C pin 12, 5V tolerant, supports SPI3/USART3/UART5/TSC/LCD/SDMMC1/SAI2 |
| 54 | PD2 | bidirectional | GPIO port D pin 2, 5V tolerant, supports TIM3/USART3/UART5/TSC/LCD/SDMMC1 |
| 55 | PB3 | bidirectional | JTAG debug output pin (JTDO-TRACESWO), 5V tolerant, supports TIM2/SPI1/SPI3/USART1/LCD/SAI1, COMP2_INM, internal pull-up after reset |
| 56 | PB4 | bidirectional | JTAG reset pin (NJTRST), 5V tolerant, supports TIM3/SPI1/SPI3/USART1/UART5/TSC/LCD/SAI1/TIM17, COMP2_INP, internal pull-up after reset |
| 57 | PB5 | bidirectional | GPIO port B pin 5, 5V tolerant, supports LPTIM1/TIM3/I2C1/SPI1/SPI3/USART1/UART5/TSC/LCD/COMP2/SAI1/TIM16 |
| 58 | PB6 | bidirectional | GPIO port B pin 6, 5V tolerant, supports LPTIM1/TIM4/TIM8/I2C1/DFSDM/USART1/TSC/SAI1/TIM16, COMP2_INP, TIM8_BKIN2_COMP2 |
| 59 | PB7 | bidirectional | GPIO port B pin 7, 5V tolerant, supports LPTIM1/TIM4/TIM8/I2C1/DFSDM/USART1/UART4/TSC/LCD/FMC/SAI1/TIM17, COMP2_INM, PVD_IN |
| 60 | BOOT0 | input | Boot configuration input pin (active high, 0-9V), selects between main Flash (low) or system bootloader (high) |
| 61 | PB8 | bidirectional | GPIO port B pin 8, 5V tolerant, supports TIM4/I2C1/DFSDM/CAN1_RX/LCD/SDMMC1/SAI1/TIM16 |
| 62 | PB9 | bidirectional | GPIO port B pin 9, 5V tolerant, supports IR_OUT/TIM4/I2C1/SPI2/DFSDM/CAN1_TX/LCD/SDMMC1/SAI1/TIM17 |
| 63 | VSS | power_in | Digital ground connection for power supply domain |
| 64 | VDD | power_in | Main supply voltage (1.71-3.6V) for MCU core operation |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-64(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 64 |
CAD (KiCad official)
- Symbol:
STM32L476RET6 - Footprint:
Package_QFP:LQFP-64_10x10mm_P0.5mm - 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files:
stm32l476ret6-etched.step/stm32l476ret6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l476ret6.step/stm32l476ret6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (232 pp, sha256
9cc18092f1a2d4f2, retrieved 2026-09-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).