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STM32L412RBT6P
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
markdownSTM32L412RBT6P
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)
STM32L412RBT6P 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 supply (1.55 V to 3.6 V) that powers the RTC and the 32x32-bit backup registers in VBAT mode. |
| 2 | PC13 | bidirectional | 5 V tolerant (FT) I/O; additional functions RTC_TAMP1/RTC_TS/RTC_OUT1/WKUP2 and alternate function EVENTOUT. |
| 3 | PC14-OSC32_IN | bidirectional | 5 V tolerant (FT) I/O; additional function OSC32_IN (32 kHz LSE crystal input) and alternate function EVENTOUT. |
| 4 | PC15-OSC32_OUT | bidirectional | 5 V tolerant (FT) I/O; additional function OSC32_OUT (32 kHz LSE crystal output) and alternate function EVENTOUT. |
| 5 | PH0-OSC_IN | bidirectional | 5 V tolerant (FT) I/O; additional function OSC_IN (HSE oscillator input) and alternate function EVENTOUT. |
| 6 | PH1-OSC_OUT | bidirectional | 5 V tolerant (FT) I/O; additional function OSC_OUT (HSE oscillator output) and alternate function EVENTOUT. |
| 7 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor (RPU 25 kΩ to 55 kΩ). |
| 8 | PC0 | bidirectional | FT_fa I/O (5 V tolerant, Fm+ capable, analog switch supplied by VDDA); alternate functions include TRACECK, LPTIM1_IN1, I2C3_SCL, LPUART1_RX, LPTIM2_IN1 and EVENTOUT, additional function ADC12_IN1. |
| 9 | PC1 | bidirectional | FT_fa I/O (5 V tolerant, Fm+ capable, analog switch supplied by VDDA); alternate functions include TRACED0, LPTIM1_OUT, I2C3_SDA, LPUART1_TX and EVENTOUT, additional function ADC12_IN2. |
| 10 | PC2 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions LPTIM1_IN2, SPI2_MISO and EVENTOUT, additional function ADC12_IN3. |
| 11 | PC3 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions LPTIM1_ETR, SPI2_MOSI, LPTIM2_ETR and EVENTOUT, additional function ADC12_IN4. |
| 12 | VSSA/VREF- | power_in | Analog ground and ADC negative reference voltage (VREF-), which can be connected internally to VSSA depending on the package. |
| 13 | VDDA/VREF+ | power_in | Analog supply, 1.62 V to 3.6 V when ADC or COMP is used and 1.8 V to 3.6 V when OPAMP is used, also serving as ADC positive reference VREF+ on this package. |
| 14 | PA0 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions TIM2_CH1, USART2_CTS, COMP1_OUT, TIM2_ETR and EVENTOUT, additional functions OPAMP1_VINP, COMP1_INM, ADC1_IN5, RTC_TAMP2/WKUP1. |
| 15 | PA1 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions TIM2_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE, TIM15_CH1N and EVENTOUT, additional functions OPAMP1_VINM, COMP1_INP, ADC1_IN6. |
| 16 | PA2 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions TIM2_CH3, USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS, TIM15_CH1 and EVENTOUT, additional functions ADC12_IN7 and WKUP4/LSCO. |
| 17 | PA3 | bidirectional | TT_a I/O (3.6 V tolerant, analog switch supplied by VDDA); alternate functions TIM2_CH4, USART2_RX, LPUART1_RX, QUADSPI_CLK, TIM15_CH2 and EVENTOUT, additional functions OPAMP1_VOUT and ADC12_IN8. |
| 18 | VSS | power_in | Ground pin, which must always be connected to the external ground in the permitted range. |
| 19 | VDD | power_in | Main supply, standard operating voltage 1.71 V to 3.6 V, which must always be connected within the permitted range. |
| 20 | PA4 | bidirectional | TT_a I/O (3.6 V tolerant, analog switch supplied by VDDA); alternate functions SPI1_NSS, USART2_CK, LPTIM2_OUT and EVENTOUT, additional functions COMP1_INM and ADC12_IN9. |
| 21 | PA5 | bidirectional | TT_a I/O (3.6 V tolerant, analog switch supplied by VDDA); alternate functions TIM2_CH1, TIM2_ETR, SPI1_SCK, LPTIM2_ETR and EVENTOUT, additional functions COMP1_INM and ADC12_IN10. |
| 22 | PA6 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions TIM1_BKIN, SPI1_MISO, COMP1_OUT, USART3_CTS, LPUART1_CTS, QUADSPI_BK1_IO3, TIM16_CH1 and EVENTOUT, additional function ADC12_IN11. |
| 23 | PA7 | bidirectional | FT_fa I/O (5 V tolerant, Fm+ capable, analog switch supplied by VDDA); alternate functions TIM1_CH1N, I2C3_SCL, SPI1_MOSI, QUADSPI_BK1_IO2 and EVENTOUT, additional function ADC12_IN12. |
| 24 | PC4 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate function USART3_TX and EVENTOUT, additional functions COMP1_INM and ADC12_IN13. |
| 25 | PB0 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions TRACED0, TIM1_CH2N, SPI1_NSS, USART3_CK, QUADSPI_BK1_IO1, COMP1_OUT and EVENTOUT, additional function ADC12_IN15. |
| 26 | PB1 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions TRACED1, TIM1_CH3N, USART3_RTS_DE, LPUART1_RTS_DE, QUADSPI_BK1_IO0, LPTIM2_IN1 and EVENTOUT, additional functions COMP1_INM and ADC12_IN16. |
| 27 | PB2 | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA); alternate functions LPTIM1_OUT, I2C3_SMBA and EVENTOUT, additional functions COMP1_INP and RTC_OUT2. |
| 28 | PB10 | bidirectional | FT_f I/O (5 V tolerant, Fm+ capable); alternate functions TIM2_CH3, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, TSC_SYNC, QUADSPI_CLK, COMP1_OUT and EVENTOUT. |
| 29 | PB11 | bidirectional | FT_f I/O (5 V tolerant, Fm+ capable); alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, LPUART1_TX, QUADSPI_BK1_NCS and EVENTOUT. |
| 30 | VDD12 | power_in | Core supply from the external SMPS, 1.08 V to 1.32 V over the full frequency range (1.00 V minimum up to 26 MHz). |
| 31 | VSS | power_in | Ground pin, which must always be connected to the external ground in the permitted range. |
| 32 | VDD | power_in | Main supply, standard operating voltage 1.71 V to 3.6 V, which must always be connected within the permitted range. |
| 33 | PB12 | bidirectional | FT I/O (5 V tolerant); alternate functions TIM1_BKIN, I2C2_SMBA, SPI2_NSS, USART3_CK, LPUART1_RTS_DE, TSC_G1_IO1, TIM15_BKIN and EVENTOUT. |
| 34 | PB13 | bidirectional | FT_f I/O (5 V tolerant, Fm+ capable); alternate functions TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS, LPUART1_CTS, TSC_G1_IO2, TIM15_CH1N and EVENTOUT. |
| 35 | PB14 | bidirectional | FT_f I/O (5 V tolerant, Fm+ capable); alternate functions TIM1_CH2N, I2C2_SDA, SPI2_MISO, USART3_RTS_DE, TSC_G1_IO3, TIM15_CH1 and EVENTOUT. |
| 36 | PB15 | bidirectional | FT I/O (5 V tolerant); alternate functions RTC_REFIN, TIM1_CH3N, SPI2_MOSI, TSC_G1_IO4, TIM15_CH2 and EVENTOUT. |
| 37 | PC6 | bidirectional | FT I/O (5 V tolerant); alternate functions TSC_G4_IO1 and EVENTOUT. |
| 38 | PC7 | bidirectional | FT I/O (5 V tolerant); alternate functions TSC_G4_IO2 and EVENTOUT. |
| 39 | PC8 | bidirectional | FT I/O (5 V tolerant); alternate functions TSC_G4_IO3 and EVENTOUT. |
| 40 | PC9 | bidirectional | FT I/O (5 V tolerant); alternate functions TSC_G4_IO4, USB_NOE and EVENTOUT. |
| 41 | PA8 | bidirectional | FT I/O (5 V tolerant); alternate functions MCO, TIM1_CH1, USART1_CK, LPTIM2_OUT and EVENTOUT. |
| 42 | PA9 | bidirectional | FT_f I/O (5 V tolerant, Fm+ capable); alternate functions TIM1_CH2, I2C1_SCL, USART1_TX, TIM15_BKIN and EVENTOUT. |
| 43 | PA10 | bidirectional | FT_f I/O (5 V tolerant, Fm+ capable); alternate functions TIM1_CH3, I2C1_SDA, USART1_RX, USB_CRS_SYNC and EVENTOUT. |
| 44 | PA11 | bidirectional | FT_u I/O (5 V tolerant, USB function supplied by VDDUSB); alternate functions TIM1_CH4, TIM1_BKIN2, SPI1_MISO, COMP1_OUT, USART1_CTS, USB_DM, TIM1_BKIN2_COMP1 and EVENTOUT. |
| 45 | PA12 | bidirectional | FT_u I/O (5 V tolerant, USB function supplied by VDDUSB); alternate functions TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, USB_DP and EVENTOUT. |
| 46 | PA13 (JTMS/SWDIO) | bidirectional | FT I/O (5 V tolerant) whose default function is JTMS/SWDIO; alternate functions IR_OUT, USB_NOE and EVENTOUT. |
| 47 | VSS | power_in | Ground pin, which must always be connected to the external ground in the permitted range. |
| 48 | VDDUSB | power_in | USB supply, 3.0 V to 3.6 V when USB is used, and it supplies the FT_u I/Os PA11 and PA12. |
| 49 | PA14 (JTCK/SWCLK) | bidirectional | FT I/O (5 V tolerant) whose default function is JTCK/SWCLK; alternate functions LPTIM1_OUT, I2C1_SMBA and EVENTOUT. |
| 50 | PA15 (JTDI) | bidirectional | FT I/O (5 V tolerant) whose default function is JTDI; alternate functions TIM2_CH1, TIM2_ETR, USART2_RX, SPI1_NSS, USART3_RTS_DE, TSC_G3_IO1 and EVENTOUT. |
| 51 | PC10 | bidirectional | FT I/O (5 V tolerant); alternate functions TRACED1, USART3_TX, TSC_G3_IO2 and EVENTOUT. |
| 52 | PC11 | bidirectional | FT I/O (5 V tolerant); alternate functions USART3_RX, TSC_G3_IO3 and EVENTOUT. |
| 53 | PC12 | bidirectional | FT I/O (5 V tolerant); alternate functions TRACED3, USART3_CK, TSC_G3_IO4 and EVENTOUT. |
| 54 | PB3 (JTDO/TRACESWO) | bidirectional | FT_a I/O (5 V tolerant, analog switch supplied by VDDA) whose default function is JTDO/TRACESWO; alternate functions TIM2_CH2, SPI1_SCK, USART1_RTS_DE and EVENTOUT. |
| 55 | PB4 (NJTRST) | bidirectional | FT_fa I/O (5 V tolerant, Fm+ capable, analog switch supplied by VDDA) whose default function is NJTRST; alternate functions I2C3_SDA, SPI1_MISO, USART1_CTS, TSC_G2_IO1 and EVENTOUT. |
| 56 | PB5 | bidirectional | FT I/O (5 V tolerant); alternate functions TRACED2, LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, USART1_CK, TSC_G2_IO2, TIM16_BKIN and EVENTOUT. |
| 57 | PB6 | bidirectional | FT_fa I/O (5 V tolerant, Fm+ capable, analog switch supplied by VDDA); alternate functions TRACED3, LPTIM1_ETR, I2C1_SCL, USART1_TX, TSC_G2_IO3, TIM16_CH1N and EVENTOUT. |
| 58 | PB7 | bidirectional | FT_fa I/O (5 V tolerant, Fm+ capable, analog switch supplied by VDDA); alternate functions TRACECK, LPTIM1_IN2, I2C1_SDA, USART1_RX, TSC_G2_IO4 and EVENTOUT, additional function PVD_IN. |
| 59 | PH3-BOOT0 | bidirectional | FT I/O (5 V tolerant) whose default function is BOOT0 (boot mode selection); alternate function EVENTOUT. |
| 60 | PB8 | bidirectional | FT_f I/O (5 V tolerant, Fm+ capable); alternate functions I2C1_SCL, TIM16_CH1 and EVENTOUT. |
| 61 | PB9 | bidirectional | FT_f I/O (5 V tolerant, Fm+ capable); alternate functions IR_OUT, I2C1_SDA, SPI2_NSS and EVENTOUT. |
| 62 | VDD12 | power_in | Core supply from the external SMPS, 1.08 V to 1.32 V over the full frequency range (1.00 V minimum up to 26 MHz). |
| 63 | VSS | power_in | Ground pin, which must always be connected to the external ground in the permitted range. |
| 64 | VDD | power_in | Main supply, standard operating voltage 1.71 V to 3.6 V, which must always be connected within the permitted range. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-64(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 64 |
CAD (KiCad official)
- Symbol:
STM32L412RBT6P - Footprint:
Package_QFP:LQFP-64_10x10mm_P0.5mm - 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files:
stm32l412rbt6p-etched.step/stm32l412rbt6p-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l412rbt6p.step/stm32l412rbt6p.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (192 pp, sha256
469ab19caba48d70, 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).