STMicroelectronics · structured pinout

STM32 Nucleo-64 NUCLEO-F446RE (MB1136) pinout

Name: STM32 Nucleo-64 NUCLEO-F446RE (MB1136) pinout with per-pin electrical limits
Creator: Xirkit

All 114 pins of the STM32 Nucleo-64 NUCLEO-F446RE (MB1136), each mapped to the STM32F446RET6 pad it routes to, with its functions and — for 72 pins — the electrical limits from the chip datasheet. Every number cites its page and table.

114 pins documented72 with electrical limits72 gpio10 power out5 power in4 control11 ground9 nc3 debugcomplete pinout

Pin table

STM32 Nucleo-64 NUCLEO-F446RE (MB1136) pins, functions and electrical limits

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VIH/VIL: input thresholds · VOH/VOL: output levels · IOH/IOL: output current. Values apply to the chip pad each pin routes to, under the conditions cited in the source.
Pin	Position	Kind	Chip pad	Functions	VIH	VIL	VOH	VOL	IOH	IOL	5 V tolerant	Abs max	Source
PC10	CN7 · CN7-1	gpio	PC10	PC10, SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, QUADSPI_BK1_IO1, SDIO_D2, DCMI_D8, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC11	CN7 · CN7-2	gpio	PC11	PC11, SPI3_MISO, USART3_RX, UART4_RX, QUADSPI_BK2_NCS, SDIO_D3, DCMI_D4, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC9	CN10 · CN10-1	gpio	PC9	PC9, MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, UART5_CTS, QUADSPI_BK1_IO0, SDIO_D1, DCMI_D3, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC8	CN10 · CN10-2	gpio	PC8	PC8, TRACED0, TIM3_CH3, TIM8_CH3, UART5_RTS, USART6_CK, SDIO_D0, DCMI_D2, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC12	CN7 · CN7-3	gpio	PC12	PC12, I2C2_SDA, SPI3_MOSI/I2S3_SD, USART3_CK, UART5_TX, SDIO_CK, DCMI_D9, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PD2	CN7 · CN7-4	gpio	PD2	PD2, TIM3_ETR, UART5_RX, SDIO_CMD, DCMI_D11, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB8	CN10 · CN10-3	gpio	PB8	PB8, TIM2_CH1/TIM2_ETR, TIM4_CH3, TIM10_CH1, I2C1_SCL, CAN1_RX, SDIO_D4, DCMI_D6, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC6	CN10 · CN10-4	gpio	PC6	PC6, TIM3_CH1, TIM8_CH1, FMPI2C1_SCL, I2S2_MCK, USART6_TX, SDIO_D6, DCMI_D0, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
VDD	CN7 · CN7-5	power out		power_out									p.27 table 27_1
E5V	CN7 · CN7-6	power in		power_in									p.22 table 22_1
PB9	CN10 · CN10-5	gpio	PB9	PB9, TIM2_CH2, TIM4_CH4, TIM11_CH1, I2C1_SDA, SPI2_NSS/I2S2_WS, SAI1_FS_B, CAN1_TX, SDIO_D5, DCMI_D7, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC5	CN10 · CN10-6	gpio	PC5	PC5, USART3_RX, SPDIFRX_IN3, FMC_SDCKE0, EVENTOUT, ADC12_IN15	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
BOOT0	CN7 · CN7-7	control	BOOT0	VPP, BOOT0 (boot mode select)
GND	CN7 · CN7-8	ground		ground
AVDD	CN10 · CN10-7	power out		power_out
U5V	CN10 · CN10-8	power out		power_out									p.23
-	CN7 · CN7-9	nc		no_connect
-	CN7 · CN7-10	nc		no_connect
GND	CN10 · CN10-9	ground		ground
-	CN10 · CN10-10	nc		no_connect
-	CN7 · CN7-11	nc		no_connect
IOREF	CN7 · CN7-12	power out		power_out									p.27 table 27_1
PA5	CN10 · CN10-11	gpio	PA5	PA5, LD2 user LED (green), TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK/I2S1_CK, OTG_HS_ULPI_CK, EVENTOUT, ADC12_IN5, DAC_OUT2	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	no	-0.3–3.6 V	STM32F446RET6 datasheet p.74 table 74_1
PA12	CN10 · CN10-12	gpio	PA12	PA12, TIM1_ETR, USART1_RTS, SAI2_FS_B, CAN1_TX, OTG_FS_DP, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA13	CN7 · CN7-13	gpio	PA13	PA13, SWD to on-board ST-LINK/V2-1, JTMS-SWDIO, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
NRST	CN7 · CN7-14	control	NRST	RESET (B2 button, ST-LINK), NRST (reset, weak pull-up)
PA6	CN10 · CN10-13	gpio	PA6	PA6, TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, I2S2_MCK, TIM13_CH1, DCMI_PIXCLK, EVENTOUT, ADC12_IN6	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA11	CN10 · CN10-14	gpio	PA11	PA11, TIM1_CH4, USART1_CTS, CAN1_RX, OTG_FS_DM, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA14	CN7 · CN7-15	gpio	PA14	PA14, SWD to on-board ST-LINK/V2-1, JTCK-SWCLK, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
+3.3V	CN7 · CN7-16	power out		power_out									p.23 table 23_1
PA7	CN10 · CN10-15	gpio	PA7	PA7, TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI/I2S1_SD, TIM14_CH1, FMC_SDNWE, EVENTOUT, ADC12_IN7	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB12	CN10 · CN10-16	gpio	PB12	PB12, TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, SAI1_SCK_B, USART3_CK, CAN2_RX, OTG_HS_ULPI_D5, OTG_HS_ID, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA15	CN7 · CN7-17	gpio	PA15	PA15, JTDI, TIM2_CH1/TIM2_ETR, HDMI_CEC, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, UART4_RTS, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
+5V	CN7 · CN7-18	power out		power_out									p.23
PB6	CN10 · CN10-17	gpio	PB6	PB6, TIM4_CH1, HDMI_CEC, I2C1_SCL, USART1_TX, CAN2_TX, QUADSPI_BK1_NCS, FMC_SDNE1, DCMI_D5, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
-	CN10 · CN10-18	nc		no_connect
GND	CN7 · CN7-19	ground		ground
GND	CN7 · CN7-20	ground		ground
PC7	CN10 · CN10-19	gpio	PC7	PC7, TIM3_CH2, TIM8_CH2, FMPI2C1_SDA, SPI2_SCK/I2S2_CK, I2S3_MCK, SPDIFRX_IN1, USART6_RX, SDIO_D7, DCMI_D1, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
GND	CN10 · CN10-20	ground		ground
PB7	CN7 · CN7-21	gpio	PB7	PB7, TIM4_CH2, I2C1_SDA, USART1_RX, SPDIFRX_IN0, FMC_NL, DCMI_VSYNC, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
GND	CN7 · CN7-22	ground		ground
PA9	CN10 · CN10-21	gpio	PA9	PA9, TIM1_CH2, I2C3_SMBA, SPI2_SCK/I2S2_CK, SAI1_SD_B, USART1_TX, DCMI_D0, EVENTOUT, OTG_FS_VBUS	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB2	CN10 · CN10-22	gpio	PB2	PB2, TIM2_CH4, SAI1_SD_A, SPI3_MOSI/I2S3_SD, QUADSPI_CLK, OTG_HS_ULPI_D4, SDIO_CK, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC13	CN7 · CN7-23	gpio	PC13	PC13, B1 USER button, EVENTOUT, TAMP_1/WKUP1	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
VIN	CN7 · CN7-24	power in		power_in									p.22 table 22_1
PA8	CN10 · CN10-23	gpio	PA8	PA8, MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB1	CN10 · CN10-24	gpio	PB1	PB1, TIM1_CH3N, TIM3_CH4, TIM8_CH3N, OTG_HS_ULPI_D2, SDIO_D2, EVENTOUT, ADC12_IN9	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC14	CN7 · CN7-25	gpio	PC14	PC14, EVENTOUT, OSC32_IN	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
-	CN7 · CN7-26	nc		no_connect
PB10	CN10 · CN10-25	gpio	PB10	PB10, TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, SAI1_SCK_A, USART3_TX, OTG_HS_ULPI_D3, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB15	CN10 · CN10-26	gpio	PB15	PB15, RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI/I2S2_SD, TIM12_CH2, OTG_HS_DP, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC15	CN7 · CN7-27	gpio	PC15	PC15, EVENTOUT, OSC32_OUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA0	CN7 · CN7-28	gpio	PA0	PA0, TIM2_CH1/TIM2_ETR, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX, EVENTOUT, ADC123_IN0, WKUP0/TAMP_2	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB4	CN10 · CN10-27	gpio	PB4	PB4, NJTRST, TIM3_CH1, I2C3_SDA, SPI1_MISO, SPI3_MISO, SPI2_NSS/I2S2_WS, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB14	CN10 · CN10-28	gpio	PB14	PB14, TIM1_CH2N, TIM8_CH2N, SPI2_MISO, USART3_RTS, TIM12_CH1, OTG_HS_DM, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PH0	CN7 · CN7-29	gpio	PH0	PH0, EVENTOUT, OSC_IN	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA1	CN7 · CN7-30	gpio	PA1	PA1, TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, QUADSPI_BK1_IO3, SAI2_MCLK_B, EVENTOUT, ADC123_IN1	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB5	CN10 · CN10-29	gpio	PB5	PB5, TIM3_CH2, I2C1_SMBA, SPI1_MOSI/I2S1_SD, SPI3_MOSI/I2S3_SD, CAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB13	CN10 · CN10-30	gpio	PB13	PB13, TIM1_CH1N, SPI2_SCK/I2S2_CK, USART3_CTS, CAN2_TX, OTG_HS_ULPI_D6, EVENTOUT, OTG_HS_VBUS	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PH1	CN7 · CN7-31	gpio	PH1	PH1, EVENTOUT, OSC_OUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA4	CN7 · CN7-32	gpio	PA4	PA4, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC, EVENTOUT, ADC12_IN4, DAC_OUT1	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	no	-0.3–3.6 V	STM32F446RET6 datasheet p.74 table 74_1
PB3	CN10 · CN10-31	gpio	PB3	PB3, JTDO/TRACESWO, TIM2_CH2, I2C2_SDA, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
AGND	CN10 · CN10-32	ground		ground
VBAT	CN7 · CN7-33	power in	VBAT	power_in									STM32F446RET6 datasheet p.76 table 76_1
PB0	CN7 · CN7-34	gpio	PB0	PB0, TIM1_CH2N, TIM3_CH3, TIM8_CH2N, SPI3_MOSI/I2S3_SD, UART4_CTS, OTG_HS_ULPI_D1, SDIO_D1, EVENTOUT, ADC12_IN8	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA10	CN10 · CN10-33	gpio	PA10	PA10, TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC4	CN10 · CN10-34	gpio	PC4	PC4, I2S1_MCK, SPDIFRX_IN2, FMC_SDNE0, EVENTOUT, ADC12_IN14	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC2	CN7 · CN7-35	gpio	PC2	PC2, SPI2_MISO, OTG_HS_ULPI_DIR, FMC_SDNE0, EVENTOUT, ADC123_IN12	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC1	CN7 · CN7-36	gpio	PC1	PC1, SPI3_MOSI/I2S3_SD, SAI1_SD_A, SPI2_MOSI/I2S2_SD, EVENTOUT, ADC123_IN11	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA2	CN10 · CN10-35	gpio	PA2	PA2, ST-LINK VCP USART2_TX (default), TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, SAI2_SCK_B, EVENTOUT, ADC123_IN2	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
-	CN10 · CN10-36	nc		no_connect
PC3	CN7 · CN7-37	gpio	PC3	PC3, SPI2_MOSI/I2S2_SD, OTG_HS_ULPI_NXT, FMC_SDCKE0, EVENTOUT, ADC123_IN13	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC0	CN7 · CN7-38	gpio	PC0	PC0, SAI1_MCLK_B, OTG_HS_ULPI_STP, FMC_SDNWE, EVENTOUT, ADC123_IN10	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA3	CN10 · CN10-37	gpio	PA3	PA3, ST-LINK VCP USART2_RX (default), TIM2_CH4, TIM5_CH4, TIM9_CH2, SAI1_FS_A, USART2_RX, OTG_HS_ULPI_D0, EVENTOUT, ADC123_IN3	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
-	CN10 · CN10-38	nc		no_connect
NC	CN6 · CN6-1	nc		no_connect
IOREF	CN6 · CN6-2	power out		power_out									p.27 table 27_1
NRST	CN6 · CN6-3	control	NRST	RESET, RESET (B2 button, ST-LINK), NRST (reset, weak pull-up)
+3.3V	CN6 · CN6-4	power out		power_out									p.23 table 23_1
+5V	CN6 · CN6-5	power out		power_out									p.23
GND	CN6 · CN6-6	ground		ground
GND	CN6 · CN6-7	ground		ground
VIN	CN6 · CN6-8	power in		power_in									p.22 table 22_1
PA0	CN8 · CN8-1	gpio	PA0	PA0, A0, ADC123_IN0, TIM2_CH1/TIM2_ETR, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX, EVENTOUT, WKUP0/TAMP_2	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA1	CN8 · CN8-2	gpio	PA1	PA1, A1, ADC123_IN1, TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, QUADSPI_BK1_IO3, SAI2_MCLK_B, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA4	CN8 · CN8-3	gpio	PA4	PA4, A2, ADC12_IN4, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC, EVENTOUT, DAC_OUT1	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	no	-0.3–3.6 V	STM32F446RET6 datasheet p.74 table 74_1
PB0	CN8 · CN8-4	gpio	PB0	PB0, A3, ADC12_IN8, TIM1_CH2N, TIM3_CH3, TIM8_CH2N, SPI3_MOSI/I2S3_SD, UART4_CTS, OTG_HS_ULPI_D1, SDIO_D1, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC1	CN8 · CN8-5	gpio	PC1	PC1, A4, ADC123_IN11 (PC1) or I2C1_SDA (PB9), SPI3_MOSI/I2S3_SD, SAI1_SD_A, SPI2_MOSI/I2S2_SD, EVENTOUT, ADC123_IN11	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC0	CN8 · CN8-6	gpio	PC0	PC0, A5, ADC123_IN10 (PC0) or I2C1_SCL (PB8), SAI1_MCLK_B, OTG_HS_ULPI_STP, FMC_SDNWE, EVENTOUT, ADC123_IN10	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB8	CN5 · CN5-10	gpio	PB8	PB8, D15, I2C1_SCL, TIM2_CH1/TIM2_ETR, TIM4_CH3, TIM10_CH1, CAN1_RX, SDIO_D4, DCMI_D6, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB9	CN5 · CN5-9	gpio	PB9	PB9, D14, I2C1_SDA, TIM2_CH2, TIM4_CH4, TIM11_CH1, SPI2_NSS/I2S2_WS, SAI1_FS_B, CAN1_TX, SDIO_D5, DCMI_D7, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
AREF	CN5 · CN5-8	power out		power_out
GND	CN5 · CN5-7	ground		ground
PA5	CN5 · CN5-6	gpio	PA5	PA5, D13, SPI1_SCK, LD2 user LED (green), TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK/I2S1_CK, OTG_HS_ULPI_CK, EVENTOUT, ADC12_IN5, DAC_OUT2	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	no	-0.3–3.6 V	STM32F446RET6 datasheet p.74 table 74_1
PA6	CN5 · CN5-5	gpio	PA6	PA6, D12, SPI1_MISO, TIM1_BKIN, TIM3_CH1, TIM8_BKIN, I2S2_MCK, TIM13_CH1, DCMI_PIXCLK, EVENTOUT, ADC12_IN6	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA7	CN5 · CN5-4	gpio	PA7	PA7, D11, TIM14_CH1 \, TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI/I2S1_SD, TIM14_CH1, FMC_SDNWE, EVENTOUT, ADC12_IN7	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB6	CN5 · CN5-3	gpio	PB6	PB6, D10, TIM4_CH1 \, TIM4_CH1, HDMI_CEC, I2C1_SCL, USART1_TX, CAN2_TX, QUADSPI_BK1_NCS, FMC_SDNE1, DCMI_D5, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PC7	CN5 · CN5-2	gpio	PC7	PC7, D9, TIM8_CH2, TIM3_CH2, FMPI2C1_SDA, SPI2_SCK/I2S2_CK, I2S3_MCK, SPDIFRX_IN1, USART6_RX, SDIO_D7, DCMI_D1, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA9	CN5 · CN5-1	gpio	PA9	PA9, D8, TIM1_CH2, I2C3_SMBA, SPI2_SCK/I2S2_CK, SAI1_SD_B, USART1_TX, DCMI_D0, EVENTOUT, OTG_FS_VBUS	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA8	CN9 · CN9-8	gpio	PA8	PA8, D7, MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB10	CN9 · CN9-7	gpio	PB10	PB10, D6, TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, SAI1_SCK_A, USART3_TX, OTG_HS_ULPI_D3, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB4	CN9 · CN9-6	gpio	PB4	PB4, D5, TIM3_CH1, NJTRST, I2C3_SDA, SPI1_MISO, SPI3_MISO, SPI2_NSS/I2S2_WS, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB5	CN9 · CN9-5	gpio	PB5	PB5, D4, TIM3_CH2, I2C1_SMBA, SPI1_MOSI/I2S1_SD, SPI3_MOSI/I2S3_SD, CAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PB3	CN9 · CN9-4	gpio	PB3	PB3, D3, TIM2_CH2, JTDO/TRACESWO, I2C2_SDA, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA10	CN9 · CN9-3	gpio	PA10	PA10, D2, TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1, EVENTOUT	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA2	CN9 · CN9-2	gpio	PA2	PA2, D1, USART2_TX, ST-LINK VCP USART2_TX (default), TIM2_CH3, TIM5_CH3, TIM9_CH1, SAI2_SCK_B, EVENTOUT, ADC123_IN2	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
PA3	CN9 · CN9-1	gpio	PA3	PA3, D0, USART2_RX, ST-LINK VCP USART2_RX (default), TIM2_CH4, TIM5_CH4, TIM9_CH2, SAI1_FS_A, OTG_HS_ULPI_D0, EVENTOUT, ADC123_IN3	≥ 2.31 V	≤ 0.99 V	≥ 2.9 V	≤ 0.4 V	≤ 25 mA	≤ 25 mA	yes	-0.3–5.5 V	STM32F446RET6 datasheet p.74 table 74_1
VDD_TARGET	CN4 · CN4-1	power in		power_in
SWCLK	CN4 · CN4-2	debug	PA14	ST-LINK SWCLK (SWD clock)
GND	CN4 · CN4-3	ground		ground
SWDIO	CN4 · CN4-4	debug	PA13	ST-LINK SWDIO (SWD data input/output)
NRST	CN4 · CN4-5	control	NRST	ST-LINK NRST (RESET of target STM32), NRST (reset, weak pull-up)
SWO	CN4 · CN4-6	debug		ST-LINK SWO (Reserved)

Answers from the record

STM32 Nucleo-64 NUCLEO-F446RE (MB1136) pinout FAQ

What microcontroller does the STM32 Nucleo-64 NUCLEO-F446RE (MB1136) use?

The STM32 Nucleo-64 NUCLEO-F446RE (MB1136) is built around the STM32F446RET6, alongside STM32F103CBT6 (ST-LINK/V2-1), LD39050PU33R, ABS25-32.768KHZ-6-T (MB1136 C-03+).

How many GPIO pins does the STM32 Nucleo-64 NUCLEO-F446RE (MB1136) have?

50 GPIO pins are exposed. Xirkit documents 114 board pins, 72 of them with pin-level electrical limits.

Are the STM32 Nucleo-64 NUCLEO-F446RE (MB1136) I/O pins 5 V tolerant?

68 pins are 5 V tolerant and 4 are not — check each pin in the pinout table before connecting 5 V signals.

How much current can a STM32 Nucleo-64 NUCLEO-F446RE (MB1136) GPIO pin source?

Documented output-high current per pin: ≤ 25 mA. Values are traced to the chip datasheet; see the pinout table for per-pin limits and conditions.

What voltage powers the STM32 Nucleo-64 NUCLEO-F446RE (MB1136)?

Supply range 1.65–12 V. Power inputs: E5V (4.75–5.25 V), VIN (7–12 V), VBAT (1.65–3.6 V), VIN (7–12 V), VDD_TARGET.

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