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STM32F446ZET7

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STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-144(20x20). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.

componentembedded processors & controllersstm32f446zet7factory-2.0.0extractor-text
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Contents

README

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STM32F446ZET7

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-144(20x20)

STM32F446ZET7 from STMicroelectronics, in a LQFP-144(20x20). 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 PE2 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACECLK, SPI4_SCK, SAI1_MCLK_A, QUADSPI_BK1_IO2, FMC_A23, EVENTOUT.
2 PE3 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACED0, SAI1_SD_B, FMC_A19, EVENTOUT.
3 PE4 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACED1, SPI4_NSS, SAI1_FS_A, FMC_A20, DCMI_D4, EVENTOUT.
4 PE5 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACED2, TIM9_CH1, SPI4_MISO, SAI1_SCK_A, FMC_A21, DCMI_D6, EVENTOUT.
5 PE6 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACED3, TIM9_CH2, SPI4_MOSI, SAI1_SD_A, FMC_A22, DCMI_D7, EVENTOUT.
6 VBAT power_in Supply for the RTC, the 20x32-bit backup registers and the optional 4 KB backup SRAM (VBAT supply).
7 PC13 bidirectional 5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: TAMP_1/WKUP1.
8 PC14-OSC32_IN bidirectional 5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: OSC32_IN (32 kHz oscillator input for the RTC).
9 PC15-OSC32_OUT bidirectional 5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: OSC32_OUT (32 kHz oscillator output for the RTC).
10 PF0 bidirectional 5 V-tolerant I/O (FT); alternate functions: I2C2_SDA, FMC_A0, EVENTOUT.
11 PF1 bidirectional 5 V-tolerant I/O (FT); alternate functions: I2C2_SCL, FMC_A1, EVENTOUT.
12 PF2 bidirectional 5 V-tolerant I/O (FT); alternate functions: I2C2_SMBA, FMC_A2, EVENTOUT.
13 PF3 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A3, EVENTOUT; additional function: ADC3_IN9.
14 PF4 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A4, EVENTOUT; additional function: ADC3_IN14.
15 PF5 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A5, EVENTOUT; additional function: ADC3_IN15.
16 VSS power_in Ground pin.
17 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
18 PF6 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM10_CH1, SAI1_SD_B, QUADSPI_BK1_IO3, EVENTOUT; additional function: ADC3_IN4.
19 PF7 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM11_CH1, SAI1_MCLK_B, QUADSPI_BK1_IO2, EVENTOUT; additional function: ADC3_IN5.
20 PF8 bidirectional 5 V-tolerant I/O (FT); alternate functions: SAI1_SCK_B, TIM13_CH1, QUADSPI_BK1_IO0, EVENTOUT; additional function: ADC3_IN6.
21 PF9 bidirectional 5 V-tolerant I/O (FT); alternate functions: SAI1_FS_B, TIM14_CH1, QUADSPI_BK1_IO1, EVENTOUT; additional function: ADC3_IN7.
22 PF10 bidirectional 5 V-tolerant I/O (FT); alternate functions: DCMI_D11, EVENTOUT; additional function: ADC3_IN8.
23 PH0-OSC_IN bidirectional 5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: OSC_IN (crystal oscillator input).
24 PH1-OSC_OUT bidirectional 5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: OSC_OUT (crystal oscillator output).
25 NRST bidirectional Bidirectional reset pin with weak pull-up resistor (RST I/O structure).
26 PC0 bidirectional 5 V-tolerant I/O (FT); alternate functions: SAI1_MCLK_B, OTG_HS_ULPI_STP, FMC_SDNWE, EVENTOUT; additional function: ADC123_IN10.
27 PC1 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI3_MOSI/I2S3_SD, SAI1_SD_A, SPI2_MOSI/I2S2_SD, EVENTOUT; additional function: ADC123_IN11.
28 PC2 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI2_MISO, OTG_HS_ULPI_DIR, FMC_SDNE0, EVENTOUT; additional function: ADC123_IN12.
29 PC3 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI2_MOSI/I2S2_SD, OTG_HS_ULPI_NXT, FMC_SDCKE0, EVENTOUT; additional function: ADC123_IN13.
30 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
31 VSSA power_in Analog ground pin.
32 VREF+ power_in Input voltage reference VREF+ for the ADC and DAC.
33 VDDA power_in Analog supply pin; no voltage range for this pin is given in the datasheet text provided.
34 PA0-WKUP bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH1/TIM2_ETR, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX, EVENTOUT; additional functions: ADC123_IN0, WKUP0/TAMP_2.
35 PA1 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, QUADSPI_BK1_IO3, SAI2_MCLK_B, EVENTOUT; additional function: ADC123_IN1.
36 PA2 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, SAI2_SCK_B, EVENTOUT; additional function: ADC123_IN2.
37 PA3 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH4, TIM5_CH4, TIM9_CH2, SAI1_FS_A, USART2_RX, OTG_HS_ULPI_D0, EVENTOUT; additional function: ADC123_IN3.
38 VSS power_in Ground pin.
39 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
40 PA4 bidirectional 3.3 V-tolerant I/O (TTa) directly connected to the ADC; alternate functions: SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC, EVENTOUT; additional functions: ADC12_IN4, DAC_OUT1.
41 PA5 bidirectional 3.3 V-tolerant I/O (TTa) directly connected to the ADC; alternate functions: TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK/I2S1_CK, OTG_HS_ULPI_CK, EVENTOUT; additional functions: ADC12_IN5, DAC_OUT2.
42 PA6 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, I2S2_MCK, TIM13_CH1, DCMI_PIXCLK, EVENTOUT; additional function: ADC12_IN6.
43 PA7 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI/I2S1_SD, TIM14_CH1, FMC_SDNWE, EVENTOUT; additional function: ADC12_IN7.
44 PC4 bidirectional 5 V-tolerant I/O (FT); alternate functions: I2S1_MCK, SPDIFRX_IN2, FMC_SDNE0, EVENTOUT; additional function: ADC12_IN14.
45 PC5 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART3_RX, SPDIFRX_IN3, FMC_SDCKE0, EVENTOUT; additional function: ADC12_IN15.
46 PB0 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH2N, TIM3_CH3, TIM8_CH2N, SPI3_MOSI/I2S3_SD, UART4_CTS, OTG_HS_ULPI_D1, SDIO_D1, EVENTOUT; additional function: ADC12_IN8.
47 PB1 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH3N, TIM3_CH4, TIM8_CH3N, OTG_HS_ULPI_D2, SDIO_D2, EVENTOUT; additional function: ADC12_IN9.
48 PB2-BOOT1 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH4, SAI1_SD_A, SPI3_MOSI/I2S3_SD, QUADSPI_CLK, OTG_HS_ULPI_D4, SDIO_CK, EVENTOUT; BOOT1 is the function of this pin after reset-option configuration as printed in the table.
49 PF11 bidirectional 5 V-tolerant I/O (FT); alternate functions: SAI2_SD_B, FMC_SDNRAS, DCMI_D12, EVENTOUT.
50 PF12 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A6, EVENTOUT.
51 VSS power_in Ground pin.
52 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
53 PF13 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMPI2C1_SMBA, FMC_A7, EVENTOUT.
54 PF14 bidirectional 5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: FMPI2C1_SCL, FMC_A8, EVENTOUT.
55 PF15 bidirectional 5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: FMPI2C1_SDA, FMC_A9, EVENTOUT.
56 PG0 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A10, EVENTOUT.
57 PG1 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A11, EVENTOUT.
58 PE7 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_ETR, UART5_RX, QUADSPI_BK2_IO0, FMC_D4, EVENTOUT.
59 PE8 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH1N, UART5_TX, QUADSPI_BK2_IO1, FMC_D5, EVENTOUT.
60 PE9 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH1, QUADSPI_BK2_IO2, FMC_D6, EVENTOUT.
61 VSS power_in Ground pin.
62 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
63 PE10 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH2N, QUADSPI_BK2_IO3, FMC_D7, EVENTOUT.
64 PE11 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH2, SPI4_NSS, SAI2_SD_B, FMC_D8, EVENTOUT.
65 PE12 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH3N, SPI4_SCK, SAI2_SCK_B, FMC_D9, EVENTOUT.
66 PE13 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH3, SPI4_MISO, SAI2_FS_B, FMC_D10, EVENTOUT.
67 PE14 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH4, SPI4_MOSI, SAI2_MCLK_B, FMC_D11, EVENTOUT.
68 PE15 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_BKIN, FMC_D12, EVENTOUT.
69 PB10 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, SAI1_SCK_A, USART3_TX, OTG_HS_ULPI_D3, EVENTOUT.
70 PB11 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH4, I2C2_SDA, USART3_RX, SAI2_SD_A, EVENTOUT.
71 VCAP_1 power_in Voltage regulator external capacitor connection (VCAP_1), see the VCAP_1/VCAP_2 external capacitor conditions.
72 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
73 PB12 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, SAI1_SCK_B, USART3_CK, CAN2_RX, OTG_HS_ULPI_D5, OTG_HS_ID, EVENTOUT.
74 PB13 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH1N, SPI2_SCK/I2S2_CK, USART3_CTS, CAN2_TX, OTG_HS_ULPI_D6, EVENTOUT; additional function: OTG_HS_VBUS.
75 PB14 bidirectional 5 V-tolerant I/O (FT) supplied by VDDUSB; alternate functions: TIM1_CH2N, TIM8_CH2N, SPI2_MISO, USART3_RTS, TIM12_CH1, OTG_HS_DM, EVENTOUT.
76 PB15 bidirectional 5 V-tolerant I/O (FT) supplied by VDDUSB; alternate functions: RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI/I2S2_SD, TIM12_CH2, OTG_HS_DP, EVENTOUT.
77 PD8 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART3_TX, SPDIFRX_IN1, FMC_D13, EVENTOUT.
78 PD9 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART3_RX, FMC_D14, EVENTOUT.
79 PD10 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART3_CK, FMC_D15, EVENTOUT.
80 PD11 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMPI2C1_SMBA, USART3_CTS, QUADSPI_BK1_IO0, SAI2_SD_A, FMC_A16, EVENTOUT.
81 PD12 bidirectional 5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM4_CH1, FMPI2C1_SCL, USART3_RTS, QUADSPI_BK1_IO1, SAI2_FS_A, FMC_A17, EVENTOUT.
82 PD13 bidirectional 5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM4_CH2, FMPI2C1_SDA, QUADSPI_BK1_IO3, SAI2_SCK_A, FMC_A18, EVENTOUT.
83 VSS power_in Ground pin.
84 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
85 PD14 bidirectional 5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM4_CH3, FMPI2C1_SCL, SAI2_SCK_A, FMC_D0, EVENTOUT.
86 PD15 bidirectional 5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM4_CH4, FMPI2C1_SDA, FMC_D1, EVENTOUT.
87 PG2 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A12, EVENTOUT.
88 PG3 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A13, EVENTOUT.
89 PG4 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A14/FMC_BA0, EVENTOUT.
90 PG5 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_A15/FMC_BA1, EVENTOUT.
91 PG6 bidirectional 5 V-tolerant I/O (FT); alternate functions: QUADSPI_BK1_NCS, DCMI_D12, EVENTOUT.
92 PG7 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART6_CK, FMC_INT, DCMI_D13, EVENTOUT.
93 PG8 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPDIFRX_IN2, USART6_RTS, FMC_SDCLK, EVENTOUT.
94 VSS power_in Ground pin.
95 VDDUSB power_in Dedicated USB power rail enabling the on-chip USB PHYs to operate across the entire MCU supply range; also supplies PA11, PA12, PB14 and PB15.
96 PC6 bidirectional 5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM3_CH1, TIM8_CH1, FMPI2C1_SCL, I2S2_MCK, USART6_TX, SDIO_D6, DCMI_D0, EVENTOUT.
97 PC7 bidirectional 5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM3_CH2, TIM8_CH2, FMPI2C1_SDA, SPI2_SCK/I2S2_CK, I2S3_MCK, SPDIFRX_IN1, USART6_RX, SDIO_D7, DCMI_D1, EVENTOUT.
98 PC8 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACED0, TIM3_CH3, TIM8_CH3, UART5_RTS, USART6_CK, SDIO_D0, DCMI_D2, EVENTOUT.
99 PC9 bidirectional 5 V-tolerant I/O (FT); alternate functions: MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, UART5_CTS, QUADSPI_BK1_IO0, SDIO_D1, DCMI_D3, EVENTOUT.
100 PA8 bidirectional 5 V-tolerant I/O (FT); alternate functions: MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF, EVENTOUT.
101 PA9 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH2, I2C3_SMBA, SPI2_SCK/I2S2_CK, SAI1_SD_B, USART1_TX, DCMI_D0, EVENTOUT; additional function: OTG_FS_VBUS.
102 PA10 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1, EVENTOUT.
103 PA11 bidirectional 5 V-tolerant I/O (FT) supplied by VDDUSB; alternate functions: TIM1_CH4, USART1_CTS, CAN1_RX, OTG_FS_DM, EVENTOUT.
104 PA12 bidirectional 5 V-tolerant I/O (FT) supplied by VDDUSB; alternate functions: TIM1_ETR, USART1_RTS, SAI2_FS_B, CAN1_TX, OTG_FS_DP, EVENTOUT.
105 PA13 bidirectional 5 V-tolerant I/O (FT); alternate function: JTMS-SWDIO (SWD data I/O, shared with JTAG TMS), EVENTOUT.
106 VCAP_2 power_in Voltage regulator external capacitor connection (VCAP_2), see the VCAP_1/VCAP_2 external capacitor conditions.
107 VSS power_in Ground pin.
108 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
109 PA14 bidirectional 5 V-tolerant I/O (FT); alternate function: JTCK-SWCLK (SWD clock, shared with JTAG TCK), EVENTOUT.
110 PA15 bidirectional 5 V-tolerant I/O (FT); alternate functions: JTDI, TIM2_CH1/TIM2_ETR, HDMI_CEC, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, UART4_RTS, EVENTOUT.
111 PC10 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, QUADSPI_BK1_IO1, SDIO_D2, DCMI_D8, EVENTOUT.
112 PC11 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI3_MISO, USART3_RX, UART4_RX, QUADSPI_BK2_NCS, SDIO_D3, DCMI_D4, EVENTOUT.
113 PC12 bidirectional 5 V-tolerant I/O (FT); alternate functions: I2C2_SDA, SPI3_MOSI/I2S3_SD, USART3_CK, UART5_TX, SDIO_CK, DCMI_D9, EVENTOUT.
114 PD0 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI4_MISO, SPI3_MOSI/I2S3_SD, CAN1_RX, FMC_D2, EVENTOUT.
115 PD1 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI2_NSS/I2S2_WS, CAN1_TX, FMC_D3, EVENTOUT.
116 PD2 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM3_ETR, UART5_RX, SDIO_CMD, DCMI_D11, EVENTOUT.
117 PD3 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACED1, SPI2_SCK/I2S2_CK, USART2_CTS, QUADSPI_CLK, FMC_CLK, DCMI_D5, EVENTOUT.
118 PD4 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART2_RTS, FMC_NOE, EVENTOUT.
119 PD5 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART2_TX, FMC_NWE, EVENTOUT.
120 VSS power_in Ground pin.
121 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
122 PD6 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI3_MOSI/I2S3_SD, SAI1_SD_A, USART2_RX, FMC_NWAIT, DCMI_D10, EVENTOUT.
123 PD7 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART2_CK, SPDIFRX_IN0, FMC_NE1, EVENTOUT.
124 PG9 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPDIFRX_IN3, USART6_RX, QUADSPI_BK2_IO2, SAI2_FS_B, FMC_NE2/FMC_NCE3, DCMI_VSYNC (silicon revision 3 only), EVENTOUT.
125 PG10 bidirectional 5 V-tolerant I/O (FT); alternate functions: SAI2_SD_B, FMC_NE3, DCMI_D2, EVENTOUT.
126 PG11 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI4_SCK, SPDIFRX_IN0, DCMI_D3, EVENTOUT.
127 PG12 bidirectional 5 V-tolerant I/O (FT); alternate functions: SPI4_MISO, SPDIFRX_IN1, USART6_RTS, FMC_NE4, EVENTOUT.
128 PG13 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACED2, SPI4_MOSI, USART6_CTS, FMC_A24, EVENTOUT.
129 PG14 bidirectional 5 V-tolerant I/O (FT); alternate functions: TRACED3, SPI4_NSS, USART6_TX, QUADSPI_BK2_IO3, FMC_A25, EVENTOUT.
130 VSS power_in Ground pin.
131 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.
132 PG15 bidirectional 5 V-tolerant I/O (FT); alternate functions: USART6_CTS, FMC_SDNCAS, DCMI_D13, EVENTOUT.
133 PB3-JTDO/TRACESWO bidirectional 5 V-tolerant I/O (FT); alternate function: JTDO/TRACESWO (JTAG output / trace SWO), TIM2_CH2, I2C2_SDA, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK, EVENTOUT.
134 PB4(NJTRST) bidirectional 5 V-tolerant I/O (FT); alternate functions: NJTRST (JTAG reset, active low), TIM3_CH1, I2C3_SDA, SPI1_MISO, SPI3_MISO, SPI2_NSS/I2S2_WS, EVENTOUT.
135 PB5 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM3_CH2, I2C1_SMBA, SPI1_MOSI/I2S1_SD, SPI3_MOSI/I2S3_SD, CAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10, EVENTOUT.
136 PB6 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM4_CH1, HDMI_CEC, I2C1_SCL, USART1_TX, CAN2_TX, QUADSPI_BK1_NCS, FMC_SDNE1, DCMI_D5, EVENTOUT.
137 PB7 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM4_CH2, I2C1_SDA, USART1_RX, SPDIFRX_IN0, FMC_NL, DCMI_VSYNC, EVENTOUT.
138 BOOT0 input Dedicated BOOT0 input-only pin (B structure) with VPP as its listed function.
139 PB8 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH1/TIM2_ETR, TIM4_CH3, TIM10_CH1, I2C1_SCL, CAN1_RX, SDIO_D4, DCMI_D6, EVENTOUT.
140 PB9 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM2_CH2, TIM4_CH4, TIM11_CH1, I2C1_SDA, SPI2_NSS/I2S2_WS, SAI1_FS_B, CAN1_TX, SDIO_D5, DCMI_D7, EVENTOUT.
141 PE0 bidirectional 5 V-tolerant I/O (FT); alternate functions: TIM4_ETR, SAI2_MCLK_A, FMC_NBL0, DCMI_D2, EVENTOUT.
142 PE1 bidirectional 5 V-tolerant I/O (FT); alternate functions: FMC_NBL1, DCMI_D3, EVENTOUT.
143 PDR_ON power_in Supply-type pin (S) listed in Table 10; its power-down reset function is described in the power supply supervisor section, which is not in this excerpt.
144 VDD power_in Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-144(20x20)
Category Embedded Processors & Controllers
Pins 144

CAD (KiCad official)

  • Symbol: STM32F446ZET7
  • Footprint: Package_QFP:LQFP-144_20x20mm_P0.5mm
  • 3D model: LQFP-144(20x20) (KiCad packages3D, STEP)
  • 3D model files: stm32f446zet7-etched.step / stm32f446zet7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f446zet7.step / stm32f446zet7.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (198 pp, sha256 3902cf9f939a0ef6, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF