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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

STM32F446ZET6

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

STM32F446ZET6 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	output	GPIO Port E bit 2, 5V-tolerant I/O with alternate functions TRACECLK, SPI4_SCK, SAI1_MCLK_A, QUADSPI_BK1_IO2, FMC_A23.
2	PE3	output	GPIO Port E bit 3, 5V-tolerant I/O with alternate functions TRACED0, SAI1_SD_B, FMC_A19.
3	PE4	output	GPIO Port E bit 4, 5V-tolerant I/O with alternate functions TRACED1, SPI4_NSS, SAI1_FS_A, FMC_A20, DCMI_D4.
4	PE5	output	GPIO Port E bit 5, 5V-tolerant I/O with alternate functions TRACED2, TIM9_CH1, SPI4_MISO, SAI1_SCK_A, FMC_A21, DCMI_D6.
5	PE6	output	GPIO Port E bit 6, 5V-tolerant I/O with alternate functions TRACED3, TIM9_CH2, SPI4_MOSI, SAI1_SD_A, FMC_A22, DCMI_D7.
6	VBAT	power_in	Battery backup voltage supply pin, 1.7 to 3.6 V.
7	PC13	output	GPIO Port C bit 13, 5V-tolerant I/O, backup domain pin with tamper and wakeup alternate functions.
8	PC14-OSC32_IN	output	GPIO Port C bit 14, 5V-tolerant I/O, 32 kHz oscillator input (OSC32_IN).
9	PC15-OSC32_OUT	output	GPIO Port E bit 15, 5V-tolerant I/O, 32 kHz oscillator output (OSC32_OUT).
10	PF0	output	GPIO Port F bit 0, 5V-tolerant I/O with alternate functions I2C2_SDA, FMC_A0.
11	PF1	output	GPIO Port F bit 1, 5V-tolerant I/O with alternate functions I2C2_SCL, FMC_A1.
12	PF2	output	GPIO Port F bit 2, 5V-tolerant I/O with alternate functions I2C2_SMBA, FMC_A2.
13	PF3	output	GPIO Port F bit 3, 5V-tolerant I/O, ADC3_IN9 input, alternate function FMC_A3.
14	PF4	output	GPIO Port F bit 4, 5V-tolerant I/O, ADC3_IN14 input, alternate function FMC_A4.
15	PF5	output	GPIO Port F bit 5, 5V-tolerant I/O, ADC3_IN15 input, alternate function FMC_A5.
16	VSS	power_in	Ground supply pin.
17	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
18	PF6	output	GPIO Port F bit 6, 5V-tolerant I/O, ADC3_IN4 input, alternate functions TIM10_CH1, SAI1_SD_B, QUADSPI_BK1_IO3.
19	PF7	output	GPIO Port F bit 7, 5V-tolerant I/O, ADC3_IN5 input, alternate functions TIM11_CH1, SAI1_MCLK_B, QUADSPI_BK1_IO2.
20	PF8	output	GPIO Port F bit 8, 5V-tolerant I/O, ADC3_IN6 input, alternate functions SAI1_SCK_B, TIM13_CH1, QUADSPI_BK1_IO0.
21	PF9	output	GPIO Port F bit 9, 5V-tolerant I/O, ADC3_IN7 input, alternate functions SAI1_FS_B, TIM14_CH1, QUADSPI_BK1_IO1.
22	PF10	output	GPIO Port F bit 10, 5V-tolerant I/O, ADC3_IN8 input, alternate function DCMI_D11.
23	PH0-OSC_IN	output	GPIO Port H bit 0, 5V-tolerant I/O, main oscillator input (OSC_IN).
24	PH1-OSC_OUT	output	GPIO Port H bit 1, 5V-tolerant I/O, main oscillator output (OSC_OUT).
25	NRST	bidirectional	Active-low reset input with weak pull-up resistor, bidirectional reset pin with hysteresis.
26	PC0	output	GPIO Port C bit 0, 5V-tolerant I/O, ADC123_IN10 input, alternate functions SAI1_MCLK_B, OTG_HS_ULPI_STP, FMC_SDNWE.
27	PC1	output	GPIO Port C bit 1, 5V-tolerant I/O, ADC123_IN11 input, alternate functions SPI3_MOSI/I2S3_SD, SAI1_SD_A, SPI2_MOSI/I2S2_SD.
28	PC2	output	GPIO Port C bit 2, 5V-tolerant I/O, ADC123_IN12 input, alternate functions SPI2_MISO, OTG_HS_ULPI_DIR, FMC_SDNE0.
29	PC3	output	GPIO Port C bit 3, 5V-tolerant I/O, ADC123_IN13 input, alternate functions SPI2_MOSI/I2S2_SD, OTG_HS_ULPI_NXT, FMC_SDCKE0.
30	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
31	VSSA	power_in	Analog ground supply pin.
32	VREF+	power_in	ADC reference voltage supply pin, 1.7 to 3.6 V.
33	VDDA	power_in	Analog power supply pin, 1.7 to 3.6 V.
34	PA0-WKUP	output	GPIO Port A bit 0, 5V-tolerant I/O, ADC123_IN0 input, wakeup pin alternate functions TIM2_CH1, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX.
35	PA1	output	GPIO Port A bit 1, 5V-tolerant I/O, ADC123_IN1 input, alternate functions TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, QUADSPI_BK1_IO3, SAI2_MCLK_B.
36	PA2	output	GPIO Port A bit 2, 5V-tolerant I/O, ADC123_IN2 input, alternate functions TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, SAI2_SCK_B.
37	PA3	output	GPIO Port A bit 3, 5V-tolerant I/O, ADC123_IN3 input, alternate functions TIM2_CH4, TIM5_CH4, TIM9_CH2, SAI1_FS_A, USART2_RX, OTG_HS_ULPI_D0.
38	VSS	power_in	Ground supply pin.
39	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
40	PA4	output	GPIO Port A bit 4, 3.3V-tolerant I/O, ADC12_IN4 input, DAC_OUT1 output, alternate functions SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC.
41	PA5	output	GPIO Port A bit 5, 3.3V-tolerant I/O, ADC12_IN5 input, DAC_OUT2 output, alternate functions TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK/I2S1_CK, OTG_HS_ULPI_CK.
42	PA6	output	GPIO Port A bit 6, 5V-tolerant I/O, ADC12_IN6 input, alternate functions TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, I2S2_MCK, TIM13_CH1, DCMI_PIXCLK.
43	PA7	output	GPIO Port A bit 7, 5V-tolerant I/O, ADC12_IN7 input, alternate functions TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI/I2S1_SD, TIM14_CH1, FMC_SDNWE.
44	PC4	output	GPIO Port C bit 4, 5V-tolerant I/O, ADC12_IN14 input, alternate functions I2S1_MCK, SPDIFRX_IN2, FMC_SDNE0.
45	PC5	output	GPIO Port C bit 5, 5V-tolerant I/O, ADC12_IN15 input, alternate functions USART3_RX, SPDIFRX_IN3, FMC_SDCKE0.
46	PB0	output	GPIO Port B bit 0, 5V-tolerant I/O, ADC12_IN8 input, alternate functions TIM1_CH2N, TIM3_CH3, TIM8_CH2N, SPI3_MOSI/I2S3_SD, UART4_CTS, OTG_HS_ULPI_D1, SDIO_D1.
47	PB1	output	GPIO Port B bit 1, 5V-tolerant I/O, ADC12_IN9 input, alternate functions TIM1_CH3N, TIM3_CH4, TIM8_CH3N, OTG_HS_ULPI_D2, SDIO_D2.
48	PB2-BOOT1	output	GPIO Port B bit 2, 5V-tolerant I/O, alternate functions TIM2_CH4, SAI1_SD_A, SPI3_MOSI/I2S3_SD, QUADSPI_CLK, OTG_HS_ULPI_D4, SDIO_CK.
49	PF11	output	GPIO Port F bit 11, 5V-tolerant I/O, alternate functions SAI2_SD_B, FMC_SDNRAS, DCMI_D12.
50	PF12	output	GPIO Port F bit 12, 5V-tolerant I/O, alternate function FMC_A6.
51	VSS	power_in	Ground supply pin.
52	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
53	PF13	output	GPIO Port F bit 13, 5V-tolerant I/O, alternate functions FMPI2C1_SMBA, FMC_A7.
54	PF14	output	GPIO Port F bit 14, 5V-tolerant FM+ I/O, alternate functions FMPI2C1_SCL, FMC_A8.
55	PF15	output	GPIO Port F bit 15, 5V-tolerant FM+ I/O, alternate functions FMPI2C1_SDA, FMC_A9.
56	PG0	output	GPIO Port G bit 0, 5V-tolerant I/O, alternate function FMC_A10.
57	PG1	output	GPIO Port G bit 1, 5V-tolerant I/O, alternate function FMC_A11.
58	PE7	output	GPIO Port E bit 7, 5V-tolerant I/O, alternate functions TIM1_ETR, UART5_RX, QUADSPI_BK2_IO0, FMC_D4.
59	PE8	output	GPIO Port E bit 8, 5V-tolerant I/O, alternate functions TIM1_CH1N, UART5_TX, QUADSPI_BK2_IO1, FMC_D5.
60	PE9	output	GPIO Port E bit 9, 5V-tolerant I/O, alternate functions TIM1_CH1, QUADSPI_BK2_IO2, FMC_D6.
61	VSS	power_in	Ground supply pin.
62	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
63	PE10	output	GPIO Port E bit 10, 5V-tolerant I/O, alternate functions TIM1_CH2N, QUADSPI_BK2_IO3, FMC_D7.
64	PE11	output	GPIO Port E bit 11, 5V-tolerant I/O, alternate functions TIM1_CH2, SPI4_NSS, SAI2_SD_B, FMC_D8.
65	PE12	output	GPIO Port E bit 12, 5V-tolerant I/O, alternate functions TIM1_CH3N, SPI4_SCK, SAI2_SCK_B, FMC_D9.
66	PE13	output	GPIO Port E bit 13, 5V-tolerant I/O, alternate functions TIM1_CH3, SPI4_MISO, SAI2_FS_B, FMC_D10.
67	PE14	output	GPIO Port E bit 14, 5V-tolerant I/O, alternate functions TIM1_CH4, SPI4_MOSI, SAI2_MCLK_B, FMC_D11.
68	PE15	output	GPIO Port E bit 15, 5V-tolerant I/O, alternate functions TIM1_BKIN, FMC_D12.
69	PB10	output	GPIO Port B bit 10, 5V-tolerant I/O, alternate functions TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, SAI1_SCK_A, USART3_TX, OTG_HS_ULPI_D3.
70	PB11	output	GPIO Port B bit 11, 5V-tolerant I/O, alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, SAI2_SD_A.
71	VCAP_1	power_in	External capacitor supply pin for internal regulator, connect 100 nF to 1 µF capacitor to VSS.
72	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
73	PB12	output	GPIO Port B bit 12, 5V-tolerant I/O, alternate functions TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, SAI1_SCK_B, USART3_CK, CAN2_RX, OTG_HS_ULPI_D5, OTG_HS_ID.
74	PB13	output	GPIO Port B bit 13, 5V-tolerant I/O, OTG_HS_VBUS input, alternate functions TIM1_CH1N, SPI2_SCK/I2S2_CK, USART3_CTS, CAN2_TX, OTG_HS_ULPI_D6.
75	PB14	output	GPIO Port B bit 14, 5V-tolerant I/O supplied by VDDUSB, alternate functions TIM1_CH2N, TIM8_CH2N, SPI2_MISO, USART3_RTS, TIM12_CH1, OTG_HS_DM.
76	PB15	output	GPIO Port B bit 15, 5V-tolerant I/O supplied by VDDUSB, alternate functions RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI/I2S2_SD, TIM12_CH2, OTG_HS_DP.
77	PD8	output	GPIO Port D bit 8, 5V-tolerant I/O, alternate functions USART3_TX, SPDIFRX_IN1, FMC_D13.
78	PD9	output	GPIO Port D bit 9, 5V-tolerant I/O, alternate functions USART3_RX, FMC_D14.
79	PD10	output	GPIO Port D bit 10, 5V-tolerant I/O, alternate functions USART3_CK, FMC_D15.
80	PD11	output	GPIO Port D bit 11, 5V-tolerant I/O, alternate functions FMPI2C1_SMBA, USART3_CTS, QUADSPI_BK1_IO0, SAI2_SD_A, FMC_A16.
81	PD12	output	GPIO Port D bit 12, 5V-tolerant FM+ I/O, alternate functions TIM4_CH1, FMPI2C1_SCL, USART3_RTS, QUADSPI_BK1_IO1, SAI2_FS_A, FMC_A17.
82	PD13	output	GPIO Port D bit 13, 5V-tolerant FM+ I/O, alternate functions TIM4_CH2, FMPI2C1_SDA, QUADSPI_BK1_IO3, SAI2_SCK_A, FMC_A18.
83	VSS	power_in	Ground supply pin.
84	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
85	PD14	output	GPIO Port D bit 14, 5V-tolerant FM+ I/O, alternate functions TIM4_CH3, FMPI2C1_SCL, SAI2_SCK_A, FMC_D0.
86	PD15	output	GPIO Port D bit 15, 5V-tolerant FM+ I/O, alternate functions TIM4_CH4, FMPI2C1_SDA, FMC_D1.
87	PG2	output	GPIO Port G bit 2, 5V-tolerant I/O, alternate function FMC_A12.
88	PG3	output	GPIO Port G bit 3, 5V-tolerant I/O, alternate function FMC_A13.
89	PG4	output	GPIO Port G bit 4, 5V-tolerant I/O, alternate functions FMC_A14/FMC_BA0.
90	PG5	output	GPIO Port G bit 5, 5V-tolerant I/O, alternate functions FMC_A15/FMC_BA1.
91	PG6	output	GPIO Port G bit 6, 5V-tolerant I/O, alternate functions QUADSPI_BK1_NCS, DCMI_D12.
92	PG7	output	GPIO Port G bit 7, 5V-tolerant I/O, alternate functions USART6_CK, FMC_INT, DCMI_D13.
93	PG8	output	GPIO Port G bit 8, 5V-tolerant I/O, alternate functions SPDIFRX_IN2, USART6_RTS, FMC_SDCLK.
94	VSS	power_in	Ground supply pin.
95	VDDUSB	power_in	USB supply pin for OTG PHYs, 3.3 V ±5%, separate from main VDD to enable independent power management.
96	PC6	output	GPIO Port C bit 6, 5V-tolerant FM+ I/O, alternate functions TIM3_CH1, TIM8_CH1, FMPI2C1_SCL, I2S2_MCK, USART6_TX, SDIO_D6, DCMI_D0.
97	PC7	output	GPIO Port C bit 7, 5V-tolerant FM+ I/O, alternate functions TIM3_CH2, TIM8_CH2, FMPI2C1_SDA, SPI2_SCK/I2S2_CK, I2S3_MCK, SPDIFRX_IN1, USART6_RX, SDIO_D7, DCMI_D1.
98	PC8	output	GPIO Port C bit 8, 5V-tolerant I/O, alternate functions TRACED0, TIM3_CH3, TIM8_CH3, UART5_RTS, USART6_CK, SDIO_D0, DCMI_D2.
99	PC9	output	GPIO Port C bit 9, 5V-tolerant I/O, alternate functions MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, UART5_CTS, QUADSPI_BK1_IO0, SDIO_D1, DCMI_D3.
100	PA8	output	GPIO Port A bit 8, 5V-tolerant I/O, alternate functions MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF.
101	PA9	output	GPIO Port A bit 9, 5V-tolerant I/O, OTG_FS_VBUS input, alternate functions TIM1_CH2, I2C3_SMBA, SPI2_SCK/I2S2_CK, SAI1_SD_B, USART1_TX, DCMI_D0.
102	PA10	output	GPIO Port A bit 10, 5V-tolerant I/O, alternate functions TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1.
103	PA11	output	GPIO Port A bit 11, 5V-tolerant I/O supplied by VDDUSB, alternate functions TIM1_CH4, USART1_CTS, CAN1_RX, OTG_FS_DM.
104	PA12	output	GPIO Port A bit 12, 5V-tolerant I/O supplied by VDDUSB, alternate functions TIM1_ETR, USART1_RTS, SAI2_FS_B, CAN1_TX, OTG_FS_DP.
105	PA13	output	GPIO Port A bit 13, 5V-tolerant I/O, JTAG/SWD interface pin (JTMS-SWDIO).
106	VCAP_2	power_in	External capacitor supply pin for internal regulator, connect 100 nF to 1 µF capacitor to VSS.
107	VSS	power_in	Ground supply pin.
108	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
109	PA14	output	GPIO Port A bit 14, 5V-tolerant I/O, JTAG/SWD interface pin (JTCK-SWCLK).
110	PA15	output	GPIO Port A bit 15, 5V-tolerant I/O, JTAG interface pin (JTDI), alternate functions TIM2_CH1/TIM2_ETR, HDMI_CEC, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, UART4_RTS.
111	PC10	output	GPIO Port C bit 10, 5V-tolerant I/O, alternate functions SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, QUADSPI_BK1_IO1, SDIO_D2, DCMI_D8.
112	PC11	output	GPIO Port C bit 11, 5V-tolerant I/O, alternate functions SPI3_MISO, USART3_RX, UART4_RX, QUADSPI_BK2_NCS, SDIO_D3, DCMI_D4.
113	PC12	output	GPIO Port C bit 12, 5V-tolerant I/O, alternate functions I2C2_SDA, SPI3_MOSI/I2S3_SD, USART3_CK, UART5_TX, SDIO_CK, DCMI_D9.
114	PD0	output	GPIO Port D bit 0, 5V-tolerant I/O, alternate functions SPI4_MISO, SPI3_MOSI/I2S3_SD, CAN1_RX, FMC_D2.
115	PD1	output	GPIO Port D bit 1, 5V-tolerant I/O, alternate functions SPI2_NSS/I2S2_WS, CAN1_TX, FMC_D3.
116	PD2	output	GPIO Port D bit 2, 5V-tolerant I/O, alternate functions TIM3_ETR, UART5_RX, SDIO_CMD, DCMI_D11.
117	PD3	output	GPIO Port D bit 3, 5V-tolerant I/O, alternate functions TRACED1, SPI2_SCK/I2S2_CK, USART2_CTS, QUADSPI_CLK, FMC_CLK, DCMI_D5.
118	PD4	output	GPIO Port D bit 4, 5V-tolerant I/O, alternate functions USART2_RTS, FMC_NOE.
119	PD5	output	GPIO Port D bit 5, 5V-tolerant I/O, alternate functions USART2_TX, FMC_NWE.
120	VSS	power_in	Ground supply pin.
121	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
122	PD6	output	GPIO Port D bit 6, 5V-tolerant I/O, alternate functions SPI3_MOSI/I2S3_SD, SAI1_SD_A, USART2_RX, FMC_NWAIT, DCMI_D10.
123	PD7	output	GPIO Port D bit 7, 5V-tolerant I/O, alternate functions USART2_CK, SPDIFRX_IN0, FMC_NE1.
124	PG9	output	GPIO Port G bit 9, 5V-tolerant I/O, alternate functions SPDIFRX_IN3, USART6_RX, QUADSPI_BK2_IO2, SAI2_FS_B, FMC_NE2/FMC_NCE3, DCMI_VSYNC.
125	PG10	output	GPIO Port G bit 10, 5V-tolerant I/O, alternate functions SAI2_SD_B, FMC_NE3, DCMI_D2.
126	PG11	output	GPIO Port G bit 11, 5V-tolerant I/O, alternate functions SPI4_SCK, SPDIFRX_IN0, DCMI_D3.
127	PG12	output	GPIO Port G bit 12, 5V-tolerant I/O, alternate functions SPI4_MISO, SPDIFRX_IN1, USART6_RTS, FMC_NE4.
128	PG13	output	GPIO Port G bit 13, 5V-tolerant I/O, alternate functions TRACED2, SPI4_MOSI, USART6_CTS, FMC_A24.
129	PG14	output	GPIO Port G bit 14, 5V-tolerant I/O, alternate functions TRACED3, SPI4_NSS, USART6_TX, QUADSPI_BK2_IO3, FMC_A25.
130	VSS	power_in	Ground supply pin.
131	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.
132	PG15	output	GPIO Port G bit 15, 5V-tolerant I/O, alternate functions USART6_CTS, FMC_SDNCAS, DCMI_D13.
133	PB3	output	GPIO Port B bit 3, 5V-tolerant I/O, JTAG interface pin (JTDO/TRACESWO), alternate functions TIM2_CH2, I2C2_SDA, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK.
134	PB4	output	GPIO Port B bit 4, 5V-tolerant I/O, JTAG interface pin (NJTRST), alternate functions TIM3_CH1, I2C3_SDA, SPI1_MISO, SPI3_MISO, SPI2_NSS/I2S2_WS.
135	PB5	output	GPIO Port B bit 5, 5V-tolerant I/O, alternate functions TIM3_CH2, I2C1_SMBA, SPI1_MOSI/I2S1_SD, SPI3_MOSI/I2S3_SD, CAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10.
136	PB6	output	GPIO Port B bit 6, 5V-tolerant I/O, alternate functions TIM4_CH1, HDMI_CEC, I2C1_SCL, USART1_TX, CAN2_TX, QUADSPI_BK1_NCS, FMC_SDNE1, DCMI_D5.
137	PB7	output	GPIO Port B bit 7, 5V-tolerant I/O, alternate functions TIM4_CH2, I2C1_SDA, USART1_RX, SPDIFRX_IN0, FMC_NL, DCMI_VSYNC.
138	BOOT0	input	Boot select input pin, pull-down for boot from internal Flash, pull-up for boot from system memory, alternate function VPP for flash programming.
139	PB8	output	GPIO Port B bit 8, 5V-tolerant I/O, alternate functions TIM2_CH1/TIM2_ETR, TIM4_CH3, TIM10_CH1, I2C1_SCL, CAN1_RX, SDIO_D4, DCMI_D6.
140	PB9	output	GPIO Port B bit 9, 5V-tolerant I/O, alternate functions TIM2_CH2, TIM4_CH4, TIM11_CH1, I2C1_SDA, SPI2_NSS/I2S2_WS, SAI1_FS_B, CAN1_TX, SDIO_D5, DCMI_D7.
141	PE0	output	GPIO Port E bit 0, 5V-tolerant I/O, alternate functions TIM4_ETR, SAI2_MCLK_A, FMC_NBL0, DCMI_D2.
142	PE1	output	GPIO Port E bit 1, 5V-tolerant I/O, alternate functions FMC_NBL1, DCMI_D3.
143	PDR_ON	power_in	Power-down reset control pin, supply voltage for power-down reset function.
144	VDD	power_in	Main power supply pin, 1.7 to 3.6 V.

Key specifications

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

CAD (KiCad official)

Symbol: STM32F446ZET6
Footprint: Package_QFP:LQFP-144_20x20mm_P0.5mm
3D model: LQFP-144(20x20) (KiCad packages3D, STEP)
3D model files: stm32f446zet6-etched.step / stm32f446zet6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f446zet6.step / stm32f446zet6.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 2026-10-05, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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