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Contents

README

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STM32F437IGT6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-176(24x24)

STM32F437IGT6 from STMicroelectronics, in a LQFP-176(24x24). 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 Port E pin 2, alternate functions: TRACECLK, SPI4_SCK, SAI1_MCLK_A, ETH_MII_TXD3, FMC_A23, EVENTOUT.
2 PE3 bidirectional Port E pin 3, alternate functions: TRACED0, SAI1_SD_B, FMC_A19, EVENTOUT.
3 PE4 bidirectional Port E pin 4, alternate functions: TRACED1, SPI4_NSS, SAI1_FS_A, FMC_A20, DCMI_D4, LCD_B0, EVENTOUT.
4 PE5 bidirectional Port E pin 5, alternate functions: TRACED2, TIM9_CH1, SPI4_MISO, SAI1_SCK_A, FMC_A21, DCMI_D6, LCD_G0, EVENTOUT.
5 PE6 bidirectional Port E pin 6, alternate functions: TRACED3, TIM9_CH2, SPI4_MOSI, SAI1_SD_A, FMC_A22, DCMI_D7, LCD_G1, EVENTOUT.
6 VBAT power_in Battery supply for RTC and backup domain (1.7 V to 3.6 V).
7 PI8 bidirectional Port I pin 8, 5V tolerant, additional function: TAMP_2.
8 PC13 bidirectional Port C pin 13, 5V tolerant, additional function: TAMP_1, limited to 2 MHz and 30 pF load.
9 PC14/OSC32_IN bidirectional Port C pin 14, oscillator input for 32 kHz RTC crystal, 5V tolerant, not FT in oscillator mode.
10 PC15/OSC32_OUT bidirectional Port C pin 15, oscillator output for 32 kHz RTC crystal, 5V tolerant, not FT in oscillator mode.
11 PI9 bidirectional Port I pin 9, alternate functions: CAN1_RX, FMC_D30, LCD_VSYNC, EVENTOUT.
12 PI10 bidirectional Port I pin 10, alternate functions: ETH_MII_RX_ER, FMC_D31, LCD_HSYNC, EVENTOUT.
13 PI11 bidirectional Port I pin 11, alternate functions: OTG_HS_ULPI_DIR, EVENTOUT.
14 VSS power_in Ground reference (0 V).
15 VDD power_in Main power supply (1.7 V to 3.6 V).
16 PF0 bidirectional Port F pin 0, alternate functions: I2C2_SDA, FMC_A0, EVENTOUT.
17 PF1 bidirectional Port F pin 1, alternate functions: I2C2_SCL, FMC_A1, EVENTOUT.
18 PF2 bidirectional Port F pin 2, alternate functions: I2C2_SMBA, FMC_A2, EVENTOUT.
19 PF3 bidirectional Port F pin 3, ADC3_IN9, alternate functions: FMC_A3, EVENTOUT.
20 PF4 bidirectional Port F pin 4, ADC3_IN14, alternate functions: FMC_A4, EVENTOUT.
21 PF5 bidirectional Port F pin 5, ADC3_IN15, alternate functions: FMC_A5, EVENTOUT.
22 VSS power_in Ground reference (0 V).
23 VDD power_in Main power supply (1.7 V to 3.6 V).
24 PF6 bidirectional Port F pin 6, ADC3_IN4, alternate functions: TIM10_CH1, SPI5_NSS, SAI1_SD_B, UART7_Rx, FMC_NIORD, EVENTOUT.
25 PF7 bidirectional Port F pin 7, ADC3_IN5, alternate functions: TIM11_CH1, SPI5_SCK, SAI1_MCLK_B, UART7_Tx, FMC_NREG, EVENTOUT.
26 PF8 bidirectional Port F pin 8, ADC3_IN6, alternate functions: SPI5_MISO, SAI1_SCK_B, TIM13_CH1, FMC_NIOWR, EVENTOUT.
27 PF9 bidirectional Port F pin 9, ADC3_IN7, alternate functions: SPI5_MOSI, SAI1_FS_B, TIM14_CH1, FMC_CD, EVENTOUT.
28 PF10 bidirectional Port F pin 10, ADC3_IN8, alternate functions: FMC_INTR, DCMI_D11, LCD_DE, EVENTOUT.
29 PH0/OSC_IN bidirectional Port H pin 0, main oscillator input (4 to 26 MHz), not FT in oscillator mode.
30 PH1/OSC_OUT bidirectional Port H pin 1, main oscillator output, not FT in oscillator mode.
31 NRST input Active-low asynchronous reset pin with internal weak pull-up, 5V tolerant.
32 PC0 bidirectional Port C pin 0, ADC123_IN10, alternate functions: OTG_HS_ULPI_STP, FMC_SDNWE, EVENTOUT.
33 PC1 bidirectional Port C pin 1, ADC123_IN11, alternate functions: ETH_MDC, EVENTOUT.
34 PC2 bidirectional Port C pin 2, ADC123_IN12, alternate functions: SPI2_MISO, I2S2ext_SD, OTG_HS_ULPI_DIR, ETH_MII_TXD2, FMC_SDNE0, EVENTOUT.
35 PC3 bidirectional Port C pin 3, ADC123_IN13, alternate functions: SPI2_MOSI/I2S2_SD, OTG_HS_ULPI_NXT, ETH_MII_TX_CLK, FMC_SDCKE0, EVENTOUT.
36 VDD power_in Main power supply (1.7 V to 3.6 V).
37 VSSA power_in Analog ground reference.
38 VREF+ power_in ADC reference voltage positive (1.7 V to 3.6 V).
39 VDDA power_in Analog power supply for ADCs and comparators (1.7 V to 3.6 V).
40 PA0/WKUP bidirectional Port A pin 0, wake-up pin, ADC123_IN0/WKUP, alternate functions: TIM2_CH1/TIM2_ETR, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX, ETH_MII_CRS, EVENTOUT.
41 PA1 bidirectional Port A pin 1, ADC123_IN1, alternate functions: TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, ETH_MII_RX_CLK/ETH_RMII_REF_CLK, EVENTOUT.
42 PA2 bidirectional Port A pin 2, ADC123_IN2, alternate functions: TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, ETH_MDIO, EVENTOUT.
43 PH2 bidirectional Port H pin 2, alternate functions: ETH_MII_CRS, FMC_SDCKE0, LCD_R0, EVENTOUT.
44 PH3 bidirectional Port H pin 3, alternate functions: ETH_MII_COL, FMC_SDNE0, LCD_R1, EVENTOUT.
45 PH4 bidirectional
46 PH5 bidirectional
47 PA3 bidirectional Port A pin 3, ADC123_IN3, alternate functions: TIM2_CH4, TIM5_CH4, TIM9_CH2, USART2_RX, OTG_HS_ULPI_D0, ETH_MII_COL, LCD_B5, EVENTOUT.
48 BYPASS_REG input Regulator bypass pin, connect to VDD for regulator OFF mode.
49 VDD power_in Main power supply (1.7 V to 3.6 V).
50 PA4 bidirectional Port A pin 4, ADC12_IN4/DAC_OUT1, 3.3V tolerant directly connected to ADC, alternate functions: SPI1_NSS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC, LCD_VSYNC, EVENTOUT.
51 PA5 bidirectional Port A pin 5, ADC12_IN5/DAC_OUT2, 3.3V tolerant directly connected to ADC, alternate functions: TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK, OTG_HS_ULPI_CK, EVENTOUT.
52 PA6 bidirectional Port A pin 6, ADC12_IN6, alternate functions: TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, TIM13_CH1, DCMI_PIXCLK, LCD_G2, EVENTOUT.
53 PA7 bidirectional Port A pin 7, ADC12_IN7, alternate functions: TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI, TIM14_CH1, ETH_MII_RX_DV/ETH_RMII_CRS_DV, EVENTOUT.
54 PC4 bidirectional Port C pin 4, ADC12_IN14, alternate functions: ETH_MII_RXD0/ETH_RMII_RXD0, EVENTOUT.
55 PC5 bidirectional Port C pin 5, ADC12_IN15, alternate functions: ETH_MII_RXD1/ETH_RMII_RXD1, EVENTOUT.
56 PB0 bidirectional Port B pin 0, ADC12_IN8, alternate functions: TIM1_CH2N, TIM3_CH3, TIM8_CH2N, LCD_R3, OTG_HS_ULPI_D1, ETH_MII_RXD2, EVENTOUT.
57 PB1 bidirectional Port B pin 1, ADC12_IN9, alternate functions: TIM1_CH3N, TIM3_CH4, TIM8_CH3N, LCD_R6, OTG_HS_ULPI_D2, ETH_MII_RXD3, EVENTOUT.
58 PB2/BOOT1 bidirectional Port B pin 2, BOOT1 pin, alternate function: EVENTOUT.
59 PF11 bidirectional Port F pin 11, alternate functions: SPI5_MOSI, FMC_SDNRAS, DCMI_D12, EVENTOUT.
60 PF12 bidirectional Port F pin 12, alternate functions: FMC_A6, EVENTOUT.
61 VSS power_in Ground reference (0 V).
62 VDD power_in Main power supply (1.7 V to 3.6 V).
63 PF13 bidirectional Port F pin 13, alternate functions: FMC_A7, EVENTOUT.
64 PF14 bidirectional Port F pin 14, alternate functions: FMC_A8, EVENTOUT.
65 PF15 bidirectional Port F pin 15, alternate functions: FMC_A9, EVENTOUT.
66 PG0 bidirectional Port G pin 0, alternate functions: FMC_A10, EVENTOUT.
67 PG1 bidirectional Port G pin 1, alternate functions: FMC_A11, EVENTOUT.
68 PE7 bidirectional Port E pin 7, alternate functions: TIM1_ETR, UART7_Rx, FMC_D4, EVENTOUT.
69 PE8 bidirectional Port E pin 8, alternate functions: TIM1_CH1N, UART7_Tx, FMC_D5, EVENTOUT.
70 PE9 bidirectional Port E pin 9, alternate functions: TIM1_CH1, FMC_D6, EVENTOUT.
71 VSS power_in Ground reference (0 V).
72 VDD power_in Main power supply (1.7 V to 3.6 V).
73 PE10 bidirectional Port E pin 10, alternate functions: TIM1_CH2N, FMC_D7, EVENTOUT.
74 PE11 bidirectional Port E pin 11, alternate functions: TIM1_CH2, SPI4_NSS, FMC_D8, LCD_G3, EVENTOUT.
75 PE12 bidirectional Port E pin 12, alternate functions: TIM1_CH3N, SPI4_SCK, FMC_D9, LCD_B4, EVENTOUT.
76 PE13 bidirectional Port E pin 13, alternate functions: TIM1_CH3, SPI4_MISO, FMC_D10, LCD_DE, EVENTOUT.
77 PE14 bidirectional Port E pin 14, alternate functions: TIM1_CH4, SPI4_MOSI, FMC_D11, LCD_CLK, EVENTOUT.
78 PE15 bidirectional Port E pin 15, alternate functions: TIM1_BKIN, FMC_D12, LCD_R7, EVENTOUT.
79 PB10 bidirectional Port B pin 10, alternate functions: TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, USART3_TX, OTG_HS_ULPI_D3, ETH_MII_RX_ER, LCD_G4, EVENTOUT.
80 PB11 bidirectional Port B pin 11, alternate functions: TIM2_CH4, I2C2_SDA, USART3_RX, OTG_HS_ULPI_D4, ETH_MII_TX_EN/ETH_RMII_TX_EN, LCD_G5, EVENTOUT.
81 VCAP_1 power_in Decoupling capacitor pin for voltage regulator, 10 µF to 100 µF ceramic capacitor required.
82 VDD power_in Main power supply (1.7 V to 3.6 V).
83 PH6 bidirectional Port H pin 6, alternate functions: I2C2_SMBA, SPI5_SCK, TIM12_CH1, ETH_MII_RXD2, FMC_SDNE1, DCMI_D8, EVENTOUT.
84 PH7 bidirectional Port H pin 7, alternate functions: I2C3_SCL, SPI5_MISO, ETH_MII_RXD3, FMC_SDCKE1, DCMI_D9, EVENTOUT.
85 PH8 bidirectional Port H pin 8, alternate functions: I2C3_SDA, FMC_D16, DCMI_HSYNC, LCD_R2, EVENTOUT.
86 PH9 bidirectional Port H pin 9, alternate functions: I2C3_SMBA, TIM12_CH2, FMC_D17, DCMI_D0, LCD_R3, EVENTOUT.
87 PH10 bidirectional Port H pin 10, alternate functions: TIM5_CH1, FMC_D18, DCMI_D1, LCD_R4, EVENTOUT.
88 PH11 bidirectional Port H pin 11, alternate functions: TIM5_CH2, FMC_D19, DCMI_D2, LCD_R5, EVENTOUT.
89 PH12 bidirectional Port H pin 12, alternate functions: TIM5_CH3, FMC_D20, DCMI_D3, LCD_R6, EVENTOUT.
90 VSS power_in Ground reference (0 V).
91 VDD power_in Main power supply (1.7 V to 3.6 V).
92 PB12 bidirectional Port B pin 12, alternate functions: TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, USART3_CK, CAN2_RX, OTG_HS_ULPI_D5, ETH_MII_TXD0/ETH_RMII_TXD0, OTG_HS_ID, EVENTOUT.
93 PB13 bidirectional Port B pin 13, alternate functions: TIM1_CH1N, SPI2_SCK/I2S2_CK, USART3_CTS, CAN2_TX, OTG_HS_ULPI_D6, ETH_MII_TXD1/ETH_RMII_TXD1, EVENTOUT, additional function: OTG_HS_VBUS.
94 PB14 bidirectional Port B pin 14, alternate functions: TIM1_CH2N, TIM8_CH2N, SPI2_MISO, I2S2ext_SD, USART3_RTS, TIM12_CH1, OTG_HS_DM, EVENTOUT.
95 PB15 bidirectional Port B pin 15, alternate functions: RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI/I2S2_SD, TIM12_CH2, OTG_HS_DP, EVENTOUT.
96 PD8 bidirectional Port D pin 8, alternate functions: USART3_TX, FMC_D13, EVENTOUT.
97 PD9 bidirectional Port D pin 9, alternate functions: USART3_RX, FMC_D14, EVENTOUT.
98 PD10 bidirectional Port D pin 10, alternate functions: USART3_CK, FMC_D15, LCD_B3, EVENTOUT.
99 PD11 bidirectional Port D pin 11, alternate functions: USART3_CTS, FMC_A16, EVENTOUT.
100 PD12 bidirectional Port D pin 12, alternate functions: TIM4_CH1, USART3_RTS, FMC_A17, EVENTOUT.
101 PD13 bidirectional Port D pin 13, alternate functions: TIM4_CH2, FMC_A18, EVENTOUT.
102 VSS power_in Ground reference (0 V).
103 VDD power_in Main power supply (1.7 V to 3.6 V).
104 PD14 bidirectional Port D pin 14, alternate functions: TIM4_CH3, FMC_D0, EVENTOUT.
105 PD15 bidirectional Port D pin 15, alternate functions: TIM4_CH4, FMC_D1, EVENTOUT.
106 PG2 bidirectional Port G pin 2, alternate functions: FMC_A12, EVENTOUT.
107 PG3 bidirectional Port G pin 3, alternate functions: FMC_A13, EVENTOUT.
108 PG4 bidirectional Port G pin 4, alternate functions: FMC_A14/FMC_BA0, EVENTOUT.
109 PG5 bidirectional Port G pin 5, alternate functions: FMC_A15/FMC_BA1, EVENTOUT.
110 PG6 bidirectional Port G pin 6, alternate functions: FMC_INT2, DCMI_D12, LCD_R7, EVENTOUT.
111 PG7 bidirectional Port G pin 7, alternate functions: USART6_CK, FMC_INT3, DCMI_D13, LCD_CLK, EVENTOUT.
112 PG8 bidirectional Port G pin 8, alternate functions: SPI6_NSS, USART6_RTS, ETH_PPS_OUT, FMC_SDCLK, EVENTOUT.
113 VSS power_in Ground reference (0 V).
114 VDD power_in Main power supply (1.7 V to 3.6 V).
115 PC6 bidirectional Port C pin 6, alternate functions: TIM3_CH1, TIM8_CH1, I2S2_MCK, USART6_TX, SDIO_D6, DCMI_D0, LCD_HSYNC, EVENTOUT.
116 PC7 bidirectional Port C pin 7, alternate functions: TIM3_CH2, TIM8_CH2, I2S3_MCK, USART6_RX, SDIO_D7, DCMI_D1, LCD_G6, EVENTOUT.
117 PC8 bidirectional Port C pin 8, alternate functions: TIM3_CH3, TIM8_CH3, USART6_CK, SDIO_D0, DCMI_D2, EVENTOUT.
118 PC9 bidirectional Port C pin 9, alternate functions: MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, SDIO_D1, DCMI_D3, EVENTOUT.
119 PA8 bidirectional Port A pin 8, alternate functions: MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF, LCD_R6, EVENTOUT.
120 PA9 bidirectional Port A pin 9, alternate functions: TIM1_CH2, I2C3_SMBA, USART1_TX, DCMI_D0, EVENTOUT, additional function: OTG_FS_VBUS.
121 PA10 bidirectional Port A pin 10, alternate functions: TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1, EVENTOUT.
122 PA11 bidirectional Port A pin 11, alternate functions: TIM1_CH4, USART1_CTS, CAN1_RX, LCD_R4, OTG_FS_DM, EVENTOUT.
123 PA12 bidirectional Port A pin 12, alternate functions: TIM1_ETR, USART1_RTS, CAN1_TX, LCD_R5, OTG_FS_DP, EVENTOUT.
124 PA13 bidirectional
125 VCAP_2 power_in Decoupling capacitor pin for voltage regulator, 10 µF to 100 µF ceramic capacitor required.
126 VSS power_in Ground reference (0 V).
127 VDD power_in Main power supply (1.7 V to 3.6 V).
128 PH13 bidirectional Port H pin 13, alternate functions: TIM8_CH1N, CAN1_TX, FMC_D21, LCD_G2, EVENTOUT.
129 PH14 bidirectional Port H pin 14, alternate functions: TIM8_CH2N, FMC_D22, DCMI_D4, LCD_G3, EVENTOUT.
130 PH15 bidirectional Port H pin 15, alternate functions: TIM8_CH3N, FMC_D23, DCMI_D11, LCD_G4, EVENTOUT.
131 PI0 bidirectional Port I pin 0, alternate functions: TIM5_CH4, SPI2_NSS/I2S2_WS, FMC_D24, DCMI_D13, LCD_G5, EVENTOUT.
132 PI1 bidirectional Port I pin 1, alternate functions: SPI2_SCK/I2S2_CK, FMC_D25, DCMI_D8, LCD_G6, EVENTOUT.
133 PI2 bidirectional Port I pin 2, alternate functions: TIM8_CH4, SPI2_MISO, I2S2ext_SD, FMC_D26, DCMI_D9, LCD_G7, EVENTOUT.
134 PI3 bidirectional Port I pin 3, alternate functions: TIM8_ETR, SPI2_MOSI/I2S2_SD, FMC_D27, DCMI_D10, EVENTOUT.
135 VSS power_in Ground reference (0 V).
136 VDD power_in Main power supply (1.7 V to 3.6 V).
137 PA14 bidirectional
138 PA15 bidirectional
139 PC10 bidirectional Port C pin 10, alternate functions: SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, SDIO_D2, DCMI_D8, LCD_R2, EVENTOUT.
140 PC11 bidirectional Port C pin 11, alternate functions: I2S3ext_SD, SPI3_MISO, USART3_RX, UART4_RX, SDIO_D3, DCMI_D4, EVENTOUT.
141 PC12 bidirectional Port C pin 12, alternate functions: SPI3_MOSI/I2S3_SD, USART3_CK, UART5_TX, SDIO_CK, DCMI_D9, EVENTOUT.
142 PD0 bidirectional Port D pin 0, alternate functions: CAN1_RX, FMC_D2, EVENTOUT.
143 PD1 bidirectional Port D pin 1, alternate functions: CAN1_TX, FMC_D3, EVENTOUT.
144 PD2 bidirectional Port D pin 2, alternate functions: TIM3_ETR, UART5_RX, SDIO_CMD, DCMI_D11, EVENTOUT.
145 PD3 bidirectional Port D pin 3, alternate functions: SPI2_SCK/I2S2_CK, USART2_CTS, FMC_CLK, DCMI_D5, LCD_G7, EVENTOUT.
146 PD4 bidirectional Port D pin 4, alternate functions: USART2_RTS, FMC_NOE, EVENTOUT.
147 PD5 bidirectional Port D pin 5, alternate functions: USART2_TX, FMC_NWE, EVENTOUT.
148 VSS power_in Ground reference (0 V).
149 VDD power_in Main power supply (1.7 V to 3.6 V).
150 PD6 bidirectional Port D pin 6, alternate functions: SPI3_MOSI/I2S3_SD, SAI1_SD_A, USART2_RX, FMC_NWAIT, DCMI_D10, LCD_B2, EVENTOUT.
151 PD7 bidirectional Port D pin 7, alternate functions: USART2_CK, FMC_NE1/FMC_NCE2, EVENTOUT.
152 PG9 bidirectional
153 PG10 bidirectional
154 PG11 bidirectional
155 PG12 bidirectional
156 PG13 bidirectional
157 PG14 bidirectional
158 VSS power_in Ground reference (0 V).
159 VDD power_in Main power supply (1.7 V to 3.6 V).
160 PG15 bidirectional
161 PB3 bidirectional
162 PB4 bidirectional
163 PB5 bidirectional
164 PB6 bidirectional
165 PB7 bidirectional
166 BOOT0 input
167 PB8 bidirectional
168 PB9 bidirectional
169 PE0 bidirectional
170 PE1 bidirectional
171 PDR_ON input
172 VDD power_in Main power supply (1.7 V to 3.6 V).
173 PI4 bidirectional
174 PI5 bidirectional
175 PI6 bidirectional
176 PI7 bidirectional

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-176(24x24)
Category Embedded Processors & Controllers
Pins 176

CAD (KiCad official)

  • Symbol: STM32F437IGT6
  • Footprint: Package_QFP:LQFP-176_24x24mm_P0.5mm
  • 3D model: LQFP-176(24x24) (KiCad packages3D, STEP)
  • 3D model files: stm32f437igt6-etched.step / stm32f437igt6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f437igt6.step / stm32f437igt6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (241 pp, sha256 2505988d88e7f454, retrieved 2026-09-29, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF