ST STM32F401 User Manual page 28

Hardware layout
Table 6. MCU pin description versus board function (page 7 of 8)
MCU pin
Main Alternate
function functions
PE8 TIM1_CH1N
PE9 TIM1_CH1
PE10 TIM1_CH2N
PE11 TIM1_CH2, SPI4_NSS
TIM1_CH3N,
PE12
SPI4_SCK
PE13 TIM1_CH3, SPI4_MISO 44
PE14 TIM1_CH4, SPI4_MOSI 45
PE15 TIM1_BKIN
PH0 OSC_IN
PH1 OSC_OUT
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39
40
41
42
43
46
12
13
DocID025174 Rev 1
Board function
UM1669
26
27
28
29
30
31
32
33
7
8
3
4
5
6
3 22
4
5 3 1 1
2 2
5
23