Hardware layout and configuration UM1879
22/41 UM1879 Rev 4
10.14 Extension connector P1 and P2
The P1 and P2 headers can connect the STM32L476 Discovery board to a standard
prototyping/wrapping board. STM32L476VGT6 GPIOs are available on these connectors.
P1 and P2 can also be probed by an oscilloscope, logical analyzer or voltmeter.
Table 7. Extension connector
P1 P2
Pin number function Pin number function
13V3 1
5V_U
(5V_USB_ST_LINK)
2 GND 2 GND
32V5 3
5V_I
(5V INPUT)
4GND 4
VUSB
(USB OTG FS VBUS)
53V 5 5V
6BOOT0 6 GND
7 PB3 7 PC14
8 PB2 8 PC15
9 PE8 9 PH0
10 PA0 10 PH1
11 PA5 11 NRST
12 PA1 12 GND
13 PA2 13 PE11
14 PA3 14 PE10
15 PB6 15 PE12
16 PB7 16 PE13
17 PD0 17 PE14
18 NC 18 PE15
19 GND 19 GND
20 GND 20 GND
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