User Guide
GD32350G-START
6 /13
4.4.
KEY
Figure 4-4 Schematic diagram of Key function
PA0
R1
10K
Ω
+3V3
GND
C1
50V/0.01uF
KEY
K1
K-1102B
4.5.
USBFS
Figure 4-5 Schematic diagram of USBFS function
GND
R54
47K
Ω
R55
470R
PB3
E10
16V/10uF,AVX
GND
PA11
PA12
1
2
3
Q3
S8550
R10
1M
Ω
C12
50V/4700pF
PWR
USB_VBUS
USB_DM
USB_DP
VBUS
1
DM
2
DP
3
ID
4
GND
5
Shield
6
U
SB
_
Mi
ni
A
B
rec
ep
tac
le
CN1
Mini_USB
+U5V
PA9
R11
22
Ω
R12
22
Ω