VDD
S1
C10
Capacitance
0.1uF
VDD
L1
Inductance
20uH
C5
Capacitance
10nF
VDD
VDD
C4
Capacitance
0.1uF
C8
Capacitance
10pF
C9
Capacitance
10nF
VDD
C7
Capacitance
10pF
C6
Capacitance
1uF
R4
Resistance
470 Ω
SPI1_MOSI
U2
LED_ON
VDDA
SPI1_MISO
I2C_SDA
VDD
SPI1_SCK
SPI1_CS
I2C1_SCL
LED
Q1
X1
U3