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U31
test2
3
Test
2
C2
Capacitance
100nF
C4
Capacitance
100nF
C14
Capacitance
27pF
C12
Capacitance
100nF
C13
Capacitance
27pF
C1
Capacitance
100nF
C10
Capacitance
100nF
C26
Capacitance
100nF
C9
Capacitance
100nF
C5
Capacitance
100nF
C6
Capacitance
100nF
C25
Capacitance
100nF
C11
Capacitance
1uF
C8
Capacitance
1uF
C3
Capacitance
100nF
C7
Capacitance
100nF
EXTERNAL FLASH CIRCUIT
D2
Color
Green
User LED for blinking and testing the board
R19
Resistance
1k5 Ω
Cl = 2(Ccap_load - Cstray)
R4
Resistance
1kΩ
R18
Resistance
1kΩ
C8 Should be close to pin 44 of RP2040
MICROCONTROLLER
C11 Should be close to pin 45 of RP2040
R3
Resistance
10kΩ
GPIO0
GPIO21
GPIO5
GPIO4
GPIO16
SWD
GPIO3
GPIO14
GPIO29/ADC3
+3V3
GND
GPIO20
GPIO17
GPIO18
USB_DM
GPIO22
GPIO11
GPIO19
GPIO9
USB_DP
SWCLK
GPIO27/ADC1
GPIO23
GPIO28/ADC2
GPIO2
GPIO8
GPIO1
GPIO12
GPIO6
GPIO10
GPIO24
GPIO25/ADC0
RUN
GPIO15
GPIO13
GPIO7
SW1
R2
Resistance
47kΩ
R1
Resistance
47kΩ
U1
Y1
U2
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