Schematic

3.3V
1
SDA
3
SCL
5
GP4
7
GND
9
GP17
11
GP27
13
GP22
15
3.3V
17
MOSI
19
MISO
21
SCLK
23
GND
25
CE1
26
CE0
24
GP25
22
GND
20
GP24
18
GP23
16
GND
14
GP18#
12
RXI
10
TXO
8
GND
6
5V
4
5V
2
GND
30
GND
34
GND
39
ID_SD
27
ID_SC
28
GP5
29
GP6
31
GP12
32
GP13
33
GP19
35
GP16
36
GP26
37
GP20
38
GP21
40
A0
1
A1
2
A2
3
A3
4
A4
5
CH0
6
CH1
7
CH2
8
CH3
9
CH4
10
CH5
11
CH6
12
CH7
13
VSS
14
CH8
15
CH9
16
CH10
17
CH11
18
CH12
19
CH13
20
CH14
21
CH15
22
OE
23
A5
24
EXTCLK
25
SCL
26
SDA
27
VDD
28
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
4
1
2
3
4
GND
GND*2
VBUS
VBUS1*2
CC1
A5
D+
A6*2
D-
A7*2
CC2
B5
SHLD
SHLD1*8
CTS
9
DCD
12
DSR
10
DTR
13
RI
11
RTS
14
GND
1
R232
15
RXI
3
TXO
2
UD+
5
UD-
6
V3
4
VCC
16
B
2
A
1
Y
4
53
USB-C
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