Schematic and Layouts
2017 Microchip Technology Inc.
DS50002673A-page 35
A.3
ADM00805 EVALUATION
BOARD - SCHEMATIC 2
220R2
FB1
USB_N
USB_P
USB_N
USB_P
0.47uF
6.3V
0603
C15
GND
VUSB
MCP2221A
VDD
1
GP0
2
GP1
3
RST
4
UART R
X
5
UART T
X
6
GP2
7
GP3
8
SDA
9
SCL
10
VUSB
11
D-
12
D+
13
VSS
14
VDD
GP0
G
P
1
R
S
T
U
AR
T
RX
U
AR
T
TX
G
P2
G
P3
S
D
A
SCL
V
U
SB
D-
D+
VSS
U2
GREEN
LD1
I2
C
ACTIVITY
8.2k 0603 1%
R25
SM_ACT
GND
GND
0.1uF
16V
0603
C14
4.7uF 10V 0805
C17
GND
GND
8.2k 0603 1%
R26
GREEN
LD2
POWER
USB2.0 Micro-B Female
ID
4
VBUS
1
GND
5
D-
2
D+
3
0
J26
SHIELD
+
5V_USB
+
5V_USB
16V
0.1uF
0603
C20
16V
0.1uF
0603
C19
FXMA2102L8X
VCCA
1
A0
2
A1
3
OE
5
GND
4
B0
7
B1
6
VCCB
8
U3
SCL_USB
SDA_USB
SDA
SCL
SCL_USB
SDA_USB
+
5V_USB
+
5V_USB
+
5V_USB
+
5V_USB
GND
GND
GND
0.1uF 16V 0603
C16
DNP
TP11
GN
D
GND
+
5V_USB
DNP
TP10
5V
SCL
SDA
1
2
3
4
5
6
PK Serial
TX
VDD
GND
SDA
SCL
RX
X
J27
GND
SDA
SCL
4.7k 0603 1%
R27
4.7k 0603 1%
R28
VIO
+
5V_USB
VIO
VIO_EXT
+
5V_USB
VIO_EXT
VIO
JS202011SCQN
6
4
5
1
2
3
SW1
+
5V_USB
USB_I2C_EN
USB_I2C_EN
GND
16V
0.1uF
0603
C18
+
5V_USB
GND
1 1
2
J30
+
5V_USB
GND
USB_I2C_EN
4.7k
0603 1%
R39
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