Schematic

C2 & C3 to be
near U1G4.27
C4 to be
near U1G4.25
3.6V < VIN < 6.0V
I2C PULLUP
BYPASS
JUMPER
In
Out
GND
VIN
3.3V/150mA
GND
VCC
10K
GND
0.27
2.2uF
1.0uF 0.1uF 0.1uF
VCC
GND
2.2uF0.1uF
GND
VIN
4.7K 4.7K
GND
GND
RED
Yellow
1K
GND
GND
GND
1K
GND
3.3V
3.3V
3.3V
3.3V
3.3V
PESD1CAN
GND
PESD1CAN
3.3V
USB-MICROB
5V
GND
5V 5V
GND
GND
GND
BAT20J
5V
SN74LVC1G66
SN74LVC1G66
VIN
VIN
GND
GND
0.1uF 0.1uF
GND
VIN
P4.0
13
P4.1
14
P4.2
15
P4.3
16
P1.0
29
P1.1
30
P1.2
31
P1.3
32
P0.0
17
P0.1
18
P0.2
19
P0.3
20
P0.4
21
P0.5
22
P0.6
23
P1.7
1
P3.0
9
P2.0
2
P2.1
3
P2.2
4
P2.3
5
P2.5
6
P2.6
7
P2.7
8
P3.1
10
P3.2
11
P3.3
12
VSSA
28
VSSD
26*2
VCCD
25
VDD
27
XRES
24
U2
IN
GND
OUT
EN
BP
R1
R2
C1
C2 C3 C4
C5C6
R3 R4
JP1
J2
1
2
3
4
5
D2
SW1
1 3
42
SW2
1 3
42
D3
R5
R6
D4
1
1
2
2
3
3
D1
1
1
2
2
3
3
D+
D-
VBUS
GND
ID
SHIELD1*3
J3
J5
1
2
3
J6
1
2
3
J7
1
2
3
J8
1
2
3
J9
1
2
3
D5
J11
1
2
3
4
5
6
1
4
2
3 5
U4
1
4
2
3 5
U5
C9 C10
XRES
XRES
SCL
SCL
SCL
SDA
SDA
SDA
SWD_DATA
SWD_DATA
SWD_CLK
SWD_CLK
TXO
TXO
RXI
RXI
BTN
BTN
LED
LED
ISO_POUR
SERVO_0
SERVO_0
SERVO_1
SERVO_1
SERVO_2
SERVO_2
SERVO_3
SERVO_3
SERVO_4
SERVO_4
SDA_OUT
SDA_OUT
SCL_OUT
SCL_OUT
I2C_OUT_EN
I2C_OUT_EN
I2C_OUT_EN
Released under the Creative Commons
Attribution Share-Alike 4.0 License
https://creativecommons.org/licenses/by-sa/4.0/
Design by:
U1G2
CY8C4146LQI-S422
U1G0
CY8C4146LQI-S422
U1G3
CY8C4146LQI-S422
SWD_D
SWD_CLK
U1G4
CY8C4146LQI-S422
USB B
THIS IS A FOUR-LAYER BOARD!