Schematics

1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Title:
Drawn:
Page:
Code:
Size:
Time:Date:
Revision:
1 of 1
V1.0
2021/3/1
11:40:08
A3
DFR0778
LattePanda V2 RS232
Aaron-CD
FD1
FD2
VCC
1
GND
2
T_OUT
5
R_IN
6
RGND
7
NC
8
NC
10
RXD
11
TXD
12
TD531S232H
U1
1
2
3
4
5
6
7
8
9
11
10
J1
PGND
1uF
C1
22uhL1
1uF
C2
D1
PTC1
Q1
PGND
PGND
PGND
PTC2
VCC
GND
LED1
2k
R2
LED2
2k
R3
10k
R1
VCC
VCC
D3
PGND
Q4
1 2
3 4
5 6
7 8
9 10
11 12
P2
VCC
GND
TXD
1
DTR#
2
RTS#
3
VCCIO
4
RXD
5
RI#
6
GND
7
NC
8
DSR#
9
DCD#
10
CTS#
11
CBUS4/SLEEP#
12
CBUS2/TXDEN
13
CBUS3/PWREN#
14
USBDP
15
USBDM
16
3V3OUT
17
GND
18
RESET
19
VCC
20
GND
21
CBUS1/RXLED#
22
CBUS/TXLED#
23
NC
24
AGND
25
TEST
26
OSCI
27
OSCO
28
FT232RL
U2
VCC
VCC
100nF
C3
GND
100nF
C4
GND
D+
D-
GND
22RR5RXD
TXD
1
2
3
P3
RXD
TXD
12
34
56
78
910
1112
P1
22RR4
D2 D4
GND
22RR6
22RR7
D+
D-
PIC101
PIC102
COC1
PIC201
PIC202
COC2
PIC301
PIC302
COC3
PIC401
PIC402
COC4
PID101
PID102
COD1
PID201
PID202
COD2
PID301
PID302
COD3
PID401
PID402
COD4
COFD1
COFD2
PIJ101
PIJ102
PIJ103
PIJ104
PIJ105
PIJ106
PIJ107
PIJ108
PIJ109
PIJ1010
PIJ1011
COJ1
PIL101 PIL102
COL1
PILED101 PILED102
COLED1
PILED201 PILED202
COLED2
PIP101 PIP102
PIP103 PIP104
PIP105 PIP106
PIP107 PIP108
PIP109 PIP1010
PIP1011 PIP1012
COP1
PIP201 PIP202
PIP203 PIP204
PIP205 PIP206
PIP207 PIP208
PIP209 PIP2010
PIP2011 PIP2012
COP2
PIP301
PIP302
PIP303
COP3
PIPTC101 PIPTC102
COPTC1
PIPTC201 PIPTC202
COPTC2
PIQ101
PIQ102
COQ1
PIQ401
PIQ402
COQ4
PIR101
PIR102
COR1
PIR201 PIR202
COR2
PIR301 PIR302
COR3
PIR401 PIR402
COR4
PIR501 PIR502
COR5
PIR601 PIR602
COR6
PIR701 PIR702
COR7
PIU101
PIU102
PIU105
PIU106 PIU107
PIU108
PIU1010
PIU1011
PIU1012
COU1
PIU201
PIU202
PIU203
PIU204
PIU205
PIU206
PIU207
PIU208
PIU209
PIU2010
PIU2011
PIU2012
PIU2013
PIU2014 PIU2015
PIU2016
PIU2017
PIU2018
PIU2019
PIU2020
PIU2021
PIU2022
PIU2023
PIU2024
PIU2025
PIU2026
PIU2027
PIU2028
COU2