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NuMaker-HMI-MA35D1-S1
Nov. 2, 2022
Page
87
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Rev 1.01
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6.2.15
RS232 Schematic
Figure 6-26 shows the RS232 circuit of the NuMaker-BASE-MA35D1B1 board.
Figure 6-26 RS232 Schematic
VDD3V3
M2
VSS
VDD3V3
VSS
N78
UR11_CT
UR11_RT
Title
Size
Document Number
Rev
Date:
Sheet
of
RS232
V2.0
NuMaker_MA35D1_Base
nuvoTon Technology Corp.
A
15
22
Thursday, February 10, 2022
PK[3:0]
PL[3:0]
N86
PK[3:0]
PL[3:0]
UR16_TXD
VSS
UR16_TX
N80
N83
N82
N79
N84
UR16_RX
N81
VSS
VSS
VDD3V3
UR16_RXD
U22
SN75C3232EDR
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2o
7
R2in
8
VCC
16
GND
15
T1o
14
R1in
13
R1o
12
T1in
11
T2in
10
R2o
9
UR16_RX
UR16_TX
N85
CON14
DB9_FEMALE
1
6
2
7
3
8
4
9
5
10
11
UR16_nRTS
UR16_nCTS
UR16_RT
UR16_CT
UR16_RT
UR16_CT
VSS
N71
UR11_TXD
UR11_RX
N75
N72
UR11_TX
N74
VDD3V3
N76
N73
UR11_RXD
U21
SN75C3232EDR
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2o
7
R2in
8
VCC
16
GND
15
T1o
14
R1in
13
R1o
12
T1in
11
T2in
10
R2o
9
VSS
CB32
0.1u
C0603
RS232_16
RS232_11
VSS
CB34
0.1u
C0603
CB37
0.1u
C0603
CB39
0.1u
C0603
CB31
0.1u
C0603
L13
FB
L14
FB
CB36
0.1u
C0603
C66
0.01uF
C0603
C65
0.01uF
C0603
VSS
VSS
CB33
0.1u
C0603
CB35
0.1u
C0603
CB38
0.1u
C0603
CB40
0.1u
C0603
UR11_TX
UR11_nCTS
UR11_RX
N77
UR11_RT
CON13
DB9_FEMALE
1
6
2
7
3
8
4
9
5
10
11
UR11_nRTS
UR11_CT
PK2
UR16_RXD
R251
0
R0603
UR16_nRTS
PK0
R250
0
R0603
PK1
UR16_nCTS
R249
0
R0603
PK3
UR16_TXD
R252
0
R0603
UART_16 (EBI_ADR8/9/10/11)
M1
UR11_nRTS
PL0
PL2
UR11_RXD
R247
0
R0603
PL1
UR11_nCTS
R246
0
R0603
PL3
UR11_TXD
R245
0
R0603
R248
0
R0603
UART_11 (EBI_AD11/12/13/14)