UM0193 Datasheet, PDF (26/35 Pages) STMicroelectronics – Getting Started with the ARMIC30 Evaluation Board

ARMIC30 schematic diagrams
UM0193
Figure 25. RS-232, RS-485 and CAN connector schematics
TxD 232
RxD 232
5V
C22
100n
5V
RS-232
R22
10k
U3
J35
1
2
C19
100n
C21
100n
11
10
T1IN
T2IN
T1OUT
T2OUT
14
7
12
9
R1OUT
R2OUT
1 _C1+
3
4
C1-
C2+
R1IN
R2IN
13
8
5V
V+ ²
C20
100n
ETXD0
ERXD0
R23 0R
R24 M1
C23
5 _C2-
ST202E
V- ⁶
C24 4n7/500V
100n
5V
TxD 485
nDE 485
RxD 485
J11
4
3
1
2
R27
390R
U4
DI
DE
RO
RE
5V
VCC
A
B
GND
8
6
7
5
ST485A
C25
100n
RS-485
5V
R26 220R
NA
R28
390R _5V
NA
R25
390R
NA
J10
1
2
1 ^J13 2
R29 0R
R30 0R
R31 M1
C26
J8
1
3
2
4
5
6
7
8
9
M1
M2
DSUB9-PLUG
J12
3
8
1
2
4
7
9
6
5
M1
M2
DSUB9-SOCKET
4n7/500V
TxD CAN
RxD CAN
ASC CAN
5V
R32
0R
NA
R34
0R
NA
CAN
5V
U5
R33 120R
3
1
4
8
2
VS
TX0
RX0
ASC
GND
CAN_L
CAN_H
RX1_Ref
6
7
5
L9616
5V
C27
100n
J14
1
2
R35 0R
R36 M1
C28
J15
2
7
1
4
5
8
9
3
6
M1
M2
DSUB9-PLUG
4n7/500V
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