Figure 4. Schematic Diagram (Rs-485 And Can) - ARTERY AT32-Comm-EV User Manual

A
B
C
D
2020.5.7

Figure 4. Schematic diagram (RS-485 and CAN)

1 2
+3V3
R14
47K
SP3485EN-L/TR
4
R16 330R
PA2 PA2/USART2_TX
DI
3
DE
2
PA1 R18 330R PA1/USART2_RTS
RE#
1
PA3 R19 330R PA3/USART2_RX
RO
R25 330R
PB9 PB9/CAN_TX
+5V
R27 330R
PB8 PB8/CAN_RX
C8
0.1uF
1 2
3 4
+3V3
R15
U2
10K
5
GND
6
A
7
B
8
VCC
+3V3
C7
R20
D11
0.1uF
10K
SMAJ6.8CA
GND
GND
GND
+5V
R23
47K
U3
TJA1042T/3/1J
1 8
TXD STB
GND
2 7
GND CANH
GND
3 6
VCC CANL
4 5
RXD VIO
R28 0R
C11 0.1uF
+5V
3 4
11
AT32-Comm-EV User Manual
5
JP2
1
1
2
2
(Default ON)
R17
120R
RS485_A
D10 RS485_B
SMAJ6.8CA
D12
SMAJ6.8CA
GND
JP1
1
1
2
2
(Default ON)
R26
120R
CAN_H
D13
CAN_L
SMAJ6.8CA
D14 D15
SMAJ6.8CA SMAJ6.8CA
GND GND
Title:
RS485 & CAN
Company: Artery Technology
Date: 2022-05-07 Drawn By:
5
A
1
1
2
2
CN3
KF126-5.0
RS485
B
C
1
1
2
2
CN4
KF126-5.0
CAN
D
1.0
REV:
2
Sheet:
SD
Rev 1.00