1
1
2
2
3
3
4
4
D
D
C
C
B
B
A
A
7
19
RS485 / RS422 / RS232
AKX00032
V1.1
2021-05-11
15:10:58
RS485_RS232.SchDoc
Title:
ID:
Date:
File:
Revision:
Sheet
of
Time:
S.Navaretti
Author:
Reference Designs ARE PROVIDED "AS IS" AND "WITH ALL FAULTS. Arduino SA DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING PRODUCTS, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Arduino SA may make changes to specifications and product descriptions at any time, without notice. The Customer must not rely on the absence or characteristics of any features or instructions marked "reserved"
or "undefined". Arduino SA reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The product information on the Web
Site or Materials is subject to change without notice.
Do not finalize a design with this info. ARDUINO and other Arduino brands and logos and Trademarks of Arduino SA. All Arduino SA Trademarks cannot be used without owner's formal permission.
RevAuthor:
S.Navaretti
CTS
RTS
RX
TX
UART
485_TX
485_CTS
485_RTS
485_RX
TX_P
RX_N
RX_P
TX_N
RS485_RS232
100nF
25V
C38
+3V3
100nF
25V
C36
100nF
25V
C35
100nF
25V
C39
+3V3
0
R127
0
R128
U19
SP335ECR1-L
25V
1µF
C37
TP90
TP89
TP88
TP87
TP86
TP78
TP79
TP81
TP83
TP103
GREEN
1k
R132
1k
R133
DL34
DL35
RED
485_RX
485_TX
100k
R168
+3V3
+3V3
R128 DNP