1 EXAR Chip of TTL to RS232module/RS232 to TTL serial portmodule( Single channel)
Product Introduction
1 EXAR Chip of TTL to RS232module/RS232 to TTL serial portmodule( Single channel)
Wiring instructions
Note :TTL and RS232 terminals should be TXD connected to RXD
Meet TXD RXD
Cross matching
VCC: connect dc 3V-5.5V
GND: connect to GND
TXD: Connect external device TTL terminal RXD
RXD: Connect to external device TTL end TXD
RS232 port:
RXD: Connect to external device RS232 end TXD
TXD: Connect to external device RS232 end RXD
GND: connect to GND