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EHUOYAN
YHY522R
RFID module
Page 8 of 36
Figure 4 – YHY522R Reader/Writer mode
10
. Digital interface
________ _____________________
10.1 RS232 Interface
Figure 5 – YHY522R RS232 interface to host
10.3 Slection of the transfer speeds
The default transfer speed is 19.2 kbit/s.
To change the transfer speed, the host controller has to write a value for the
new transfer speed by the
CONFIG
command, after reset the module, the
new speed will active.
Table 5: Selectable transfer speeds
Transfer Speed [kbit/s]
Configure Code
2.4 1
4.8 2
9.6 3
14.4 4
19.2 5
38.4 6
57.6 7
115.2 8
230.4 9
10.4 Transfer Protocol
YHY522
J1
RXD
TXD
HOST
TXD
RXD