RF125
NiceRF Wireless Technology Co., Ltd.
Rev 1.1
- 11 -
(2)RF125-RX:
Pin number
Pin
definition
I/O
Description
1
PAIR
I
Code pairing button, pull down for more than 1 second
to enter code pairing mode, usually high level
2
TXD
O
Data output port
3
RXD
I
Reserved for factory use
4,8,10
GND
Power ground
5
VCC
Can be externally connected with a positive voltage of
2.5-3.6V
6
WAKE UP
O
After receiving 125K signal, output high pulse
7
LED
O
External LED light can be connected, high level light
up
9
ANT3
I
External 125K patch antenna, the inductance is 7.2mH
11
ANT2
I
External 125K patch antenna, the inductance is 7.2mH
12
ANT1
I
External 125K patch antenna, the inductance is 7.2mH
Pin definition
I/O
Voltage
Description
1
VCC
Externally connect with DC 9-12V
2,4
GND
Externally connect with power ground
3
+3.3V
Externally connected with voltage of 2.5-3.6V
5
TXD
O
Serial output port
6
RXD
I
Serial input port
7,8
ANT
O
External 125K transmitting antenna
Содержание G-NiceRF RF125
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