Chengdu Ebyte Electronic Technology Co,;Ltd
E70-433TxxSx user manual
Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co,;Ltd
9
No.
Pin item
Pin direction
Application
1
GND
Ground
Ground electrode
2
ANT
Antenna (50 Ω characteristic impedance)
3
NC
Reserved pin
Reserved, to be floated
4
NC
Reserved pin
Reserved, to be floated
5
NC
Reserved pin
Reserved, to be floated
6
LNA_ EN
Output
Internal MCU controlled LNA pin, valid in high level, connect to pin 44
7
PA_EN
Output
Internal MCU controlled PA pin, valid in high level, connect to pin 45
8
NC
Reserved pin
Reserved, to be floated
9
NC
Reserved pin
Reserved, to be floated
10
NC
Reserved pin
Reserved, to be floated
11
NC
Reserved pin
Reserved, to be floated
12
NC
Reserved pin
Reserved, to be floated
13
NC
Reserved pin
Reserved, to be floated
14
NC
Reserved pin
Reserved, to be floated
15
M2
Input
M2, M1, M0jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series when in use.
16
GND
Ground
Ground electrode
17
M1
Input
M2, M1, M0jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series and a 1M
pull-up resistor shall be added when in use. (Cannot be floated, it can be
grounded when not used)
18
M0
Input
M2, M1, M0jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series and a 1M
pull-up resistor shall be added when in use. (Cannot be floated, it can be
grounded when not used)
19
RXD
Input
TTL serial port input connecting to external TXD pin. It can be configured
as open-drain or high pull input, please refer to Parameter setting. An
external 1 k protective resistor shall be
connected in series when in use
