Ebyte E70-433T14S2, User Manual, Page: 7 / 27

Chengdu Ebyte Electronic Technology Co,, Ltd E70-433T14S2 user manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd 6
initialization at power on, it can be configured as open-drain output or pull-up
output, please refer to parameter setting par. An external 1k protective
resistor shall be connected in series while using ( can be floated)
17 TXD Output
TTL serial port output connecting to external RXD input pin. It can be
configured as open-drain or push-pull input , please refer to Parameter setting.
An external 1k protective resistor shall be connected in series when in use.
18 TCKC Input JTAG TCKC
19 TMSC Input JTAG TMSC
20 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 1k
protective resistor shall be connected in series when in use.
21 M1 Input
M2, M1, M0 jointly 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)
22 M0 Input
M2, M1, M0 jointly 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)
23 GND
Ground Ground electrode
24 ANT
Antenna (50Ω characteristic impedance)
 This product can achieve Pin compatibility, Pin to Pin replacement

The single-chip microcomputer control PA LNA truth value table is as follows ：
PA_EN LNA_EN
Transmitting 1 0
Receiving 0 1
Sleeping 0 0