Chengdu Ebyte Electronic Technology Co,;Ltd
E70-900T30Suser manual
Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co,;Ltd
7
11
LNA_EN
Output
Internal MCU controlled LNA pin, valid in high level, connect to pin 44
12
PA_EN
Output
Internal MCU controlled PA pin, valid in high level, connect to pin 45
13
NC
Reserved pin
Reserved, to be floated
14
NC
Reserved pin
Reserved, to be floated
15
NC
Reserved pin
Reserved, to be floated
16
M2
Input
M2, M1, M0 jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series when in use.
17
GND
Ground
Ground electrode
18
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)
19
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)
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
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.
22
TMSC
Input
JTAG TMSC
23
TCKC
Input
JTAG TCKC
24
RESET
Input
Reset pin, valid in low level
25
NC
Reserved pin
Reserved, to be floated
26
NC
Reserved pin
Reserved, to be floated
27
AUX
Output
It is used to indicate the operation status of module, for user to wake up
the external MCU, the module outputs low level during self-checking and
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)
28
VCC
-
Power positive reference,
Power supply 2.6V ~ 5.5V DC
29
VCC
-
Power positive reference,
Power supply 2.6V ~ 5.5V DC
30
GND
Ground
Ground electrode
31
GND
Ground
Ground electrode
