Chengdu Ebyte Electronic Technology Co,;Ltd E70-915T30S user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd 6
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
32
NC
Reserved pin
Reserved, to be floated
33
NC
Reserved pin
Reserved, to be floated
34
NC
Reserved pin
Reserved, to be floated
