Chengdu Ebyte Electronic Technology Co,;Ltd E70-915T14S user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd 6
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
M 2
Input
M2, M1, M0 jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series when in
use.
16
GND
Ground
Ground electrode
17
M 1
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)
18
M 0
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
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
20
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.
21
TMSC
Input
JTAG TM SC
22
TCKC
Input
JTAG TCKC
23
NC
Reserved pin
Reserved, to be floated
24
NC
Reserved pin
Reserved, to be floated
25
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)
26
VCC
voltage
：
2.1V ~ 3.8V DC
27
GND
Ground
Ground electrode
28
NC
Reserved pin
Reserved, to be floated
29
NC
Reserved pin
Reserved, to be floated
30
NC
Reserved pin
Reserved, to be floated
31
NC
Reserved pin
Reserved, to be floated
32
RESET
Input
Reset pin
33
NC
Reserved pin
Reserved, to be floated
34
NC
Reserved pin
Reserved, to be floated
