Ebyte E70-433T S Series, User Manual

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Chengdu Ebyte Electronic Technology Co,;Ltd E70-433TxxSx user manual
Copyright ©2012–2023
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Chengdu Ebyte Electronic Technology Co,;Ltd 7
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
35 NC Reserved pin Reserved, to be floated
36 NC Reserved pin Reserved, to be floated
37 NC Reserved pin Reserved, to be floated