Chengdu Ebyte Electronic Technology Co.,Ltd.
Copyright ©2012–2020
Chengdu Ebyte Electronic Technology Co.,Ltd.
13
And add a pull-up resistor of 1M (not floating, if not groundable).
19
RXD
input
TTL serial input, connected to an external TXD output pin;
Can be configured as an open-drain or pull-up input, see parameter settings
20
TXD
output
TTL serial output, connected to external RXD input pin;
Can be configured as an open-drain or push-pull output, see parameter settings
21
TMSC
input
JTAG TMSC
22
TCKC
input
JTAG TCKC
23
NC
Keep
your
feet
Leave unused, need to dangling
24
NC
Keep
your
feet
Leave unused, need to dangling
25
AUX
output
Indicates the working status of the module, the user wakes up the external
MCU
, the output
is low during power-on self-test initialization
,
and can
be configured as an open-drain output, or push-pull output, see parameter
settings for details;
An external 1K protection resistor (which can be floated)
is required in
series for use
26
VCC
Module power supply positive reference, voltage range: 2.2~3.8V DC
27
GND
Referent
ial
Module ground
28
NC
Keep
your
feet
Leave unused, need to dangling
29
NC
Keep
your
feet
Leave unused, need to dangling
30
NC
Keep
your
feet
Leave unused, need to dangling
31
NC
Keep
your
feet
Leave unused, need to dangling
32
RESET
input
Module reset pin
33
NC
Keep
your
feet
Leave unused, need to dangling
34
NC
Keep
Leave unused, need to dangling
