Chengdu Ebyte Electronic Technology Co.,Ltd.
Copyright ©2012–2020
Chengdu Ebyte Electronic Technology Co.,Ltd.
17
3. 4 E70-433MT14S dimensional drawing and pin definition
Pin serial
number
Pin name
Pin
orientation
Pin usage
1
VCC
power supply
Module power supply positive reference, voltage range: 2.2~3.8V DC
2
GND
Referential
Ground, connected to the power supply reference ground
3
RESET
input
Module reset pin, active low
4
TCK
Input/output
Program download port, JTAG TCKC
5
TMS
Input/output
Program download port, JTAG TMSC
6
ANT
Input/output
Antenna interface, stamp hole (50Ω characteristic impedance).
7
GND
Referential
Ground, connected to the power supply reference ground
8
NC
Keep your feet
Leave unused, need to dangling
9
NC
Keep your feet
Leave unused, need to dangling
10
NC
Keep your feet
Leave unused, need to dangling
11
AUX
output
Used to indicate module operating status, user wakes up external MCU
, output
low
during POST initialization
, can be
configured as open-drain output, or push-pull
output, see parameter settings (can be floated).
12
TXD
output
It can also be used as a TTL serial output, connected to an external RXD input pin;
Can be configured as an open-drain or push-pull output, see parameter settings
13
RXD
input
TTL serial input, connected to an external TXD output pin;
