Chengdu Ebyte Electronic Technology Co.,Ltd.
E150-400T30S user manual
Copyright ©2012–2022
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Chengdu Ebyte Electronic Technology Co.,Ltd.
7
Chapter 3 Mechanical Dimensions and Pin Definition
Pin
number
Pin name
Pin direction
pin usage
1
VCC
Input
Module power positive reference, voltage range: 3.3 ~ 5.5V DC
2
GND
Input
Module power ground
3
SWCLK
Input
SWD debug pin
4
NRST
Input
Reset module pin, it needs to be pulled low for at least 10 ms and then
released to perform external reset
5
SWDIO
Input
SWD debug pin
6
485_EN
Output
When connecting an external UART to RS485 chip, this pin is used as the
control terminal
7
AUX
Output
Used to indicate the working status of the module, or to wake up an
external MCU