Chengdu Ebyte Electronic Technology Co., Ltd. E220-400T30S User manual
Copyright ©2012–
2018
,
Chengdu Ebyte Electronic Technology Co.,Ltd.
6
3 Size and pin definition
No.
Name
Direction
Function
1
GND
-
Ground
2
GND
-
Ground
3
GND
-
Ground
4
GND
-
Ground
5
M0
Input
(
weak pull-up
)
Work with M1 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
6
M1
Input
(
weak pull-up
)
Work with M0 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
7
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be
configured as open-drain or pull-up input. Ground
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