Hardware Description; Mechanical Size And Pin Definition - Ebyte E280-2G4T12S User Manual

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3 Hardware description

3.1 Mechanical size and pin definition

Pin Pin
number name direction
Reference
1 GND
place
2 NC
enter
3 M0
enter
4 M1
enter
5 M2
enter
6 RXD
Output
7 TXD
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Pin
Module ground
Empty feet not connected
The combination of M2, M1, and M0 determines the 8 working modes of the module (cannot be
suspended, if not used, it can be grounded)
The combination of M2, M1, and M0 determines the 8 working modes of the module (cannot be
suspended, if not used, it can be grounded)
The combination of M2, M1, and M0 determines the 8 working modes of the module (cannot be
suspended, if not used, it can be grounded)
TTL serial port input, connected to the external TXD output pin; can be configured as open-drain or
pull-up input, see parameter settings for details
TTL serial port output, connected to the external RXD input pin; can be configured as open-drain or
push-pull output, see parameter settings for details
E280-2G4T12S User Manual
Pin usage
7