Dimension And Pin Defintion - Ebyte E28-2G4T12S User Manual

SX1280 Wireless Module

3. Dimension and Pin Defintion

Pin No. Pin Name
1 GND
2 NC
3 M0
4 M1
5 M2
6 RXD
7 TXD
8 AUX
9 VCC
10～11 GND
NC
12～19
20 GND
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Pin Direction
Ground Ground
Disconnected
M2, M1 and M0 jointly decide the 8 operation modes.
Input
(cannot be floated, can be grounded if not used)
M2, M1 and M0 jointly decide the 8 operation modes.
Input
(cannot be floated, can be grounded if not used)
M2, M1 and M0 jointly decide the 8 operation modes.
Input
(cannot be floated, can be grounded if not used)
TTL serial input, connected to external TXD output pin. Can be configured as
Input
open-drain or pull-up input, please refer to Parameter Configuration.
TTL serial output, connected to external RXD input pin Can be configured
Output
open-drain or push-pull output, please refer to Parameter Configuration.
Used to indicate the module operation status, when user wakes up the external
MCU,it outputs low level during initialization after power on and self-check, can be
Output
configured as open-drain output or push-pull output, please refer to Parameter
Configuration. (can be floated)
Module power source positive reference.
Voltage range: 2.3 ~ 5.5V DC
Ground Ground
Disconnected
Ground Ground
E28-2G4T12S User Manual
Function
4