Pin Definition - Ebyte E28-2G4T27SX User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.

3.2. Pin Definition

Pin No. Pin Name
1 GND
2 NC
3 NC
4 NC
5 NC
6 NC
7 NC
8 GND
9 NC
10 GND
11 VCC
12 AUX
13 TXD
14 RXD
15 M1
16 M0
17 M2
18 GND
19 ANT
20 GND
21 GND
22 NC
Copyright ©2012–2020, Chengdu Ebyte Electronic Technology Co., Ltd.
Pin Direction
Ground Ground
- cannot be floated, can be grounded if not used
- cannot be floated, can be grounded if not used
- cannot be floated, can be grounded if not used
- cannot be floated, can be grounded if not used
- cannot be floated, can be grounded if not used
- cannot be floated, can be grounded if not used
Ground Ground
- cannot be floated, can be grounded if not used
Ground Ground
Module power source positive reference.
-
Voltage range: 2.5V ~ 5.5V DC
Used to indicate the module operation status, when user wakes up the
external MCU,it outputs low level during initialization after power on
Input and self-check, can be configured as open-drain output or push-pull
output, please refer to Parameter Configuration.
(can be floated)
TTL serial input, connected to external TXD output pin. Can be
Output configured as open-drain or pull-up input, please refer to Parameter
Configuration.
TTL serial input, connected to external TXD output pin;
Output It can be configured as drain open circuit or pull-up input. See parameter
setting for details
M2、M1、M0 共同组合决定模块 8 种工作模式
Input
M2, M1 and M0 determine eight working modes
Input M2, M1 and M0 determine eight working modes
Input M2, M1 and M0 determine eight working modes
Ground Ground
- Antenna interface (50 Ω characteristic impedance)
Ground Ground
Ground Ground
- cannot be floated, can be grounded if not used
E28-2G4T27SX User Manual
Function
6