Chengdu Ebyte Electronic Technology Co., Ltd.
E29-400TXXX product data sheet
Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
9
8
TXD
Output
TTL UART outputs, connects to external RXD input pin.
9
AUX
Output
Used to indicate the working status of the module;
For user to wakes up the external MCU and it outputs low level during
power-on self-check initialization; (can be left floating)
10
VCC
-
Module power positive reference, voltage range: 2.6
～
5.5V DC
11
GND
-
Module ground
12
RST
-
Module Reset pin
13
GND
-
Module ground
14
SWDIO
-
-
15
VDD
-
3.3V
16
RS485
-
RS485 enable
17
PA-RXEN
-
NC
18
PA-TXEN
-
NC
19
GND
-
Module ground
20
GND
-
Module ground
21
ANT
-
Antenna
22
GND
-
Module ground
3.2 E29-400T22D Dimension and Pin definition
