Ebyte E22-230TXXS User Manual page 10

Chengdu Ebyte Electronic Technology Co., Ltd.
No. Name
1 GND
2 VCC
3 AUX
4 TXD
5 RXD
6 M1
7 M0
11 ANT
12 GND
13 GND
14 GND
18 NC
19 NC
20 NC
21 +3.3V
22 NC
23 GND
24 NC
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
Direction
-
Module power supply positive reference，Power supply：3.3～5.5V DC
-
The user wakes up the external MCU and outputs low level during power on
Output
Output TTL UART outputs, connects to external (MCU, PC) RXD input pin.
Input TTL UART inputs, connects to external (MCU, PC) RXD output pin.
Work with M1 to decide 4 working modes of module (not suspended, if not
Input（weak pull-up）
Work with M0 to decide 4 working modes of module (not suspended, if not
Input（weak pull-up）
Output
-
-
-
-
-
-
Power pin when program is loading（suspend, no need to connect，cannot be
-
-
-
-
Function
Module ground
self-test initialization; (can be suspended)
used, could be grounded).
used, could be grounded).
Antenna(high frequency signal output，50 ohm）
Ground
Ground
Ground
Empty
Empty
Empty
used as power supply）
Empty
Module Ground
Empty
E22-230TXXS User manual
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