E22-230T30/33S Pins - Ebyte E22-230TXXS User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.
pull-up）
M1 Input（weak
21 M1
pull-up）
22 RXD
23 TXD
24 AUX
25 VCC
26 GND

3.2 E22-230T30/33S pins

Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
Work with M0 to decide 4 working modes of module (not suspended, if not used, could
Input TTL UART inputs, connects to external (MCU, PC) TXD output pin.
Output TTL UART inputs, connects to external (MCU, PC) RXD output pin.
Output
The user wakes up the external MCU and outputs low level during power on self-test
- Module power supply positive reference，Power supply：2.3～5.5V DC
-
be grounded).
be grounded).
Used to indicate the working state of the module;
initialization; (can be suspended)
Module ground
E22-230TXXS User manual
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