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Chengdu Ebyte Electronic Technology Co.,Ltd.
14
NC
15
NC
16
NC
17
NC
18
NC
19
GND
20
GND
21
ANT
22
GND
4. Connection diagram
Brief description of the connection between the module and the single-chip microcomputer
No.
(the above figure takes the STM8L single-chip microcomputer as an example)
1
The wireless serial port module is TTL level, please connect with TTL level MCU.
For some 5V microcontrollers, it may be necessary to add 4-10K pull-up resistors to the TXD and AUX pins of the
2
module.
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
Reserved
(OCDSDA)
Reserved
(VDD）
Reserved
PA4
Reserved
PA2
Reserved
GPIO3
-
Module ground
-
Module ground
-
antenna
-
Module ground
E330-400T13S User Manual
7
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