Chengdu Ebyte Electronic Technology Co.,Ltd.
E610-433TxxS User Manual
Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
11
4. Recommended Connecting Diagram
No
Brief connection instructions between the module and the MCU (the above
diagram shows the STM8L MCU as an example)
1
The wireless serial module is TTL level, please connect it to a TTL level MCU.
2
For some 5V microcontrollers, it may be necessary to add 4 to 10K pull-up
resistors to the TXD and AUX pins of the module.
20
M0
Input (very
weak pull-up)
In conjunction with M1, determines the 4 modes of operation of
the module (not suspended, grounded if not in use)
21
M1
Input (very
weak pull-up)
in conjunction with M0, determines the 4 modes of operation of
the module (not suspended, grounded if not in use)
22
RXD
Input
TTL serial input, connected to the external TXD output pin.
23
TXD
Output
TTL serial output, connected to the external RXD input pin.
24
AUX
Output
Used to indicate the operating status of the module.
User wake-up external MCU, output low during power-up self-test
initialization; (can be suspended)
25
VCC
-
module power supply positive reference, voltage range: 1.8 to
3.6V DC
26
GND
-
Module ground
