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Chengdu Ebyte Electronic Technology Co,;Ltd
2
LOCK
3
RXD
4
TXD
5
AUX
6
VCC
7
GND
8
ANT
9
GND
10
GND
11
GND
4 Connect to MCU
No.
1
The UART module is TTL level., please collect with M CU.
2
For some M CU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.
Chengdu Ebyte Electronic Technology Co,;Ltd
Copyright ©2012–2019，
M odule synchronization indication: high level indicates that both sides of
communication have been synchronized, and data transmission can be
Input
carried out; low level indicates that both sides have not been
synchronized, at which time data transmission will lead to data loss
TTL UART inputs, connects to external (M CU, PC) TXD output pin. Can
Input
be configured as open-drain or pull-up input.
TTL UART outputs, connects to external RXD (M CU, PC) input pin. Can
Output
be configured as open-drain or push-pull output
To indicate module ' s working status & wakes up the external M CU.
Output
During the procedure of self-check initialization, the pin outputs low
level. Can be configured as push-pull output (suspending is allowed).
Power supply ：2.1~ 5.5V DC
Input
Ground
Input
Antenna interface (hf signal output pin)
Output
Antenna interface (high frequency signal reference ground)
Output/Input
Ground
Output
Ground
Output
Description（STM8L MCU）
E62-433T20S user manua
l
6
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