Ebyte EBT3001, Руководство пользователя

Страница: 7 / 29

Chengdu Ebyte Electronic Technology Co.,Ltd. EBT3001 User Manual
Copyright ©2012–2022，Chengdu Ebyte Electronic Technology Co.,Ltd.
6
31 X32MO I/A
The inverting output terminal of the frequency
oscillator HSE is connected to one end of a 32MHz
crystal;
32 X32MI A
The input end of the high frequency oscillator HSE ,
the other end of the external 32MHz crystal;
33 WON power supply
The power node of the internal analog circuit needs to
be close to the pin and connect an external 2.2uF
decoupling capacitor;
35 VDC power supply
The power input of the internal analog circuit LDO
regulator needs an external decoupling capacitor. It is
recommended to be no less than 0.1uF , and it is
recommended to connect VDCID through magnetic
beads or directly ;
36 IO_RST I/O/A
To restore the factory side, an external reset button is
required, and the low level lasts about 5s to be
effective;
43 TXD_LED I/O/A
Serial port sending indication terminal, the default
output is high level, when there is data output, it
outputs low level, and when there is continuous data,
it outputs a square wave signal with a period of 80ms
and a low level of 20ms ;
44 RXD_LED I/O/A
Serial port receiving indication terminal, the default
output is high level, when there is data input, it
outputs low level, and when there is continuous data,
it outputs a square wave signal with a period of 80ms
and a low level of 20ms ;
4~6, 9~10,
15~16, 19, 22~23
26,29~30,34,
37~42, 48~48
RESERVED --
K
eep it floating;