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3
Interface note:
a) Baud rate 9600bps; 8 bit data; 1 bit stop bit; No check.
b) If the upper computer is MCU (3.3v), it is directly connected to TX and RX. If the upper computer
is PC, the RS232 level conversion chip needs to be hooked up.
USB interface definition:
Pin
Name
Definition
Description
1
5V
Power Input
Power Input DC5V
2
D+
Data Output
USB
3
D-
Data Input
USB
4
GND
Power Input
Signal ground. Connected to power
ground
Содержание GM73
Страница 1: ...GM73 Bar Code Reader Module User Manual Hangzhou Grow Technology Co Ltd V1 3 Oct 2020...
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