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3
Step 3: After applying the power, the 5-digits of the 7-SEG LED will continuously show as
follows.
If the non-display version of module is being used, please continue to the next step.
Step 4: Check that the red LED continuously blinks four times and wait for one second to
next cycle. The diagram show as follows:
Note: Only the display version of the module will include a 5-digit 7-SEG LED.
Hour
Minute
Second
CA0910
Connect to the COM
Port of Host PC
Connect to the
Power supply
Vs+
GND
5-digit 7-SEG LED
Red LED
Connect INIT* with
GND
TXD
RXD
GND