![](/html/SamHop/73508/page5.png)
三合微科股份有限公司
SAMHOP Microelectronics Corp.
SM5021
ENCODER
D. SM5021A Transmission Waveform
Normal Condition
Key 1
Key2
OSC
LED
DOUT
F1 F2 F3 F4
F1 F2 F3 F4 F1 F2 F3 F4
Overlap Condition
If more than one key is pressed, transmission stops.
Key 1
Key2
OSC
LED
DOUT
F1 F2
t > 32ms
F1 F2 F3 F4
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V.2.0 Mar 8,2002