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| SM5021 Datasheet, PDF (6/8 Pages) Nippon Precision Circuits Inc – Crystal Oscillator Module ICs | |||
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SAMHOP Microelectronics Corp.
SM5021
ENCODER
E. SM5021B 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, multi-key data transmission.
Key 1
Key2
OSC
t > 32ms
t > t3 + 108ms
LED
DOUT
K1 K1 [ K1+K2 ] K2 K2 K2 K2 K2 K2
FFFFFFFFFF
Page 6
V.2.0 Mar 8,2002
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