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SM5021 Datasheet(PDF) 4 Page - Advanced Analogic Technologies

Part # SM5021
Description  ENCODER
PDF  8 Pages
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Manufacturer  ANALOGICTECH [Advanced Analogic Technologies]
Direct Link  http://www.analogictech.com
Logo ANALOGICTECH - Advanced Analogic Technologies

SM5021 Datasheet(HTML) 4 Page - Advanced Analogic Technologies

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Page 4
V.2.0 Mar 8,2002
C. Transmission Timing
* t1: Key pressing > 32ms
* t2: Transmission time t3 + 108ms ( Four frame )
If t1 is over t3 + 108ms, DOUT will be transmitted again.
[ ( Pressing time ) MOD ( t3 + 108ms ) + 1 ] * 108ms + t3
* t3: Oscillator stable time.
OSC * 384 = 0.8ms
* t4: 3-Bits( Head ) + 2-Bits( Custom Code ) + 7-Bits( Data ) + 6-Bits( Empty ) = 18-Bits (27ms)
* OSC: 455KHz resonator
Key In
t1
OSC
LED
t2
DOUT
t3
t4
Frame 1
Frame 2
Frame 3
Frame 4
SM5021
SAMHOP Microelectronics Corp.
三合微科股份有限公司
ENCODER



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