Realistic PRO-2004 - Keys Access Pulse Output; Data Waveform

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KEYS ACCESS PULSE OUTPUT (IC-503)
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~----------------Ir
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201"\ls
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235.51Is
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11O--~ I llooo- t
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10ms
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po~
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POI
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P02 I I Ir--I~ l
6~5"\1s~ I
P03 I I I ,-
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P04 -1~ II""""J---------' ,-
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P05 -1~ 1, ~---I~
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P07
P06
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NOTE: Use a signal at P01 of IC-503 as trigger, and then observe the keys access. pulse when IPROGRAM I
key is pressed.
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DATA WAVEFORM (IC-503)
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-I. 1_, -- DISPLAY OATA-------'~l
'PLL DATA
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DISPLAY DATA
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11'"""---- 16.7ms -_, I I I
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10-, 1_----------- 50.5ms .. - ----------. I
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----',--------------
BUSY
(Pin 13)
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LCD C/O
(Pin 14)
LCD CS
(Pin 15)
CLOCK
(Pin 19)
DATA
(Pin 20)
LT I
(Pin 17)
LT 2
(Pin 16)
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17