Sharp MZ-3500 Service Manual page 84

.,
.......
_---
..
-,
-
M Z 3500
10-2_ Key search timing
Single key entry
/
Bounding
Key
r
%
fN'
STROBE
J1
n
n n
n
n
n n n
/
1 Strobe
..... 5.5ms-+4-5ms ...
~ 15m~ ---1
cycle
n
n
n n n
n
RETURN
DATA OUT
I
rl
lj4
Two key entry
Key 1
,tt
~
Key 2
' "
~
STROBE
Jl
n
n
n
n
n n
IL
..... 5_5ms~.5ms --.H-5ms
tt
15ms
U
15ms
H 5ms_
{
n
n
n
n
AET
n
n
n
DATA
(1 ,
I
OUT
DATA
(2)
•
OUT
10-3. Key serial transmission procedure
1) Data format
Key .... CPU
27
2
6
2 5
24
2
3 22 21
2°
DATA
Parity All nine bits
Command
CPU ~ Key All 4 bits
Parity
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