Sharp MZ-350C Service Manual page 84

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M Z 3500
10-2. Key search timing
Single key entry
Key
/
STROBE
Bounding
n
n
n
n
n
n
n
1 Strobe
•<—5.5ms—M—5ms-*
CYCl e
n
n
n
n
n
15ms
n
n
n
DATA OUT
Two key entry
Key 1
VVL
Key 2
STROBE
n
n
n
n
n
RET
Jl
*—5.5ms—X—5.5ms —M—5ms—M
15ms
M
15ms
n
n
n
n
n
n
n
n
n
DATA
(1)
OUT
DATA
(2)
OUT
-
10-3. Key serial transmission procedure
1) Dataformat
Key -» CPU
i i i i
r~i
2
7
2
6
2
5
2
4
2
3
2
2
2'
DATA
Parity
All nine bits
Command
Key
AM 4 bits
2
2
2 '
Parity
- 91 -

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