Other Interface - Sharp MZ-3500 Service Manual

M 2 3500
8. OTHER INTERFACES
8-1. Clock circuit
1) Schematic
T; 10 Ii2 u "
HDH
* l«"-.r 1
2) Clock timing
READ HOLD . READ
mode mode [ mode
Cn(CO~C2) 0 X 3 Y~l
STB / \ / ^Ones digit of seconds
Tens digit of seconds
WRITE HOLD
mode mode
Tens digit of month '
SET i HOLD
mode I mode
DIN Don't care X
CLK
DOUT
Tens digit of seconds
Tens digit of month*
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