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10
HA:
Clock frequency for the counter. This signal is counted and decoded to perform
synchroni-
zation with the comman
signal, Hl-H7,
generated from the CPU II.
DSIP:
With high level of this
signal,
processing of display operation is indicated (RAM data
designated by Hl-H8 is sent out on SI -S40).
The data stored in the display buffer is carried through SI-S40
(Fig.
2-3-2) to be fed
to
the LCD.
(To
indicate
"4"
on the
display,
H4 and HS are
engaged
for
SI,
H3 and
HS
for
S2,
etc.
,
all
the same
throughout S6-S40.)
Fig
2-3-2
S2
Sl
H7
H6
LJl....____flJ
L
I
H5
LJ
H4
H3
H2
Hl
-----------
-----------
GND
-----
VA
--------.-----------Vs
--------
Vn1SP
HA
DI SP
0.5ms
~
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