RA8835A
Version 1.0
Dot Matrix LCD Controller
only make repeated reads if the read loop time exceeds the RA8835A series cycle time, tCYC
If it does not, NOP instructions may be inserted in the program loop. tACC, tACV and tCYC limits
are given in section 7-2.
.
7-3 MCU Interface Examples
7-3-1 Z80 to RA8835A Interface
IORQ
A0
A0
A1
to
CS
Decoder
A15
Z80
D0
to
RA8835
D0
to
D7
D7
RD
RD
WR
WR
SEL1
SEL2
RESET
RES
RESET
Figure 7-2A: Z80 to RA8835A Interface
7-3-2 6802 to RA8835A Interface
VMA
A0
A0
A1
to
CS
Decoder
A15
6802
RA8835
D0
to
D0
to
D7
D7
VDD
E
RD
R/W
WR
SEL1
SEL2
RESET
RES
RESET
Figure 7-2B: 6802 to RA8835A Interface
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