RA8835A
Version 1.0
Dot Matrix LCD Controller
10-3 Timing Diagrams
10-3-1 8080 Family Interface Timing
A0,CS
tAW8
tAH8
tCYC8
WR , RD
tDH8
tCC
tDH8
tDS
8
D0 to D7
(write)
tACC8
tOH8
D0 to D7
(Read)
Ta = –20 to 75°C
VDD = 4.5 to 5.5V VDD = 2.7 to 4.5V
Signal
Symbol
Parameter
Address hold time
Unit Condition
Min.
10
Max.
—
Min.
10
Max.
—
tAH8
tAW8
tCYC8
tCC
ns
ns
ns
A0, CS
Address setup time
System cycle time
Strobe pulse width
Data setup time
Data hold time
0
—
0
—
note.
120
120
5
—
note.
150
120
5
—
WR ,
RD
—
—
ns
CL =
100pF
tDS8
tDH8
tACC8
tOH8
—
—
ns
—
—
ns
ns
ns
D0 to D7
50
80
—
—
RD access time
Output disable time
10
50
10
55
Note: For memory control and system control commands:
CYC8 = 2tC + tCC + tCEA + 75 > tACV + 245
For all other commands:
CYC8 = 4tC + tCC + 30
t
t
RAiO TECHNOLOGY INC.
www.raio.com.tw
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RAIO [ RAIO TECHNOLOGY INC. ]
