RA8835A
Version 1.0
Dot Matrix LCD Controller
10-3-3 Display Memory Read Timing
EXT￠0
tC
tCE
tW
tW
VCE
VA0 to VA15
tCYR
tASC
tRCS
tAHC
VR / W
tRCH
tCEA
tCE3
tOH2
tACV
VD0 to VD7
Ta = –20 to 75℃
VDD = 4.5 to 5.5V VDD = 2.7 to 4.5V
Signal
Symbol
Parameter
Unit Condition
Min.
Max.
Min.
Max.
EXT Φ0
tC
Clock period
100
—
125
—
ns
ns
VCE HIGH-level
pulse width
tW
tC – 50
—
tC – 50
—
VCE
VCE LOW-level
pulse width
tCE
2tC – 30
3tC
—
—
2 tC – 30
3tC
—
—
ns
ns
tCYR
Read cycle time
Address setup time
to falling edge of
VCE
Address hold time
from falling edge of
VCE
Read cycle setup
time to falling edge
of VCE
Read cycle hold time
from rising edge of
VCE
tASC
tAHC
tRCS
tRCH
tC – 70
2 tC – 30
tC – 45
0.5tC
—
—
—
—
tC – 100
2tC – 40
tC – 60
0.5tC
—
—
—
—
ns
VA0 to
VA15
ns
CL = 100
pF
ns
ns
VRD
tACV
tCEA
Address access time
VCE access time
Output data hold
time
—
—
3tC – 100
2tC – 80
—
—
3tC – 115 Ns
2tC – 90
Ns
VD0 to
VD7
tOH2
tCE3
0
0
—
—
0
0
—
ns
VCE to data off
time
—
ns
RAiO TECHNOLOGY INC.
www.raio.com.tw
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RAIO [ RAIO TECHNOLOGY INC. ]
