LC640.480.21-065 Operations Manual (OM610-00)
10
Signal Timing
Video signal timing diagrams are shown in Figures 2 through 4 on the following pages.
Table 8 refers to these diagrams.
Table 8. Video Signal Timing.
Parameter
Symbol
Min.
Typ.
Max.
Unit
CLK
Frequency
1
1/tc
21.0
25.175
29.0
MHz
Duty
t ch/ t c
0.4
0.5
0.6
–
Rise, fall
t crf
–
–
10
ns
30.0
31.778
33.6
µ
s
Period
2
t h
–
800
–
CLK
Display period
t hd
640
CLK
Front-porch
t hf
2
16
–
CLK
Pulse width
t hp
10
96
–
CLK
t hb
5
48
–
CLK
Back-porch
*) t hp + t hb
64
144
–
CLK
CLK-Hsync timing
t hch
12
–
–
ns
Hsync-CLK timing
t hcx
8
–
–
ns
Hsync-Vsync timing
t vh
15
–
–
ns
Vsync-Hsync timing
t vs
15
–
–
ns
Hsync
Rise, fall
t hrf
–
–
10
ns
16.1
16.683
17.2
ms
Period
3
t v
–
525
–
H
Display period
t vd
480
H
Front-porch
t vf
1
12
–
H
Pulse width
t vp
2
2
–
H
t vb
4
31
–
H
Back-porch
*) t vp + t vb
6
33
–
H
Vsync
Rise, fall
–
–
–
10
ns
CLK-DATA timing
t ds
8
–
–
ns
DATA-CLK timing
t dh
12
–
–
ns
Rise, fall
t drf
–
–
10
ns
DATA
R0-R5
G0-G5
B0-B5
DE-CLK timing
t es
8
–
–
ns
CLK-DE timing
t eh
12
–
–
ns
DE
Rise, fall
t erf
–
–
10
ns
1
39.722 ns (Typ.)
2
31.468 kHz (Typ.)
3
59.94 Hz (Typ.)
Note
: Keep all parameters within the specified range. Do not operate the LCD
module without an input DE signal.
