Displays, Andpsi121ga0s-hb-kit – Purdy ANDpSi121GAOS-HB-KIT User Manual
Page 3
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
7/27/07
Tel: 408.523.8216 • Fax: 408.733.1287 •
3
www.purdyelectronics.com
Displays
Notes:
Refer to “Timing Chart” below. If DE is fixed to “H” or “L” level for certain period while NCLK is supplied, the panel displays black w/some flicker.
If NCLK is fixed to “H” or “L” level for certain period while DE is supplied, the panel may be damaged. Please adjust LCD operating signal timing and FL
driving frequency, to optimize the display quality. There is a possibility that flicker is observed by the interference of LCD operating signal timing and
FL driving condition (especially driving frequency), even if the condition satisfies above timing specifications and recommended operating condi-
tions. Do not make
t
v
,
t
vhd and
t
vds fluctuate. If
t
v,
t
vhd, and
t
vds are fluctuate, the panel display black. In case of using the long frame period, the
deterioration of display quality, noise, etc. may be occurred. NCLK count of each Horizontal Scanning Time should be always the same. V-Blanking
period should be ‘n’ X “Horizontal Scanning Time”. (n:integer) Frame period should be always the same.
Timing Chart
Timing Specifications
(see Notes below)
Item
Symbol
Min
Typ
Max
Unit
Horizontal Scanning Term
t
h
1334 x
t
c
1344 x
t
c
–
clock
H-sync Pulse Width
t
hw
4 x
t
c
136 x
t
c
–
clock
Horizontal Front Porch
t
hfp
4 x
t
c
24 x
t
c
–
clock
Horizontal Back Porch
t
hbp
24 x
t
c
160 x
t
c
–
clock
Horizontal Data Sync Period
t
hds
32 x
t
c
296 x
t
c
–
clock
Horizontal Display Term
t
hd
1024 x
t
c
1024 x
t
c
1024 x
t
c
clock
Frame Period
t
v
778 x
t
h
806 x
t
h
860 x
t
h
line
V-sync Pulse Width
t
vw
2 x
t
h
6 x
t
h
–
line
V-sync Set up Time (to H-sync)
t
vsu
8 x
t
c
–
–
clock
V-sync Hold Time
t
vhd
(thbp+16) x
t
c
–
–
clock
Vertical Front Porch
t
vfp
1 x
t
h
3 x
t
h
–
line
Vertical Back Porch
t
vbp
2 x
t
h
29 x
t
h
–
line
Vertical Data Sync Period
t
vds
8 x
t
h
35 x
t
h
–
line
Vertical Display Time
t
vd
768 x
t
h
768 x
t
h
768 x
t
h
line
Clock Period
t
c
15.0
15.38
–
ns
tv
tvw
VSYNC
tvsu
tvhd
th
HSYNC
tv p
tvbp
tvd
tvds
DE
1023
1024
1
2
th
thw
HSYNC
thbp
thfp
thds
thd
DE
1024
pixel
CLK
2
3
4
1
ANDpSi121GA0S-HB-KIT