參數(shù)資料
型號: W78CE354
廠商: WINBOND ELECTRONICS CORP
英文描述: MONITOR MICROCONTROLLER
中文描述: 顯示器單片機
文件頁數(shù): 35/44頁
文件大?。?/td> 426K
代理商: W78CE354
W78C354
Publication Release Date: October 1996
- 35 -
Revision A1
Hsync
Hsync
(a) Negative polarity Hsync
(b) Postive polarity Hsync
(Leading-edge)
(Trailing-edge)
P1.4
P1.4
(Leading-edge)
(Trailing-edge)
P1.4
P1.4
Figure 14. Pin P1.4 outputs the H-clamp pulse at the leading edge or trailing edge of Hsync.
2. Pulse width of H-clamp pulse:
Select the weighting of H-clamp pulse by programming bits HCWS0 and HCWS1 in CONTREG1
Pulse width of H-clamp output: [(1/F
CLOCK
)
×
Weighting]
±
[ 1/(2
×
F
CLOCK
)]
(HCWS1, HCWS0)
WEIGHTING
16 MHz
18.432 MHz
20 MHz
(0, 0)
4.5
281
±
31 nS
531
±
31 nS
1031
±
31 nS
2031
±
31 nS
244
±
27 nS
461
±
27 nS
896
±
27 nS
1764
±
27 nS
225
±
25 nS
425
±
25 nS
825
±
25 nS
1625
±
25 nS
(0, 1)
8.5
(1, 0)
16.5
(1, 1)
32.5
Hsync
H-clamp
output
Figure 15. Pulse width of H-clamp output
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