參數(shù)資料
型號: LC74776
元件分類: 畫面疊加
英文描述: ON-SCREEN DISPLAY IC, PDIP30
封裝: SDIP-30
文件頁數(shù): 34/35頁
文件大?。?/td> 253K
代理商: LC74776
System Block Diagram
No. 6018-8/35
LC74776, 74776M
RAM
write
address
counter
Display
RAM
Deco-
der
Decoder
Font
ROM
Display
control
register
Shift
register
Character
output
control
Background
control
Video
output
control
Sync
signal
generator
Blinking
and
reverse
video
control
register
Vertical
display
position
register
Horizontal
display
position
register
Blinking
and
reverse
video
control
circuit
Vertical
dot
counter
Horizontal
dot
counter
Vertical
display
position
detector
Line
control
counter
Horizontal
display
position
detector
Character
control
counter
Vertical
size
counter
Horizontal
size
counter
Vertical
character
size
register
Horizontal
character
size
register
Output
control
Data
output
buffer
Data
slicer
circuit
AFC
circuit
8-bit
latch
+
command
decoder
Serial
to
parallel
converter
Sync
discrimina-
tion
Character
output
dot
clock
generator
Composite
sync
signal
separation
control
Sync
separator
data
separator
circuit
Timing
generator
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