參數(shù)資料
型號(hào): LC74794
廠商: Sanyo Electric Co.,Ltd.
英文描述: On-Screen Display Controller LSI(用于屏幕顯示控制器規(guī)模集成電路(LSI))
中文描述: 屏幕顯示控制器芯片(用于屏幕顯示控制器規(guī)模集成電路(LSI)的)
文件頁數(shù): 5/30頁
文件大?。?/td> 217K
代理商: LC74794
No. 5557-5/30
LC74794, 74794M
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
CV
OUT
; V
DD
1 = 5.0 V
V
DD
2 = 5.0 V
1.67
V
Color burst high level
V
CBH
1.87
V
2.17
V
CV
OUT
; V
DD
1 = 5.0 V
V
DD
2 = 5.0 V
1.23 (1.16)
V
Background color low level
V
RSL
1.43 (1.36)
V
1.73 (1.66)
V
CV
OUT
; V
DD
1 = 5.0 V
V
DD
2 = 5.0 V
2.37 (2.01)
V
Background color high level
V
RSH
2.57 (2.21)
V
2.87 (2.51)
V
CV
OUT
; V
DD
1 = 5.0 V
V
DD
2 = 5.0 V
1.50
V
Frame level 0
V
BK
0
1.70
V
2.00
V
CV
OUT
; V
DD
1 = 5.0 V
V
DD
2 = 5.0 V
2.08
V
Frame level 1
V
BK
1
2.28
V
2.58
V
CV
OUT
; V
DD
1 = 5.0 V
V
DD
2 = 5.0 V
2.65
V
Character level
V
CHA
2.85
V
3.15
V
Continued from preceding page.
Notes:
When the sync level is 0.8 V.
When the sync level is 1.0 V.
When the sync level is 1.3 V.
The values in parentheses for the background color high and low levels are the values for a blue background.
Note: Timings follow those for OSD write when the CMOS output circuit is used.
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Minimum input pulse width
t
W(SCLK)
t
W(CS1)
t
SU(CS1)
t
SU(SIN)
t
h(CS1)
t
h(SIN)
t
word
t
wt
SCLK1
200
ns
CS1 (The period when CS1 is high)
1
μs
Data setup time
CS1
200
ns
SIN1
200
ns
Data hold time
CS1
2
μs
SIN1
200
ns
One word write time
The time to write 8 bits of data
4.2
μs
The RAM data write time
1
μs
Timing Characteristics
at Ta = –30 to +70°C, V
DD
1 = 5 ± 0.5 V
OSD write (See Figure 1.)
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
t
CKCY
t
CKL
t
CKH
t
ICK
t
CKO
SCLK2
2
μs
Minimum input pulse width
SCLK2
1
μs
SCLK2
1
μs
Setup time
SCLK2
10
μs
Output delay time
DOUT
0.5
μs
PDC/VPS reads (For the n-channel open-drain output circuit. See Figure 2.)
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