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參數資料
型號: LC74799
元件分類: 畫面疊加
英文描述: ON-SCREEN DISPLAY IC, PDIP30
封裝: 0.400 INCH, SDIP-30
文件頁數: 28/32頁
文件大小: 322K
代理商: LC74799
No. 5834-5/32
LC74799, 74799M
Continued from preceding page.
Notes: (1): When the sync level = 0.8 V
(2): When the sync level = 1.0 V
(3): When the sync level = 1.4 V
The values in parentheses for the background high and low levels are for blue background mode.
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
CVOUT :VDD1 = 5.0 V,
(1)
1.67
V
Color burst high level
VCBH
VDD2 = 5.0 V
(2)
1.87
V
(3)
2.27
V
CVOUT :VDD1 = 5.0 V,
(1)
1.23 (1.16)
V
Background color low level
VRSH
VDD2 = 5.0 V
(2)
1.43 (1.36)
V
(3)
1.83 (1.76)
V
CVOUT :VDD1 = 5.0 V,
(1)
2.37 (2.01)
V
Background color high level
VRSL
VDD2 = 5.0 V
(2)
2.57 (2.21)
V
(3)
2.97 (2.61)
V
CVOUT :VDD1 = 5.0 V,
(1)
1.50
V
Frame level 0
VBK0
VDD2 = 5.0 V
(2)
1.70
V
(3)
2.10
V
CVOUT :VDD1 = 5.0 V,
(1)
2.08
V
Frame level 1
VBK1
VDD2 = 5.0 V
(2)
2.28
V
(3)
2.68
V
CVOUT :VDD1 = 5.0 V,
(1)
2.65
V
Character level
VCHA
VDD2 = 5.0 V
(2)
2.85
V
(3)
3.25
V
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
OSD write (See figure 1.)
Minimum input pulse width
tW (SCLK)
SCLK1
200
ns
tW (CS1)
CS1 (The period when CS1 is high)
1
s
Data setup time
tSU (CS1)
CS1
200
ns
tSU (SIN)
SIN1
200
ns
Data hold time
th (CS1)
CS1
2
s
th (SIN)
SIN1
200
ns
One word write time
tword
The 8-bit data write time
4.2
s
twt
The RAM data write time
1
s
PDC/VPS write and read (I2C bus timing)
SCL frequency
tSCL
100
kHz
Bus release time
tBUF
4.7
s
Start hold time
tHD ; STA
4.0
s
SCL low-level period
tLOW
4.7
s
SCL high-level period
tHIGH
4.0
s
Data hold time
tHD ; DAT
0s
Data setup time
tSU ; DAT
250
ns
Rise time
tR
1000
ns
Fall time
tF
300
ns
Stop setup time
tSU ; STO
4.0
s
Timing Characteristics at Ta = –30 to +70°C, VDD1 = 5 ±0.5 V
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