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參數資料
| 型號： | LC74788N |
| 文件頁數： | 4/50頁 |
| 文件大小： | 175K |
| 代理商： | LC74788N |
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No. 7191-4/50
LC74735W
Pin Functions
Pin No.
Symbol
Type
Functional description
1
V
SS
1
OSCin
Ground
Digital system ground
2
LC oscillator
Connections for the character output dot clock generator oscillator coil and capacitor.
May also be used for external clock input.
3
OSCout
4
CTRL1
OSCin oscillator input control
Switches between external clock input mode and LC oscillator mode.
Low: LC oscillator, high: external clock input MORE+
5
SCLK
Clock input
Clock input for the serial data input system
MORE+ (This input has hysteresis characteristics.)
6
SIN
Data input
Serial data input
MORE+ (This input has hysteresis characteristics.)
7
CS
Enable input
Enable input for the serial data input system. Serial data input is enabled when this pin is low.
MORE+ (This input has hysteresis characteristics.)
8
VDD1
Power supply (+3.3 V)
Digital system power supply: +3.3 V
9
VSYNC
Vertical sync signal input
Vertical sync signal input
MORE+ (This input has hysteresis characteristics.)
10
VBLK
Vertical blanking signal input
Vertical blanking signal input
MORE+ (This input has hysteresis characteristics.)
11
HSYNC
Horizontal sync signal input
Horizontal sync signal input
MORE+ (This input has hysteresis characteristics.)
12
HBLK
Horizontal blanking signal input
Horizontal blanking signal input
MORE+ (This input has hysteresis characteristics.)
13
TEST1
Test mode control 1
Test mode control 1
Low: normal operation, high: test mode MORE+
14
TEST2
Test mode control 2
Test mode control 2
Low: normal operation, high: test mode (scan mode) MORE+
15
RST
Reset input
System reset input
MORE+ (This input has hysteresis characteristics.)
16
VSS1
Ground
Digital system ground
17
VDD1
Power supply (+3.3 V)
Digital system power supply: +3.3 V
18
CLKOUT
Clock output
Clock output
19
VSS1
Ground
Digital system ground
20
VDD1
Power supply (+3.3 V)
Digital system power supply: +3.3 V
21
RD2
Rout output: bit 2
Rout output
This is a 3-bit digital output with values from 000 to 111.
22
RD1
Rout output: bit 1
23
RD0
Rout output: bit 0
24
GD2
Gout output: bit 2
Gout output
This is a 3-bit digital output with values from 000 to 111.
25
GD1
Gout output: bit 1
26
GD0
Gout output: bit 0
27
BD2
Bout output: bit 2
Bout output
This is a 3-bit digital output with values from 000 to 111.
28
BD1
Bout output: bit 1
29
BD0
Bout output: bit 0
30
BLK
Blanking signal output
This signal indicates the OSD display period.
31
VSS1
Ground
Digital system ground
32
VDD2
Power supply (+3.3 V)
Analog system power supply: +3.3 V
Output. Connect a resistor Ro (67
) to this pin.
D/A converter (3 bits) output. Connect a resistor Ro (200
) to this pin.
D/A converter (3 bits) output. Connect a resistor Ro (200
) to this pin.
D/A converter (3 bits) output. Connect a resistor Ro (200
) to this pin.
33
Outr
outr output: analog
34
Rout
Rout output: analog
35
Gout
Gout output: analog
36
Bout
Bout output: analog
37
CCOMP
Phase correction capacitor connection
Capacitor connection: 1.5 μF
38
CVREF
Reference voltage output
Capacitor connection: 0.1 μF
Resistor connection: ro, 1540
D/A converter ground
39
RREF
Reference resistor connection
40
VSS2
Ground
Continued on next page.
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