22
AVR-2105/885 / AVC-1890
LC74781 (IC1006)
Pin No.
Symbol
Name
1
VSS1
GND
2
Xtal IN
Xtal oscillation
3
Xtal OUT
Xtal oscillation
4
CTRL1
Xtal oscillation input switching
5
BLANK
Blank output
6
OSC IN
LC oscillation
7
OSC OUT
LC oscillation
8
CHARA
Character output
9
CS
Enable input
10
SCLK
Clock input
11
SIN
Data input
12
VDD2
Power
13
CV OUT
VIDEO signal output
14
NC
15
CV IN
VIDEO signal input
16
VDD1
Power
17
SYN IN
Sync. separate circuit input
18
SEP C
Sync. separate circuit bias voltage
19
SEP OUT
Complex sync. signal output
20
SEP IN
Vertical sync. signal input
21
CTRL2
NTSC/PAL-M switching input
22
CTRL3
SEP IN input control
23
RST
Reset input
24
VDD1
Power (+5V)
CS
9
SIN
11
SCLK
10
OSCIN
6
OSCOUT
7
SYNIN
17
SEPC
18
SEPOUT
19
SEPIN
20
CTRL3
22
4
CTRL1
XtalIN
XtalOUT
BLANK
CVIN
CVOUT
CTRL2
21
2
3
5
15
13
Serial
parallel
converter
8-bits
latch
+
command
decoder
Horizontal
character
size
register
Horizontal
size
counter
Horizontal
display
position
register
Horizontal
dot
counter
Vertical
display
position
register
Vertical
dot
counter
Blinking
and inversion
control
register
Blinking
and inversion
control
circuit
Blinking
and inversion
control
register
Blinking
and inversion
control
register
Character
control
counter
Line
control
counter
Timing generator
Synchronization
signal generator
Character output control
Background control
Video output control
Display
control
register
RAM
write
adress
counter
Display
RAM
Vertical
character
size
register
Vertical
size
counter
Decoder
Font
RAM
Shift
register
Decoder
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299