Ordering number : ENN7545
O1003TN (OT) No. 7545-1/52
Overview
The LC74735NW is an on-screen display CMOS IC that
displays characters and patterns on a TV screen.
For QVGA display, the LC74735NW supports the use of
both a 12
18 dot character font and a 12
18 dot
graphics font with 16 colors with a total of 512 characters
and glyphs.
For WVGA display, the LC74735NW supports the use of
both a 24
32 dot character font and a 12
16 dot
graphics font with 16 colors with a total of 512 characters
and glyphs.
The LC74735NW can also implement extremely varied
displays by the use of an external ROM.
The LC74735NW supports both QVGA (480
234) and
WVGA (800
480).
Features
Screen structure
-- Main:
QVGA mode: 40 characters
13 lines (up to 520
characters) on a QVGA panel
WVGA mode: 33 characters
15 lines (up to 495
characters) on a WVGA panel
-- Wallpaper display screen: Permanent repetition of a
2
2 (horizontal
vertical) character pattern
Character structure
-- QVGA mode:
12 dots (horizontal)
18 dots (vertical): Character
display
12 dots (horizontal)
18 dots (vertical): Graphic
glyph display
-- WVGA mode:
24 dots (horizontal)
32 dots (vertical): Character
display
12 dots (horizontal)
16 dots (vertical): Graphic
glyph display (1 pixel: 2
2 dots)
-- Character display clock:
About 9 MHz -- QVGA with an LC oscillator
33.2 MHz (maximum: 40 MHz) WVGA with an
external clock signal input
*: The ROM image is known when QVGA or WVGA
mode is specified.
Number of characters: 512 (internal)
Up to 2048 characters when an external 16-bit 4M ROM
is used.
Character sizes: Four horizontal sizes (1
, 2
, 3
, and
4
)
Four vertical sizes (1
, 2
, 3
, and 4
)
(The character size is specified in line
units.)
Display start positions: 512 positions in the horizontal
direction and 256 positions in the vertical direction.
QVGA mode
WVGA mode
Setting units: Horizontal: 1 dot
2 dots (In
screen units)
Vertical:
1 dot
2 dots (In
screen units)
Display functions
-- Blinking specification (in character units)
Period: 1/64, 1/32, and 1/16 of the vertical sync
signal (in screen units)
Duty: Fixed at 50%
-- Box (raised or recessed) display
Raised/recessed specification (in character units)
Left: Off/on specification (in character units)
Right: Off/on specification (in character units)
Top: Off/on specification (in character units)
Bottom: Off/on specification (in character units)
LC74735NW
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
On-Screen Display Controller
CMOS IC
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
-- Border specification (in line units): Only valid with
glyphs from the character font.
Color specification
Character
-- Character color (in character units): 1 of 16 colors
can be specified.
-- Character background color (in character units): 1 of
16 colors can be specified.
-- Border color (in line units): 1 of 16 colors can be
specified.
Graphic
-- 16 types can be specified by ROM data
Box color (line units) : 1/16 colors
Background color (screen units) : 1/16 colors
Color table (palette)
-- Sixteen colors can be selected from a set of 512
colors (One of which is specified to be transparent.)
-- Number of color tables: 2. This allows up to 32
colors to be displayed at the same time.
Wallpaper screen (Graphics glyphs only)
Wallpaper display: Repeated display under the main
screen (2 characters horizontally by 2 characters
vertically).
Sprite character display: Displayed above the main
screen (2 characters horizontally by 2 characters
vertically)
Output
-- QVGA
Analog RGB output
BLK (OSD display period signal)
-- WVGA
Digital RGB output (3 bits per color)
BLK (OSD display period signal)
Package: SQFP80
Voltage: 3.3 V
Package Dimensions
unit: mm
3220-SQFP80
No. 7545-2/52
LC74735NW
14.0
12.0
1.25
1.25
0.5
14.0
12.0
1.25
1.25
0.5
1
20
21
40
41
60
61
80
0.1
0.5
1.6max
1.4
0.5
0.2
0.135
SANYO: SQFP80
[LC74735NW]
No. 7545-3/52
LC74735NW
Pin Assignments
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
A16
A17
CE
OE
VDD3
VSS3
D0
D1
D2
D3
D4
D5
D6
D7
VDD1
VSS1
D8
D9
D10
D11
Top view
VSS1
OSCin
OSCout
CTRL1
SCLK
SIN
CS
VDD1
VSYNC
VBLK
HSYNC
HBLK
TEST1
TEST2
RST
VSS1
VDD1
CLKOUT
VSS1
VDD1
VSS2
RREF
CVREF
CCOMP
BOUT
GOUT
ROUT
OUTR
VDD2
VSS1
BLK
BD0
BD1
BD2
GD0
GD1
GD2
RD0
RD1
RD2
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
VDD3
VSS3
A0
A1
A2
A3
A4
A5
A6
A7
VDD3
VSS3
A8
A9
A10
A11
A12
A13
A14
A15
No. 7545-4/52
LC74735NW
Pin Functions
Pin No.
Symbol
Type
Functional description
1
V
SS
1
Ground
Connect a ground to this pin. (Digital system ground)
2
OSCin
LC oscillator
Connect to the character output dot clock generator oscillator coil and capacitor.
3
OSCout
May also be used for external clock input.
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 set low.
MORE+ (This input has hysteresis characteristics.)
8
V
DD
1
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
V
SS
1
Ground
Connect a ground to this pin. (Digital system ground)
17
V
DD
1
Power supply (+3.3 V)
Power supply: (+3.3 V: Digital system)
18
CLKOUT
Clock output
Clock output
19
V
SS
1
Ground
Connect a ground to this pin. (Digital system ground)
20
V
DD
1
Power supply (+3.3 V)
Power supply: (+3.3 V: Digital system)
21
RD2
Rout output: bit 2
Rout output
22
RD1
Rout output: bit 1
This is a 3-bit digital output with values from 000 to 111.
23
RD0
Rout output: bit 0
24
GD2
Gout output: bit 2
Gout output
25
GD1
Gout output: bit 1
This is a 3-bit digital output with values from 000 to 111.
26
GD0
Gout output: bit 0
27
BD2
Bout output: bit 2
Bout output
28
BD1
Bout output: bit 1
This is a 3-bit digital output with values from 000 to 111.
29
BD0
Bout output: bit 0
30
BLK
Blanking signal output
This signal indicates the OSD display period.
31
V
SS
1
Ground
Connect a ground to this pin. (Digital system ground)
32
V
DD
2
Power supply (+3.3 V)
Power supply: (+3.3 V: D/A converter)
33
OUTR
Outr output: analog
Output. Connect a resistor Ro (68
) to this pin.
34
Rout
Rout output: analog
D/A converter (3 bits) output. Connect a resistor Ro to this pin.
35
Gout
Gout output: analog
D/A converter (3 bits) output. Connect a resistor Ro to this pin.
36
Bout
Bout output: analog
D/A converter (3 bits) output. Connect a resistor Ro to this pin.
37
CCOMP
Phase correction capacitor connection Capacitor connection: 1.5 F
38
CVREF
Reference voltage output
Capacitor connection: 0.1 F
39
RREF
Reference resistor connection
Connect a reference register to this pin.
40
V
SS
2
Ground
Connect a ground to this pin. (D/A converter ground)
Continued on next page.
No. 7545-5/52
LC74735NW
Continued from preceding page.
Pin No.
Symbol
Type
Functional description
41
D11
Data input 11
ROM data input 11. MORE+
42
D10
Data input 10
ROM data input 10. MORE+
43
D9
Data input 9
ROM data input 9. MORE+
44
D8
Data input 8
ROM data input 8. MORE+
45
V
SS
1
Ground
Connect a ground to this pin. (Digital system ground)
46
V
DD
1
Power supply (+3.3 V)
Power supply: (+3.3 V: Digital system)
47
D7
Data input 7
ROM data input 7. MORE+
48
D6
Data input 6
ROM data input 6. MORE+
49
D5
Data input 5
ROM data input 5. MORE+
50
D4
Data input 4
ROM data input 4. MORE+
51
D3
Data input 3
ROM data input 3. MORE+
52
D2
Data input 2
ROM data input 2. MORE+
53
D1
Data input 1
ROM data input 1. MORE+
54
D0
Data input 0
ROM data input 0. MORE+
55
V
SS
3
Ground
Connect a ground to this pin. (External ROM output system ground)
56
V
DD
3
Power supply (+3.3 or +5.5 V)
Power supply (External ROM output system power supply)
57
OE
Output enable
ROM output enable output. This is an active low output.
58
CE
Chip enable
ROM chip enable output. This is an active low output.
59
A17
Address output 17
ROM address output 17
60
A16
Address output 16
ROM address output 16
61
A15
Address output 15
ROM address output 15
62
A14
Address output 14
ROM address output 14
63
A13
Address output 13
ROM address output 13
64
A12
Address output 12
ROM address output 12
65
A11
Address output 11
ROM address output 11
66
A10
Address output 10
ROM address output 10
67
A9
Address output 9
ROM address output 9
68
A8
Address output 8
ROM address output 8
69
V
SS
3
Ground
Connect a ground to this pin. (External ROM output system ground)
70
V
DD
3
Power supply (+3.3 or +5.5 V)
Power supply (External ROM output system power supply)
71
A7
Address output 7
ROM address output 7
72
A6
Address output 6
ROM address output 6
73
A5
Address output 5
ROM address output 5
74
A4
Address output 4
ROM address output 4
75
A3
Address output 3
ROM address output 3
76
A2
Address output 2
ROM address output 2
77
A1
Address output 1
ROM address output 1
78
A0
Address output 0
ROM address output 0
79
V
SS
3
Ground
Connect a ground to this pin. (External ROM output system ground)
80
V
DD
3
Power supply (+3.3 or +5.5 V)
Power supply (External ROM output system power supply)
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