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PDF LC74735NW Data sheet ( Hoja de datos )
| Número de pieza | LC74735NW | |
| Descripción | On-Screen Display Controller | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENN7545
CMOS IC
LC74735NW
On-Screen Display Controller
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)
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O1003TN (OT) No. 7545-1/52
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
LC74735NW
Continued from preceding page.
Pin No.
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Symbol
D11
D10
D9
D8
VSS1
VDD1
D7
D6
D5
D4
D3
D2
D1
D0
VSS3
VDD3
OE
CE
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
VSS3
VDD3
A7
A6
A5
A4
A3
A2
A1
A0
VSS3
VDD3
Type
Functional description
Data input 11
ROM data input 11. MORE+
Data input 10
ROM data input 10. MORE+
Data input 9
ROM data input 9. MORE+
Data input 8
ROM data input 8. MORE+
Ground
Connect a ground to this pin. (Digital system ground)
Power supply (+3.3 V)
Power supply: (+3.3 V: Digital system)
Data input 7
ROM data input 7. MORE+
Data input 6
ROM data input 6. MORE+
Data input 5
ROM data input 5. MORE+
Data input 4
ROM data input 4. MORE+
Data input 3
ROM data input 3. MORE+
Data input 2
ROM data input 2. MORE+
Data input 1
ROM data input 1. MORE+
Data input 0
ROM data input 0. MORE+
Ground
Connect a ground to this pin. (External ROM output system ground)
Power supply (+3.3 or +5.5 V) Power supply (External ROM output system power supply)
Output enable
ROM output enable output. This is an active low output.
Chip enable
ROM chip enable output. This is an active low output.
Address output 17
ROM address output 17
Address output 16
ROM address output 16
Address output 15
ROM address output 15
Address output 14
ROM address output 14
Address output 13
ROM address output 13
Address output 12
ROM address output 12
Address output 11
ROM address output 11
Address output 10
ROM address output 10
Address output 9
ROM address output 9
Address output 8
ROM address output 8
Ground
Connect a ground to this pin. (External ROM output system ground)
Power supply (+3.3 or +5.5 V) Power supply (External ROM output system power supply)
Address output 7
ROM address output 7
Address output 6
ROM address output 6
Address output 5
ROM address output 5
Address output 4
ROM address output 4
Address output 3
ROM address output 3
Address output 2
ROM address output 2
Address output 1
ROM address output 1
Address output 0
ROM address output 0
Ground
Connect a ground to this pin. (External ROM output system ground)
Power supply (+3.3 or +5.5 V) Power supply (External ROM output system power supply)
No. 7545-5/52
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
LC74735NW
Command 00 (Main screen write address set command)
• First byte
DA0 to 7 Register
7—
6—
5—
4—
3—
2—
1
V3
<MSB>
0 V2
State
1
0
0
0
0
0
0
1
0
1
Content
Function
Command 0 identification code
Main screen write address setting
Sub-identification code: 0
• Second byte
DA0 to 7 Register
7 V1
6
V0
<LSB>
5
H5
<MSB>
4 H4
3 H3
2 H2
1 H1
0
H0
<LSB>
State
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Content
Function
Main screen memory line address
(0 to E, hexadecimal)
QVGA mode: 13 lines
WVGA mode: 15 lines
Main screen memory character position address
(00 to 27, hexadecimal)
QVGA mode: 40 characters
WVGA mode: 33 characters
Notes
Notes
No. 7545-11/52
Datasheet pdf - http://www.DataSheet4U.net/
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| PDF Descargar | [ Datasheet LC74735NW.PDF ] | |
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