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PDF LC74775M Data sheet ( Hoja de datos )
| Número de pieza | LC74775M | |
| Descripción | On-Screen Display Controller IC | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : EN*5919
CMOS IC
LC74775, 74775M
On-Screen Display Controller IC
Preliminary
Overview
The LC74775/M is an on-screen display controller CMOS
IC that displays characters and patterns on the TV screen
under microprocessor control. This IC includes a built-in
PDC/VPS/UDT interface circuit.
Package Dimensions
unit: mm
3196-DIP30SD
[LC74775]
Functions
• Display format: 24 characters by 12 rows (Up to 288
characters)
• Character format: 12 (horizontal) × 18 (vertical) dots
• Character sizes: Three sizes each in the horizontal and
vertical directions
• Characters in font: 128 (Of the 128 characters, one is a
space character (7E hexadecimal)
and one is a transparent space
character (7F hexadecimal))
• Initial display positions: 64 horizontal positions and 64
vertical positions
• Blinking: Specifiable in character units
• Blinking types: Two periods supported:
1.0 second and 0.5 second
• Blanking: Over the whole font (12 × 18 dots)
• Background color: 8 colors (internal synchronization
mode): 4fSC and 2fSC
Blue background only: NTSC
• Line background color: Three lines can be set up.
8 line background colors (in
internal synchronization mode):
4fSC and 2fSC
• External control input: 8-bit serial input format
• On-chip sync separator circuit
• Video outputs: PAL and NTSC format composite video
outputs
• On-chip PDC/VPS/UDT interface circuit supporting I2C
• Package: DIP30SD
MFP30S
unit: mm
3216A-MFP30S
SANYO: DIP30SD
[LC74775M]
SANYO: MFP30S
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 Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
N1198RM(OT) No. 5919-1/35
1 page  
LC74775, 74775M
Continued from preceding page.
Paremeter
Symbol
Conditions
Color burst low level
VCBL
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Color burst high level
VCBH
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Background color
(other than blue) low level
VRSL0
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Background color
(other than blue) high level
VRSH0
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Blue background color 1
low level
VRSL1
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Blue background color 2
low level
VRSL2
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Blue background color 1
and 2 high level
VRSH
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Frame level 0
VBK0
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Frame level 1
VBK1
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
Character level
VCHA
CVOUT: VDD1 = 5.0V,
VDD2 = 5.0V
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 blue background color (1 or 2) is set as an option.
Ratings
min typ max
Unit
(1)
1.07
V
(2)
1.27
V
(3)
1.67
V
(1)
1.67
V
(2)
1.87
V
(3)
2.27
V
(1)
1.23
V
(2)
1.43
V
(3)
1.83
V
(1)
2.37
V
(2)
2.57
V
(3)
2.97
V
(1)
1.16
V
(2)
1.36
V
(3)
1.76
V
(1)
1.52
V
(2)
1.72
V
(3)
2.12
V
(1)
2.01
V
(2)
2.21
V
(3)
2.61
V
(1)
1.50
V
(2)
1.70
V
(3)
2.10
V
(1)
2.08
V
(2)
2.28
V
(3)
2.68
V
(1)
2.65
V
(2)
2.85
V
(3)
3.25
V
No. 5919-5/35
5 Page 
LC74775, 74775M
• Second byte
DA 0 to 7
7
6
5
4
3
2
1
0
Register
at
c6
c5
c4
c3
c2
c1
c0
State
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Contents
Function
Character attribute off
Character attribute on
Character code (00 to 7F hexadecimal)
(7EHEX: Space character)
(7FHEX: Transparent space character)
Note: All registers are set to 0 when the LC74775/M is reset by the RST pin.
Notes
COMMAND2: Vertical display start position and vertical character size setup command
• First byte
DA 0 to 7
7
6
5
4
3
2
1
0
Register
–
–
–
–
VS21
VS20
VS11
VS10
State
1
0
1
0
0
1
0
1
0
1
0
1
Contents
Function
Command 2 identification code.
Vertical display start position and the vertical character
size setup.
VS20
VS21
0
1
VS10
VS11
0
1
0
1H/dot
3H/dot
0
1H/dot
3H/dot
1
2H/dot
1H/dot
1
2H/dot
1H/dot
Notes
Second line vertical character size
First line vertical character size
• Second byte
DA 0 to 7
Register
State
Contents
Function
7 – 0 Second byte identification bit
0 Crystal oscillator frequency: 2fsc
6 FS
1 Crystal oscillator frequency: 4fsc
VP5 0 If VS is the vertical display start position then:
55
(MSB)
1 VS = α +H × 2 ∑ 2n VPn
n=0
4 VP4 0 H: The horizontal synchronization pulse period
1 α = 20H (525H systems)
0 α = 25H (625H systems)
3 VP3
1
0
2 VP2
1
0
1 VP1
1
Character display area
VP0 0
0
(LSB)
1
Note: All registers are set to 0 when the LC74775/M is reset by the RST pin.
Notes
The vertical display start position is set by the
6 bits VP0 to VP5.
The weight of bit 1 is 2H.
No. 5919-11/35
11 Page | ||
| Páginas | Total 35 Páginas | |
| PDF Descargar | [ Datasheet LC74775M.PDF ] | |
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