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PDF LC74731 Data sheet ( Hoja de datos )

Número de pieza LC74731
Descripción On-Screen Display Controller
Fabricantes Sanyo Semicon Device 
Logotipo Sanyo Semicon Device Logotipo



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No Preview Available ! LC74731 Hoja de datos, Descripción, Manual

Ordering number : ENN*6526
CMOS IC
LC74731W,74732W
On-Screen Display Controller
Preliminary
Overview
The LC74731W and LC74732W are on-screen display
CMOS ICs that display characters and patterns on a TV
screen under the control of a microcontroller. These ICs
display 16 × 16-dot characters and up to 12 lines of text
with 24 characters per line.
Features
• Text structure: 12 lines × 24 characters (Up to 288
characters)
• Character format: 16 × 16 dots
Character display clock frequency: about 9 MHz
• Character sizes: Four sizes each in the horizontal and
vertical directions with the size set in line units.
• Number of characters supported:
LC74731W:256 (internal)
LC74732W:512 (internal)
Up to 8192 using an external ROM (for Japanese)
[Reference] JIS X0298 (1990): 6877 characters
JIS level 1 kanji: 2965 characters
JIS level 2 kanji: 3388 characters
Special characters: 524 characters
• Display start positions: 128 positions each in the
horizontal and vertical directions
• Blinking, reverse video, reversed blinking, and character
outlining: May be specified in individual character units.
• Blinking types: Two types with periods of about 1.0 and
about 0.5 seconds.
• Blanking: The whole font area (16 ×16 dots) can be
blanked in line units
(Four types: no blanking, character size blanking,
character plus outlining size blanking, and whole area up
to adjacent character blanking)
• Line spacing control: Zero to seven scan lines, in line
units
• Character color: Eight colors in character units (in
internal synchronization mode): 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and
white)
• Character background color: Eight colors (in internal
synchronization mode): 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and
transparent)
• Screen background color: Eight colors (in internal
synchronization mode): 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and
white)
• External control inputs: Serial interface with an 8-bit
data size.
• Built-in sync separator circuit
• Video outputs: NTSC, PAL, PALM, PALN, NTSC
4.43, and PAL 60 composite video signal outputs
• Supports Y/C input
Package Dimensions
[LC74731W,74732W]
12.0
10.0
1.25
0.5 0.18
1.25
48
49
33
32
0.15
64
1
17
16
0.5 0.5
SANYO: SQFP64
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
63000RM (OT) No. 6526-1/38

1 page




LC74731 pdf
LC74731W,74732W
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Input voltage
Output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
Conditions
VDD
VIN
VOUT
Pdmax
Topr
Tstg
VDD1 and VDD2
All input pins
SYNCJDG, BLANK, CHARA, SEPOUT, A0 to A17,
CE, and OE
Ratings
min max
VSS – 0.3
VSS – 0.3
VSS + 6.5
VDD1 + 0.3
VSS – 0.3
VDD1 + 0.3
— 275
–30 +70
–40 +125
Unit
V
V
V
mW
°C
°C
Recommended Operating Conditions
Parameter
Symbol
Conditions
Ratings
min typ
Supply voltage
Supply voltage
[Only for RGB output]
High-level input voltage
Low-level input voltage
Pull-up resistor
VDD1
VDD2
VDD1
VDD2
VIH1
VIH2
VIH3
VIH4
VIL1
VIL2
VIL3
RPU
VDD1
VDD2
VDD1
VDD2
CS, SIN, SCLK, SEPIN, and MUTE
RST
CTRL1 and OUTMOD
D0 to D7
RST, CS, SIN, SCLK, SEPIN, and MUTE
CTRL1 and OUTMOD
D0 to D7
RST, CS, SIN, SCLK, and MUTE (when the pull-up
resistor option is specified)
4.5
4.5
2.7
2.7
0.8 VDD1
0.8 VDD1
0.7 VDD1
0.8 VDD1
VSS – 0.3
VSS – 0.3
VSS – 0.3
25
5.0
5.0
5.0
5.0
50
Composite video signal input
voltage
Input voltage
VIN1
VIN2
VIN3
CVIN and CVCR
SYNIN
XtalIN (when an external clock input is used)
fin = 2 fsc, 4 fsc
VDD1 = 5 V
VDD1 = 5 V
VDD1 = 5 V
— 2.0
1.5 2.0
——
The XtalIN and XtalOUT oscillator pins (2 fsc: NTSC)
7.159
Oscillator frequency
The XtalIN and XtalOUT oscillator pins (4 fsc: NTSC)
FOSC1 The XtalIN and XtalOUT oscillator pins (2 fsc: PAL)
14.318
— 8.867
The XtalIN and XtalOUT oscillator pins (4 fsc: PAL)
— 17.734
FOSC2 The OSCin and OSCout oscillator pins (LC oscillator)
— 10
Note: If the Xtalin pin is used in clock input mode, applications must take adequate input noise prevention and reduction measures.
max
5.5
6.5
5.5
6.5
5.5
VDD1 + 0.3
VDD1 + 0.3
5.5
0.2 VDD1
0.3 VDD1
0.2 VDD1
Unit
V
V
V
V
V
V
V
V
V
V
V
90 k
— Vp-p
2.5 Vp-p
5.0 Vp-p
MHz
MHz
— MHz
— MHz
— MHz
No. 6526-5/38

5 Page





LC74731 arduino
LC74731W,74732W
COMMAND0 (Display memory write address setup command)
• First byte
DA0 to 7
7
6
5
4
3
Register
V3
2 V2
1 V1
0 V0
State
1
0
0
0
0
1
0
1
0
1
0
1
Content
Function
Command 0 identification code
Display memory write address setup
Display memory line address (0 to B (hexadecimal))
• Second byte
DA0 to 7 Register
State
Content
Function
7 — 0 Second byte identification code
6 —0
5 —0
0 Display memory line address (0 to 17 (hexadecimal))
4 H4
1
0
3 H3
1
0
2 H2
1
0
1 H1
1
0
0 H0
1
Note that all registers are set to 0 when these ICs are reset by the RST pin.
Notes
Notes
No. 6526-11/38

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