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LC74731W の電気的特性と機能

LC74731WのメーカーはON Semiconductorです、この部品の機能は「On-Screen Display Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 LC74731W
部品説明 On-Screen Display Controller
メーカ ON Semiconductor
ロゴ ON Semiconductor ロゴ 




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LC74731W Datasheet, LC74731W PDF,ピン配置, 機能
LC74731W
LC74732W
CMOS LSI
On-Screen Display Controller
www.onsemi.com
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
SPQFP64 10x10 / SQFP64
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
ORDERING INFORMATION
See detailed ordering and shipping information on page 39 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
March 2015 - Rev. 1
1
Publication Order Number :
LC74731W_32W/D

1 Page





LC74731W pdf, ピン配列
LC74731W, LC74732W
Pin Functions
Pin No.
Pin
Function
Description
1
VSS1
Ground
Ground connection. (Digital system ground)
2
3
Xtalin
Xtalout
Crystal oscillator connections
Connections for the crystal element and capacitors that form the internal sync signal generating
crystal oscillator. Xtalin can also be used to input an external clock signal. (2fsc or 4fsc)
Switches the crystal oscillator Selects external clock input mode or crystal oscillator mode. Low: crystal oscillator mode, high:
4 CTRL1 input
external clock input mode.
5 OSCin
LC oscillator connections
Connections for the coil and capacitor that form the character output dot clock generation oscillator.
6 OSCout
7 MUTE Muting control input
This is an active-low input with hysteresis characteristics (MORE+).
When low, the
CVout, Yout, and Cout outputs are set to either,
(1) CSYNC, CSYNC, PE, or
(2) PE
PE,
PE.
In the initial state, (1) is selected. This setting is switched by commands.
Background color phase
8
CDLR
adjustment
Connection for the resistor used to adjust the background color phase
Outputs the result of the judgment as to whether or not the external sync signal is present.
SYNCJDG External sync signal judgment A high level is output when a sync signal is present.
9
/Rout
output (Rout output)
The dot clock (LC oscillator) is output when RST is low.
(The IC can be set up to not output this signal during resets by commands.)
Character output
10 CHARA/Gout (Gout output)
Character signal output
11 BLANK/Bout Blank output (Bout output) Blank signal output pin
Internal/external output
12 IEout/BLKout (BLKout output)
Internal synchronization (high)/external synchronization (low) state output pin
13 OUTMOD Output switching input
Switches between output from pins 9 to 12 and input to pin 32.
Low: normal operation, high: RGB output supported
14 CS Enable input
Serial data input enable
Serial data input is enabled when low.
more+ (Hysteresis input characteristics)
15 SIN Data input
Serial data input
more+ (Hysteresis input characteristics)
16 SCLK Clock input
Serial data input clock input
more+ (Hysteresis input characteristics)
17
VDD2
Power supply
Composite video signal level adjustment power supply. (Analog system power supply)
18 COUT Color signal output
Color (C) signal output
19 NC
This pin must either be left open or connected to ground.
20 CIN Color signal input
Color (C) signal input
21
CBIAS Chrominance bias output
Chrominance signal bias level output
22 NC
This pin must be either left open or connected to ground.
23 YOUT Luminance signal output Luminance signal (Y) output
24 NC
This pin must be either left open or connected to ground.
25 YIN Luminance signal input Luminance signal (Y) input
26
VSS2
Ground
27 CVOUT Video signal output
Ground
Composite video signal output
28 NC
This pin must either be left open or connected to ground.
29
CVIN
Video signal input
Composite video signal input
30 CVCR Video signal input
SECAM chrominance signal input
31 HFTin Halftone signal input
Halftone signal input
32 SYNin Sync separator circuit input Video signal input to the internal sync separator circuit
33 SEPout Composite sync signal output Composite sync signal output from the internal sync separator circuit
Vertical sync signal input
34
SEPin Vertical sync signal input
MORE+ (Hysteresis input characteristics)
35
RST
Reset input
System reset input
A built-in pull-up resistor can be included in this pin’s input circuit. (Hysteresis input characteristics)
36
VDD1
Power supply (+5 V)
Power supply (+5 V: digital system power supply)
Continued on next page.
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3Pages


LC74731W 電子部品, 半導体
LC74731W, LC74732W
Electrical Characteristics at Ta = –30 to +70°C, VDD1 = 5 V unless otherwise specified.
Parameter
Input off leakage current
Output off leakage current
High-level output voltage
Low-level output voltage
Input current
Operating current drain
Symbol
Pin
Conditions
Ileak1
Ileak2
VOH11
VOH12
VOH21
VOH22
VOL11
VOL12
VOL21
VOL22
IIH
IIL
IDD1
IDD2
CVIN, CVCR, CIN, and YIN
CVOUT, COUT, and YOUT
SYNCJDG, SETPOUT,
BLANK, CHARA, and IEOUT
SYNCJDG, SETPOUT,
BLANK, CHARA, and IEOUT
A0 to A17, OE, and CE
A0 to A17, OE, and CE
SYNCJDG, SEPOUT,
BLANK, CHARA, and IEOUT
SYNCJDG, SEPOUT,
BLANK, CHARA, and IEOUT
A0 to A17, OE, and CE
A0 to A17, OE, and CE
RST, CS, SIN, SCLK, CTRL1,
MUTE, and OUTMOD
CS, SIN, SCLK, CTRL1, and
OUTMOD
VDD1
VDD2
VDD1 = 5.5 to 4.5 V
IOH = –1.0 mA
VDD1 = 4.4 to 2.7 V
IOH = –0.5 mA
VDD1 = 5.5 to 4.5 V
IOH = –1.0 mA
VDD1 = 4.4 to 2.7 V
IOH = –0.5 mA
VDD1 = 5.5 to 4.5 V
IOL = 1.0 mA
VDD1 = 4.4 to 2.7 V
IOL = 0.5 mA
VDD1 = 5.5 to 4.5 V
IOL = 1.0 mA
VDD1 = 4.4 to 2.7 V
IOL = 0.5 mA
VIN = VDD1
VIN = VSS1
All outputs: open
Xtal: 17.734 MHz
LC: 10 MHz
VDD2 = 5 V
min
0.9 VDD1
Ratings
typ
max
1
1
Unit
µA
µA
V
0.9 VDD1 — — V
0.9 VDD1 — — V
0.9 VDD1 — — V
— 0.1 VDD1
V
— 0.1 VDD1
V
— 0.1 VDD1
V
— 0.1 VDD1
V
——
1 µA
–1 — — µA
— — 40 mA
20 mA
Continued on next page.
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6 Page



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共有リンク

Link :


部品番号部品説明メーカ
LC74731

On-Screen Display Controller

Sanyo Semicon Device
Sanyo Semicon Device
LC74731W

On-Screen Display Controller

Sanyo Semicon Device
Sanyo Semicon Device
LC74731W

On-Screen Display Controller

ON Semiconductor
ON Semiconductor


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