Sanyo LC74980W Specifications

Ordering number : ENN6450A

31000RM (OT) No. 6450-1/10

Overview

The LC74980W is an LCD TV scan converter IC that converts an NTSC TV signal to an XGA personal computer video signal. This IC, in conjunction with a digital decoder, a microcontroller, and an LCD panel, can easily form an LCD TV video signal-processing circuit system. Since the LC74980W performs resolution conversion without an external frame memory, it can reduce system costs. Since this IC also provides PAL TV signal input and DTV inputs (480p and 480i formats), it provides the functions required in the next generation of LCD TV sets.

Features

•

NTSC and PAL inputs: 8-bit digital YUV (CCIR 601) input

• DTV input: 8-bit digital YCbCr input

• Progressive-scan XGA RGB (6 bits per color, twophase) signal output

•

YUV to RGB conversion and YCbCr to RGB conversion

• Interlaced to progressive scan conversion

• Resolution conversion (enlargement)

• Variable display size and display position (independently settable in the horizontal and vertical directions)

• Image quality adjustments: brightness, contrast, color, sharpness, color phase, black balance, and white balance

• Built-in γ correction (programmable LUT technique)

• Dithering (8-bit to 6-bit conversion)

• Built-in OSD function (8 colors)

•I

C bus interface

• Constant frame-rate processing (identical frame periods in the input and output signals) adopted so that no external memory is required.

Specifications

• Supply voltage: 3.3 V (input pins are 5 V tolerant)

• Maximum operating frequency: 65.0 MHz

• Package: SQFP208

Applications

• LCD TVs, monitors, and projectors

• PDP displays

• Digital TV sets (both home and car products)

Package Dimensions

unit: mm

3210-SQFP208

LC74980W

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

LCD TV Scan Converter IC

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.

28.0

(3.2)

30.6

0.15

0.2

0.35

3.8max

0.5

30.6

(0.5)

(1.25)

28.0

156 105

208

104

157

SANYO: SQFP208

[LC74980W]

I/O Specifications

Input Specifications (Main input signals)

• Video signals TV: Two 8-bit digital YUV (CCIR 601) input systems.

The Y data is 8 bits, and the UV signal is an 8-bit point sequential multiplexed signal.

Note: NTSC and PAL signals are referred to simply as

TV signals in this document.

DTV: One 8-bit digital YCbCr (CCIR 601) input

system. Supports the 480i and 480p formats.

Note: This IC does not perform frame rate conversion.

Thus only frame rates that fall within the operating range of the LCD panel module used are supported as input frame rates.

• Synchronizing signals: Both horizontal and vertical synchronizing signal are input as two independent systems. They are switched internally. Any input polarity may be used. The IC detects the polarity internally.

• Blanking signal: Provides as either a component signal or as a composite signal.

• Input processing clock: Two clock systems are input independently. They are switched internally.

• Output processing clock: A fixed-frequency oscillator provides 65.0 MHz clock.

Output Specifications (Main output signals)

• Video signal: Two-phase XGA digital RGB signal with 6 bits per color. A single-phase output mode is also support, and can be selected by settings using the I

C bus. (Output is from

the ODD pin in this case.)

• Synchronizing signals: The period and polarity of both the horizontal and the vertical signals may be set. The synchronizing signal position is also variable. A composite synchronizing signal can also be output from the vertical output.

• Blanking signals: Horizontal and vertical blanking signals are provided. The periods and the polarities can be set. A composite blanking signal can also be output from the vertical output.

• Output processing clock: In XGA mode, 65.0 MHz (DCLK1) and 32.5 MHz

(DCLK2) clocks are output.

Control Specifications

• I

C bus: Used for setting internal registers and for

reading out status values. (SDA, SCL)

• Three-wire bus: Control bus used for OSD control and γ correction settings. (AIDA, AICK, AICS)

• External control output: EXCTR pin can be used for general-purpose control of circuits external to the IC over the I

C bus.

No. 6450-2/10

LC74980W

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

–0.3 to +4.6 V

Input voltage V

–0.5 to VIN+ 0.5 V

I/O voltages V

, V

–0.3 to VDD+ 0.3 V Storage temperature Tstg –55 to +125 °C Operating temperature Topr –30 to +70 °C

Electrical Characteristics

Absolute Maximum Ratings at VSS= 0 V

Parameter Symbol Conditions

Ratings

Unit

min typ max

Supply voltage V

3.0 3.3 3.6 V

Input voltage range V

0 — 5.5 V

Allowable Operating Ranges at Ta = –30 to +70°C

Parameter Symbol Conditions

Ratings

Unit

min typ max

Input pins C

f = 1 MHz ——10 pF

Output pins C

OUT

f = 1 MHz ——10 pF

Bidirectional pins C

I/O

f = 1 MHz ——10 pF

I/O Pin Capacitances at VDD= –VI= 0 V, Ta = 25°C

No. 6450-3/10

LC74980W

Parameter Symbol Conditions

Ratings

Unit

min typ max

Input high-level voltage V

CMOS level 0.7 V

——V

CMOS level Schmitt 0.75 V

——V

Input low-level voltage V

CMOS level ——0.2 V

IDD

CMOS level Schmitt ——0.15 V

IDD

Input high-level current I

VI= V

–10 — +10 µA

= VDD, with pull-down resistors attached. +10 — +100 µA

Input low-level current I

VI= V

–10 — +10 µA

Type B4, I

= –2 mA VDD– 0.8 ——V

Output high-level voltage V

Type B8, IOH= –4 mA VDD– 0.8 ——V Type B12, I

= –6 mA VDD– 0.8 ——V

Type B4, I

= 2 mA —— 0.4 V

Output low-level voltage V

Type B8, IOL= 4 mA —— 0.4 V Type B12, I

= 6 mA —— 0.4 V

Output leakage current I

In the high-impedance output state –10 — +10 µA

Pull-down resistance R

34.3 68.5 137 kΩ

Quiescent current* I

Outputs open, VI= VSSor V

——100 µA

DC Characteristics at Ta = –30 to +70°C, VDD= 3.0 to 3.6 V, V

IDD

= 3.0 to 5.5 V

*: Note that the rating cannot be always guaranteed due to the circuit structure such as a case where the circuit includes a pull-down resistor.

Pins

Pin Assignment

DVSS

OSDRIN

OSDGIN

OSDBIN

OSDEN

YIN7

YIN6

YIN5

YIN4

YIN3

YIN2

YIN1

YIN0

DVDD

DVSS

UIN7

UIN6

UIN5

UIN4

UIN3

UIN2

UIN1

UIN0

DVDD

DVSS

VIN7

VIN6

VIN5

VIN4

VIN3

VIN2

VIN1

VIN0

DVDD

DVSS

CLKITV

DVDD

DVSS

CLKIDTV

DVDD

DVSS

DVDD

SCANMOD

SCANEN

AVSS

PDO

AVDD

AVSS

VCOCNT

VCORNG

AVDD

DVDD

DCLK1B

DCLK1

DVSS

DVDD

BOODD5

BOODD4

BOODD3

BOODD2

BOODD1

BOODD0

DVSS

DVDD

GOODD5

GOODD4

GOODD3

GOODD2

GOODD1

GOODD0

DVSS

DVDD

ROODD5

ROODD4

ROODD3

ROODD2

ROODD1

ROODD0

DVSS

DVDD

BOEVEN5

BOEVEN4

BOEVEN3

BOEVEN2

BOEVEN1

BOEVEN0

DVSS

DVDD

GOEVEN5

GOEVEN4

GOEVEN3

GOEVEN2

GOEVEN1

GOEVEN0

DVSS

DVDD

ROEVEN5

ROEVEN4

ROEVEN3

ROEVEN2

ROEVEN1

ROEVEN0

DVSS

RIN7

RIN6

RIN5

RIN4

RIN3

RIN2

RIN1

RIN0

DVDD

DVSS

GIN7

GIN6

GIN5

GIN4

GIN3

GIN2

GIN1

GIN0

DVDD

DVSS

BIN7

BIN6

BIN5

BIN4

BIN3

BIN2

BIN1

BIN0

DVDD

DVSS

CLPP

CLPY

CLPCB

CLPCR

DVDD

DVSS

HITV

VITV

HIDTV

VIDTV

N.C

BLKIH

BLKIV

PLLH

DVDD

DVSS

RST

BLKHOUT

BLKVOUT

DVDD

TSTSUB0

TSTSUB1

TSTSUB2

TSTSUB3

TSTMOD0

TSTMOD1

TSTMOD2

TSTMOD3

TSTOB0

TSTOB1

TSTOB2

TSTOB3

TSTOB4

TSTOB5

TSTOB6

TSTOB7

DVSS

DVDD

TSTOA0

TSTOA1

TSTOA2

TSTOA3

TSTOA4

TSTOA5

TSTOA6

TSTOA7

DVSS

DVDD

CLKIO

PDOWN2

PDOWN1

SCL

SDA

AICK

AIDA

AICS

MUTE

EXCTR

DVSS

DVDD

XTAL

DVSS

DVDD

VIRST

VOUT

HOUT

DVSS

DVDD

DCLK2B

DCLK2

DVSS

104

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Top view

100

105110115120125130135140145150155

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A12972

LC74980W

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