LC7442 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC7442

PIP Controller

SANYO -> Panasonic 

Ordering number : EN4412A

CMOS IC

LC7442, 7442E

PIP Controller

Overview

The LC7442 and LC7442E are memory controller for PIP

(picture-in-picture) systems for TV sets and VCRs. Since

this IC includes 3 built-in D/A converter circuits on chip,

a component-type PIP system can be constructed by

combining this product with memory and an A/D

converter such as the LC7480.

Features

• Horizontal resolution: 600 TV lines*1

• Three built-in D/A converter provided on-chip in the

PIP memory controller block

• High image quality display provided by vertical filter

function frame display*2

• Built-in even/odd field determination circuit

• Built-in PLL circuit (requires external LPF)

• Handles NTSC/PAL, TV/VCR, and multi-mode systems

(NTSC-PAL)*3

• Sub-screen specifications

— Display modes: 2-screen, 3-screen, and

4-screen*2

— Display on/off and frame on/off/color

switching, wipe function

— Supports switching between fixed (4 corners) and

arbitrary (8-bit specification of vertical and

horizontal position) display positions

— The size of the display area can be either variable or

1/9 of the main picture area, i.e 1/3 of the vertical

and 1/3 of the horizontal dimensions of the screen

— Horizontal resolution of about 250 dots (Y signal)

— Gradations (quantization): 64 (6 bits)

• Operating power supply voltage: 5 V ±10%

• Package: QIP64E, DIP64S

Notes 1.When aspect correction is not performed

D/A clock

Y 15.00 MHz

R-Y 3.75 MHz

B-Y 3.75 MHz

2. The specifications vary with the external memory as listed

in the table below.

Display Memory

256 k

1M

1 screen

∆

O

2 screens

×

O

3 screens

×

∆

4 screens

×

∆

Single-screen display consists of displaying only one

screen in 2-screen mode.

O: Both dynamic and static images can be frame

displayed

∆: Only dynamic images can be frame displayed

×: Not possible

3. Multi-mode is only supported when 1M of external memory

is provided.

4. See the separate “APPLICATION NOTE” document for

details.

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

51795TH (OT) / 73093JN No. 4412-1/22

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