LC74411中文資料三洋數(shù)據(jù)手冊(cè)PDF規(guī)格書

Overview

The LC74411N and LC74411NE are digital processing controllers for PIP (picture-in-picture) systems in TV sets

and VCRs. These ICs incorporate three circuits, a multiplexed A/D converter, field memory, and a D/A converter, to implement the PIP digital processing block in a single chip.

Features

? Horizontal resolution: 450 pixels*

? Single-chip implementation of the three circuits required in a PIP digital processing block: A/D converter, field memory, and D/A converter circuits

? High image quality provided by vertical filtering

? I2C bus adopted

? Built-in PLL circuit (requires an external low-pass filter)

? Supports NTSC and PAL, TV and VCR applications, and multi-format (NTSC and PAL) applications.

? External control function

? 8-bit D/A converter (PWM type): 6 pins

? General-purpose ports: 8 pins

? Sub-screen specifications

? Display on/off, frame/no frame, frame color switching, wipe function

? Display position - Specifiable as an 8-bit value for each of the horizontal and vertical directions.

? Size

Vertical reduction: 1/3, 1/4

Horizontal reduction: 1/3, 1/4

– The horizontal size can be adjusted by adjusting the PLL divisor

– The display area vertical and horizontal positions can be varied independently.

? Horizontal resolution (Y signal): about 190 dots

? Quantization: 6 bits

? Operating supply voltage LC74411NE : 5 V ±5 LC74411N : 5 V ±10

? Package

LC74411NE : QFP64E

LC74411N : DIP64S