CMOS LSI

Ordering number : EN*5155

91195HA (OT) No. 5155-1/5

Preliminary

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

Image-Processing LSI

for Fax, Copier and OCR Products

LC82102, LC82102W

Overview

The LC82102 and LC82102W convert analog video

signals from CCD or contact image sensors to high-

quality binary video data. The LC82102/W converts the

input analog data to multi-valued data and uses two-

dimensional filtering and an error diffusion technique that

produces high-quality images to produce a two-valued

image. Finally, the LC82102 reduces the image in the

main and subsidiary scan directions. The LC82102

requires absolutely no external memory since it limits the

number of pixels processed to 2040 per line. This LSI can

implement the image processing used by FAX, copier and

OCR products.

Features

• Number of pixels processed: 2040 pixels/line

• Processing speed: 500 ns/pixel maximum (when the

CLKIN input frequency is 32 MHz)

• Built-in 8-bit A/D converter (includes a sensor signal

delay adjustment function)

• Built-in 6-bit D/A converter for setting the A/D

converter high reference potential

• Sensor drive circuit (supports CCD and all CIS types)

• Digital clamp (single-point clamp, even/odd clamp)

• Distortion correction (white correction: 8-pixel

averaging correction, black correction: black correction

subtraction data setting)

• Gamma correction (supports user-defined curves)

• Simple binary-conversion processing (fixed threshold

level, density-adaptive threshold level)

• Intermediate processing error diffusion (64 levels)

• Image reduction (thinning, fine black line retaining, fine

white line retaining)

• Single-voltage 5 V supply and low power due to CMOS

process fabrication

Package Dimensions

unit: mm

3159-QFP64E

unit: mm

3190-SQFP64

SANYO: SQFP64

[LC82102W]

[LC82102]

SANYO: QIP64E