Datasheet > SED1345F0A

SED1345F0A

更新时间： 2024-11-26 21:22:35

品牌	Logo	应用领域
精工 - SEIKO		外围集成电路
页数	文件大小	规格书
12页	45K
描述
CRT to LCD Converter, 640 X 480 Dots, CMOS, PQFP80

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数据手册

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SED1345F0A 数据手册

SED1345

CMOS VIDEO - LCD INTERFACE (VLI)

8 Levels of Gray Scale

•

■ DESCRIPTION

The SED1345 is a video-LCD interface (VLI) developed for a dot matrix LCD display system. It converts

separate video signals for CRT display into signals for LCD.

The SED1345 can use a conventional LCD driver to display data at eight gradation levels corresponding to

digital video signal data I, R, G and B. The on-chip color pallet for gradation display allows setting of any

gradation level for each of the 16 colors on the CRT display.

A 640 × 480 dot panel with eight gradation levels can be driven using only 256K bits of frame buffer memory.

This leads to a significant reduction in system memory cost.

With the SED1345, the user can select not only a display size but a display area to configure a display panel

of flexible size from 640 × 200 dots to 640 × 480 dots (maximum). These LCD display sizes are compatible

with various display modes such as CGA^®and EGA^®.

■ FEATURES

Low-power CMOS technology

TTL-compatible signal input

LCD display size:

•

Maximum dot clock: ......................... 30 MHz

Supports 40KB SRAM frame buffer

Duty cycle: ............................. 1/200 to 1/480

Power-on clear function

Horizontal: ..................................... 640 dots

Vertical: .................200, 350, 400, 480 lines

Supports 8 levels of gray shade

Single power supply: ...................... 5V ± 5%

Package:....................... QFP5-80 pin (FOA)

•

Supports single panel and dual panel

LCD driver interface:4 bits bus and 4 bits × 2 bus

■ SYSTEM BLOCK DIAGRAM

DIGITAL R

DIGITAL G

DIGITAL B

SED1345

MONO LCD

HSYNC

VSYNC

SRAM

185

12 3 4 5 6 7...12

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与SED1345F0A相关器件

型号	品牌	获取价格	描述	数据表
SED1351	ETC	获取价格	GRAPHICS LCD CONTROLLER
SED1351F	ETC	获取价格	CMOS GRAPHIC LCD CONTROLLER
SED1351F0A	SEIKO	获取价格	Dot Matrix LCD Controller, 1024 X 512 Dots, CMOS, PQFP100
SED1351F0B	SEIKO	获取价格	IC,LCD CONTROLLER,CMOS,QFP,100PIN
SED1352	EPSON	获取价格	Document Number: X16B-Q-001-06
SED1352D0B	SEIKO	获取价格	640X400 DOTS DOT MAT LCD DSPL CTLR, UUC
SED1352F0A	SEIKO	获取价格	Dot Matrix LCD Controller, 640 X 480 Dots, MOS, PQFP100
SED1352F0B	SEIKO	获取价格	640X400 DOTS DOT MAT LCD DSPL CTLR, PQFP100, QFP-100
SED1352FOA	SEIKO	获取价格	Interface Circuit,
SED1353	EPSON	获取价格	SED1353 GRAPHICS LCD CONTROLLER