Datasheet > D6464AGT101

D6464AGT101

更新时间： 2024-09-15 05:34:47

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日电电子 - NEC		/
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D6464AGT101 数据手册

DATA SHEET

MOS INTEGRATED CIRCUIT

µPD6464A,6465

ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE,

24-COLUMN DECK-TYPE VCR

The µPD6464A,6465 are CMOS LSIs for on-screen character display that control various display systems (such

as tape counters) including the program screens of deck-type VCRs and LD players. These LSIs are used in

combination with a microcomputer.

It can display characters each consisting of 12 (horizontal) by 18 (vertical) dots. Some chinese characters and

some pictograms can also be displayed by combining two or more characters.

The µPD6464A,6465 include a power-ON clear function and a video RAM batch clear command that mitigate the

workload of the host microcomputer. It also has a synchronization separator and a ×4 multiplier on chip, eliminating

the need of connecting an external separator IC and a crystal resonator, which reduces the mounting area and the

total cost.

FEATURES

•

Video signal input/output

Number of display characters

Number of character types

Character size

: Composite video signal

: 12 lines, 24 columns (288 characters)

: 128 (µPD6464A)/256 (µPD6465) (ROM). Variable by mask code option.

: 1 dot/1 line. 2 lines (field) can be displayed in line units.

: White (single color)

Character color

Background

: No background, black framing, black-on-white, and black filling

: 12 (horizontal) × 18 (vertical) dots without gap between adjacent characters

: Blinking can be turned ON/OFF in character units. Blinking ratio is 1:1.

Blinking frequency is selectable from about 0.5 Hz, 1 Hz, and 2 Hz in screen

units.

Dot matrix

Blinking

•

Character signal output:

Video RAM data clear

: Can support VCRs with S pins if external mixer is connected because

character signal and blanking signal output pins are provided.

: Video RAM data are cleared by video RAM clear command and power-ON

clear function.

•

Supported video signal method : NTSC/PAL/PAL-M/SECAM/PAL-N (µPD6464A only)

Internal circuit

: Synchronization separation circuit for composite synchronizing signal and ×4

multiplier

•

Interface with microcomputer

Supply voltage

: Serial input type of 8-bit variable word length

: +5 V, single power supply

ORDERING INFORMATION

Part Number

Package

µPD6464ACS-×××

µPD6465CS-×××

24-pin plastic shrink DIP (300 mil)

24-pin plastic SOP (375 mil)

µPD6464AGT-×××

µPD6465GT-×××

Remark ××× : ROM code suffix (CS-001, GT-101 : NEC standard device)

The information in this document is subject to change without notice.

Document No. S11043EJ4V0DS00 (4th edition)

Date Published May 1998 N CP(K)

Printed in Japan

The mark

shows major revised points.

1995, 1996

12 3 4 5 6 7...52

中文翻译

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