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UPD6465

更新时间： 2024-11-05 22:49:27
品牌 Logo 应用领域
日电电子 - NEC 录像机
页数 文件大小 规格书
52页 566K
描述
ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR

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UPD6465 数据手册

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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 shrink DIP (300 mil)  
24-pin plastic SOP (375 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  
©
1234567...52

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