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UPD6464A Datasheet(PDF) 1 Page - NEC

Part No. UPD6464A
Description  ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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UPD6464A Datasheet(HTML) 1 Page - NEC

 
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©
1995, 1996
DATA SHEET
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
: Composite video signal
Number of display characters
: 12 lines, 24 columns (288 characters)
Number of character types
: 128 (
µPD6464A)/256 (µPD6465) (ROM). Variable by mask code option.
Character size
: 1 dot/1 line. 2 lines (field) can be displayed in line units.
Character color
: White (single color)
Background
: No background, black framing, black-on-white, and black filling
Dot matrix
: 12 (horizontal)
× 18 (vertical) dots without gap between adjacent characters
Blinking
: 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.
Character signal output:
: Can support VCRs with S pins if external mixer is connected because
character signal and blanking signal output pins are provided.
Video RAM data clear
: 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
: Serial input type of 8-bit variable word length
Supply voltage
: +5 V, single power supply
ORDERING INFORMATION
Part Number
Package
µPD6464ACS-×××
24-pin plastic shrink DIP (300 mil)
µPD6465CS-×××
24-pin plastic shrink DIP (300 mil)
µPD6464AGT-×××
24-pin plastic SOP (375 mil)
µPD6465GT-×××
24-pin plastic SOP (375 mil)
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
MOS INTEGRATED CIRCUIT
µPD6464A,6465
ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE,
24-COLUMN DECK-TYPE VCR
The mark
shows major revised points.


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