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UPD6464AGT Datasheet

  • UPD6464AGT

  • ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN ...

  • 52頁(yè)

  • NEC   NEC

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DATA SHEET
碌
PD6464A,6465
ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE,
24-COLUMN DECK-TYPE VCR
MOS INTEGRATED CIRCUIT
The
碌
PD6464A,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
碌
PD6464A,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
脳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
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Video signal input/output
Number of display characters
Number of character types
Character size
Character color
Background
Dot matrix
Blinking
:
:
:
:
:
:
:
:
Composite video signal
12 lines, 24 columns (288 characters)
128 (
碌
PD6464A)/256 (
碌
PD6465) (ROM). Variable by mask code option.
1 dot/1 line. 2 lines (field) can be displayed in line units.
White (single color)
No background, black framing, black-on-white, and black filling
12 (horizontal)
脳
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.
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.
NTSC/PAL/PAL-M/SECAM/PAL-N (
碌
PD6464A only)
Synchronization separation circuit for composite synchronizing signal and
脳4
multiplier
Serial input type of 8-bit variable word length
鈥?Character signal output:
鈥?Video RAM data clear
鈥?Supported video signal method
鈥?Internal circuit
鈥?Interface with microcomputer
鈥?Supply voltage
:
:
:
:
:
: +5 V, single power supply
ORDERING INFORMATION
Part Number
Package
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)
碌
PD6464ACS-脳脳脳
碌
PD6465CS-脳脳脳
碌
PD6464AGT-脳脳脳
碌
PD6465GT-脳脳脳
Remark
脳脳脳
: 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.
漏
1995, 1996

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