UPD6464A Datasheet, PDF (1/52 Pages) NEC – ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR

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
• Character color
• Background
• Dot matrix
• Blinking
• Character signal output:
• Video RAM data clear
• Supported video signal method
• Internal circuit
• Interface with microcomputer
• Supply voltage
: 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)
: 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.
: 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 (µPD6464A only)
: Synchronization separation circuit for composite synchronizing signal and ×4
multiplier
: Serial input type of 8-bit variable word length
: +5 V, single power supply
ORDERING INFORMATION
Part Number
µPD6464ACS-×××
µPD6465CS-×××
µPD6464AGT-×××
µPD6465GT-×××
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)
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)
The mark shows major revised points.
Date Published May 1998 N CP(K)
Printed in Japan
©
1995, 1996