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UPD6466GT Datasheet

  • UPD6466GT

  • ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER, 12-RO...

  • 70頁

  • NEC   NEC

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DATA SHEET
MOS INTEGRATED CIRCUIT
碌
PD6466
ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER,
12-ROW, 24-COLUMN, CAMERA-CONTAINED VCR
The
碌
PD6466 is a CMOS LSI for on-screen character display, and can be used in combination with a microcomputer
to display the tape counter, time, and date in the view finder of a video camera, or the time of a video tape, messages
such as dates on pictures, and channel number on a TV screen.
Characters are displayed in 12 (horizontal) by 18 (vertical) dots. Two or more characters can be combined to display
Kanji (Japanese characters) and symbols. This LSI supports color view finders and is provided with three sets of
character output signals (RGB output: for color view finder, V
C1
output: for recording (or monitor pin), V
C2
output: for
monitor pin (or recording)).
In addition, the
碌
PD6466 is also equipped with a power-ON clear function and a video RAM batch clear command
so that it can mitigate the workload of the microcomputer.
The command format of this LSI is identical to that of the existing models, the
碌
PD6461 and 6462, and therefore,
the
碌
PD6466 is compatible with the existing models, and the software resources for the existing models can be used.
FEATURES
鈥?Number of display characters
鈥?Types of character
鈥?Character size
鈥?Number of character colors
鈥?Framing
鈥?Dot matrix
鈥?Blinking
: 12 rows, 24 columns (288 characters)
: 512 types (ROM). Changeable by using mask code option.
: Can be expanded up to four-fold in vertical and horizontal directions
independently, in units of lines.
: 8 colors
: Framing or no framing, or white or black framing selectable in screen units.
: 12 (horizontal)
脳
18 (vertical) dot configuration. No gap between adjacent
characters.
: Blinking can be turned ON/OFF in character units. The blinking ratio is 1:1.
The blinking frequency can be selected from about 1 Hz, about 2 Hz, and
about 0.5 Hz in screen unit.
鈥?Character color reversing function : The color of the character and that of the background can be reversed.
鈥?Character left and right reverse
鈥?Background
鈥?Blue back function
鈥?Signal output
: Left and right can be reversed for display in character units.
: No background, blank background, or filled background selectable in screen
units.
: Blue or white can be selected as the background.
: 3 sets (output (1) R, G, B + BLK/V
C1
+ V
BLK1
/V
C2
+ V
BLK2
and output (2) R +
R
BLK
/B + B
BLK
/G + G
BLK
selectable by command)
When output (1) is selected, V
C1
and V
C2
outputs can be selected from three
types.
鈥?Video RAM data clear
鈥?Interface with microcomputer
鈥?Supply voltage
鈥?Process
: Implemented by video RAM batch clear command or by clear function on
power-ON.
: 8-bit variable word length serial input (LSB first/MSB first selectable by
command)
: Supports low voltage (2.7 to 5.5 V)
: CMOS low power consumption
The information in this document is subject to change without notice.
Document No. S10991EJ2V2DS00 (2nd edition)
Date Published November 1998 N CP(K)
Printed in Japan
The mark
shows major revised points.
漏
1997

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