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PDF UPD6466 Data sheet ( Hoja de datos )
| Número de pieza | UPD6466 | |
| Descripción | ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER/ 12-ROW/ 24-COLUMN/ CAMERA-CONTAINED VCR | |
| Fabricantes | NEC | |
| Logotipo |  |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD6466
ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER,
12-ROW, 24-COLUMN, CAMERA-CONTAINED VCR
The µPD6466 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, VC1 output: for recording (or monitor pin), VC2 output: for
monitor pin (or recording)).
In addition, the µPD6466 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 µPD6461 and 6462, and therefore,
the µPD6466 is compatible with the existing models, and the software resources for the existing models can be used.
FEATURES
• Number of display characters : 12 rows, 24 columns (288 characters)
• Types of character
: 512 types (ROM). Changeable by using mask code option.
• Character size
: Can be expanded up to four-fold in vertical and horizontal directions
independently, in units of lines.
• Number of character colors
: 8 colors
• Framing
: Framing or no framing, or white or black framing selectable in screen units.
• Dot matrix
: 12 (horizontal) × 18 (vertical) dot configuration. No gap between adjacent
characters.
• Blinking
: 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.
• Character color reversing function : The color of the character and that of the background can be reversed.
• Character left and right reverse : Left and right can be reversed for display in character units.
• Background
: No background, blank background, or filled background selectable in screen
units.
• Blue back function
: Blue or white can be selected as the background.
• Signal output
: 3 sets (output (1) R, G, B + BLK/VC1 + VBLK1/VC2 + VBLK2 and output (2) R +
RBLK/B + BBLK/G + GBLK selectable by command)
When output (1) is selected, VC1 and VC2 outputs can be selected from three
types.
• Video RAM data clear
: Implemented by video RAM batch clear command or by clear function on
power-ON.
• Interface with microcomputer
: 8-bit variable word length serial input (LSB first/MSB first selectable by
command)
• Supply voltage
: Supports low voltage (2.7 to 5.5 V)
• Process
: 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.
© 1997
1 page  
BBLK
BLK1, BLK2
CLK
CMDCT
CS
DATA
GBLK
GND
Hsync
N.C.
OSCIN
OSCOUT
PCL
RBLK
TEST
VB
VBLK
VC1, VC2
VDD
VG
VR
Vsync
: Blanking B
: Blanking Output 1, 2
: Clock
: Command Control
: Chip Select
: Data Input
: Blanking G
: Ground
: Horizontal Synchronous Signal Input
: No Connection
: Oscillator Input
: Oscillator Output
: Power-ON Clear
: Blanking R
: Test
: Character Signal Output
: Blanking Signal Output for VR, VG, VB
: Character Signal Output 1, 2
: Power Supply
: Character Signal Output
: Character Signal Output
: Vertical Synchronous Signal Input
µPD6466
5
5 Page 
µPD6466
1.2 Application Block Diagram
Example of application in a video camera (1) (in the case of RGB + VC1 + VC2)
(When VR, VG, VB, VBLK, VC1, BLK1, VC2, and BLK2 pins are used)
DATA
CLK
CS
PCL
µPD6466
Hsync
Vsync
RGB
Video
Character
VC2 mixing circuit
Character
mixing circuit
Video+character
Color view finder
Recording block
(deck block)
Character
VC1
mixing circuit
Monitor pin block
(video signal output)
RGB : VR, VG, VB, VBLK
VC1 : VC1, BLK1
Example of application in a video camera (2) (RGB + 3BLK (RGB compatible BLK))
(When VR, VG, VB, RBLK, GBLK, and BBLK pins are used)
VC2 : VC2, BLK2
DATA
CLK
CS
PCL
µPD6466
Hsync
Vsync
R
Character
mixing circuit
Color view finder
Video
Video
G
Character
mixing circuit
Video+character
Recording block
(deck block)
Video
Character
B
mixing circuit
Monitor pin block
(video signal output)
R : VR, RBLK
G : VG, GBLK
B : VB, BBLK
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet UPD6466.PDF ] | |
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