DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD6467
ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER,
12-ROW, 28-COLUMN, CAMERA-CONTAINED VCR
The
µ
PD6467 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
µ
PD6467 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
µ
PD6461, 6462 and 6466, and
therefore, the
µ
PD6467 is compatible with the existing models, and the software resources for the existing models
can be used.
FEATURES
• Number of display characters
• Types of character
• Character size
• Number of character colors
• Framing
• Dot matrix
• Blinking
: 12 rows, 28 columns (336 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)
×
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.
• 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
• Blue back function
• External dot clock input
• Signal output
: No background, blank background, or filled background selectable in screen
units.
: Blue or white can be selected as the background.
: Frequency 2-divide function is selectable.
: 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.
• Video RAM data clear
: Implemented by video RAM batch clear command or by clear function on
power-ON.
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability
and additional information.
Document No. S14455EJ2V0DS00 (2nd edition)
Date Published April 2001 N CP(K)
Printed in Japan
The mark
shows major revised points.
©
1999
µ
PD6467
• Interface with microcomputer
• Supply voltage
• Process
• Small package size
: 8-bit variable word length serial input (LSB first/MSB first selectable by
command)
: Supports low voltage (2.0 to 3.6 V)
: CMOS low power consumption
: 20-pin plastic SSOP (5.72 mm (225))
ORDERING INFORMATION
Part Number
Package
20-pin plastic SSOP (5.72 mm (225))
µ
PD6467GR-xxx
Remarks 1.
NEC’s standard model is the
µ
PD6467GR-001.
For the details of the character generator ROM, refer to
5. CHARACTER PATTERNS.
2.
xxx indicates a ROM code suffix.
2
Data Sheet S14455EJ2V0DS
BLOCK DIAGRAM
CMDCT 6
DATA 3
CLK 1
CS 2
Data input shift
register
9 TEST
5 V
DD
...
Instruction decoder
Control signals
10 GND
4 PCL
Data selector
Display
control
register
Character size
register
Horizontal
address
register
Write
address
counter
Video RAM
Horizontal size
counter
Horizontal
position
counter
Horizontal
address
counter
Character Color
Blink
Reverse
Output
data
data
data
specification
data
9 bits
3 bits
1 bit
1 bit
data 1 bit
×
×
×
×
×
336 words 336 words 336 words 336 words 336 words
Back-
ground
control
data
register
Data Sheet S14455EJ2V0DS
OSC
IN
OSC
OUT
8
7
Oscilla-
tion
circuit
Vertical
address
register
Character
generator
ROM
12×18 bits
×
512 words
Vertical
address
counter
Hsync 20
Vsync 19
Synchro-
nization
protection
circuit
Vertical size
counter
Vertical
position
counter
Output controller
µ
PD6467
16 17 18 15
V
R
V
G
V
B
V
BLK
(B
BLK
)
Remark
Signals in ( ) are set by using an initial status setting command (RGB + RGB compatible blanking).
14 13
12 11
V
C1
BLK1 V
C2
BLK2
(G
BLK
)
(R
BLK
)
3
µ
PD6467
PIN CONFIGURATION (Top View)
20-pin plastic SSOP (5.72 mm (225))
µ
PD6467GR-xxx
CLK
CS
DATA
PCL
V
DD
CMDCT
OSC
OUT
OSC
IN
TEST
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Hsync
Vsync
V
B
V
G
V
R
V
BLK
(B
BLK
)
V
C2
(G
BLK
)
BLK2 (R
BLK
)
V
C1
BLK1
Remarks 1.
xxx indicates a ROM code suffix.
2.
Signals in ( ) are set by using an initial status setting command (RGB + RGB compatible blanking).
4
Data Sheet S14455EJ2V0DS
µ
PD6467
B
BLK
BLK1, BLK2
CLK
CMDCT
CS
DATA
G
BLK
GND
Hsync
OSC
IN
OSC
OUT
PCL
R
BLK
TEST
V
B
V
BLK
V
C1
, V
C2
V
DD
V
G
V
R
Vsync
: Blanking B
: Blanking Output 1, 2
: Clock
: Command Control
: Chip Select
: Data Input
: Blanking G
: Ground
: Horizontal Synchronous Signal Input
: Oscillator Input
: Oscillator Output
: Power-ON Clear
: Blanking R
: Test
: Character Signal Output
: Blanking Signal Output for V
R
, V
G
, V
B
: Character Signal Output 1, 2
: Power Supply
: Character Signal Output
: Character Signal Output
: Vertical Synchronous Signal Input
Data Sheet S14455EJ2V0DS
5
创意市集
