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DLX713X データシート(PDF) 2 Page - OSRAM GmbH

部品番号 DLX713X
部品情報  5x7 Dot Matrix Intelligent Display
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メーカー  OSRAM [OSRAM GmbH]
ホームページ  http://www.osram.com
Logo OSRAM - OSRAM GmbH

DLX713X データシート(HTML) 2 Page - OSRAM GmbH

  DLX713X Datasheet HTML 1Page - OSRAM GmbH DLX713X Datasheet HTML 2Page - OSRAM GmbH DLX713X Datasheet HTML 3Page - OSRAM GmbH DLX713X Datasheet HTML 4Page - OSRAM GmbH  
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 2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
Appnote 25
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
OSRAM Opto Semiconductors GmbH & Co. OHG • Regensburg, Germany
www.osram-os.com • +49-941-202-7178
2
May 31, 2000-13
Table 1. Electrical inputs
Table 2. Pin description
Operation
In a dot matrix display system, it is advantageous to use a mul-
tiplexed approach with 12 drivers (5 digit plus 7 segments)
rather than 35 segment drivers, reducing the number of drives
and interconnections required. A multiplexed system must be a
synchronous system or the digits or elements may have differ-
ent on (lit) times and therefore varying brightness.
The DLX713X is an internally multiplexed display but the data
entry is asynchronous. Loading data is similar to writing into a
RAM. Present the data, select the chip, and give a write signal.
For a multidigit system, each digit has its own unique location
and will display its contents until replaced by another code.
The waveforms of Figure 4 demonstrates the relationship of
the signals required to generate a write cycle. Check the data
sheet for minimum values required for each signal.
Pin
Name
Pin
Name
1VCC
14
D6 data input (MSD)
2LT lamp test
13
D5 data input
3CE chip enable
12
D4 data input
4WR write
11
D3 data input
5
BL1 brightness
10
D2 data input
6
BL0 brightness
9
D1 data input
7
GND
8
D0 data input (LSD)
VCC
Positive Supply +5 V
GND
Ground
D0–D6
Data Lines, see Figure 3 (Character set)
CE
Chip Enable (active low)
Determines which device in an array will
accept data
WR
Write (active low)
Data and chip enable must be present and
stable before and after the write pulse (see
DLX713X data sheet for timing)
BL0, BL1
Blanking Control Input (active low)
Used to control level of display brightness
LT
Lamp Test (active low)
Causes all dots to light at 1/2 brightness
Figure 3. Character set
Figure 4. Timing characteristics
Display Blanking and Dimming
The DLX713x Intelligent Display has the capability of three
levels of brightness plus blank. Figure 5 shows the combina-
tion of BL0 and BL1 for the different levels of brightness. The
BL0 and BL1 inputs are independent of write and chip enable
and does not affect the contents of the internal memory. A
flashing display can be achieved by pulsing the blanking pins
at a 1–2 hertz rate. Either BL0 or BL1 should be held high to
light up the display.
Table 3. Dimming and blanking control
Brightness Level
BL1
BL0
Blank
0
0
1/7 brightness
0
1
1/2 brightness
1
0
full brightness
1
1
ASCII
CODE
D0
D1
D2
D3
0
0
0
0
0
1
0
0
0
1
0
1
0
0
2
1
1
0
0
3
0
0
1
0
4
1
0
1
0
5
0
1
1
0
6
1
1
1
0
7
0
0
0
1
8
1
0
0
1
9
0
1
0
1
A
1
1
0
1
B
0
0
1
1
C
1
0
1
1
D
0
1
1
1
E
1
1
1
1
F
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
2
3
4
5
6
7
D6 D5 D4 HEX
1. High=1 level. 2. Low=0 level.
T
W
T
DS
T
CES
CE
WR
D0-D6
T
DH


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