SCDV5543 OSRAM Opto Semiconductors Inc, SCDV5543 Datasheet - Page 7

• Manufacturer Part Number: SCDV5543
• Description: DISPLAY 4CHAR .123" 5X5 GRN DIP
• Manufacturer: OSRAM Opto Semiconductors Inc
• Series: Intelligent Display®r

Specifications of SCDV5543

• Millicandela Rating: 5.4mcd
• Size / Dimension: 0.78" L x 0.40" W x 0.20" H (19.91mm x 10.16mm x 5.08mm)
• Color: Green
• Configuration: 5 x 5
• Number Of Digits: 4
• Character Size: 0.123 in
• Illumination Color: Green
• Wavelength: 565 nm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Luminous Intensity: 5.4 mcd
• Viewing Area (w X H): 2.41 mm x 3.41 mm
• Display Type: 5 x 7 Dot Matrix
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Forward (vf) Typ: -
• Internal Connection: -
• Lead Free Status / Rohs Status: Details
• Other names: Q68000A8893

Operation of the SCDV554X
The SCDV554X display consists of a CMOS IC containing control
logic and drivers for four 5 x 5 characters. These components are
assembled in a compact plastic package.
Individual LED dot addressablity allows the user great freedom in
creating special characters or mini-icons. The User Definable
Character Set Examples illustrate 200 different character and sym-
bol possibilities.
The use of a serial data interface provides a highly efficient inter-
SCDV554X Block Diagram
2006-01-23
MUX CLK I/O
MUX Clock SEL
RESET
Serial
Data
Serial
Data Clock
LOAD
&
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
D7 D6 D5
OPCODE
OPCODE
Decode
& Timing Logic
Counter Chain
Row Decoder
Software
3
Oscillator
Clear
& Driver
D4 D3 D2 D1 D0
5
DATA
Character
Adddress
Adddress
Register
Register
Control
7
Word
connection between the display and the mother board. The
SCDV554X requires only 4 lines as compared to 15 for an equiva-
lent four character parallel input part.
The on-board CMOS IC is the electronic heart of the display. The
IC accepts decoded serial data, which is stored in the internal RAM.
Asynchronously the RAM is read by the character multiplexer at a
strobe rate that results in a flicker free display. Figure „SCDV554X
Block Diagram“ (page 7) shows the three functional areas of the IC.
These include: the input serial data register and control logic, a
100 bits two port RAM, and an internal multiplexer/display driver.
Brightness &
Power Down
Lamp Test
10
5
4
5
Display Multiplexer
Column Logic & Driver
4 - 5 x 5 Characters
Read 10 x 10
Write 20 x 5
0
100 bits
RAM
1
2
10
3
IDBD5261