SCE5744 OSRAM Opto Semiconductors Inc, SCE5744 Datasheet - Page 9

• Manufacturer Part Number: SCE5744
• Description: DISPLAY 4CHAR 5X7 SER HE GRN DIP
• Manufacturer: OSRAM Opto Semiconductors Inc
• Series: Intelligent Display®r

Specifications of SCE5744

• Millicandela Rating: 180µcd
• 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 7
• Number Of Digits: 4
• Character Size: 0.18 in
• Illumination Color: High Efficiency Green
• Wavelength: 568 nm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Luminous Intensity: 180 ucd
• Viewing Area (w X H): 2.54 mm x 4.57 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: Q68100A1373

Row Strobing
Multiplexer and Display Driver
The four characters are row multiplexed with RAM resident column
data. The strobe rate is established by the internal or external
MUX Clock rate. The MUX Clock frequency is divided by a 448
counter chain. This results in a typical strobe rate of 768 Hz. By
pulling the Clock SEL line low, the display can be operated from an
external MUX Clock. The external clock is attached to the CLK I/O
connection (pin 8). The maximum external MUX Clock frequency
should be limited to 3 MHz.
When a high speed external clock is used the frequency can be
further divided down by 16 by using the built in prescaler. In the
control word format data bit D4 is set high (D4=1). It is not recom-
Basic Instruction Set
Instruction
LCD
LDA
SCL
LCWD
Control Word Format
2006-03-30
D7
Row
Load
1
SCE5740, SCE5741, SCE5742, SCE5743, SCE5744, SCE5745
0
1
2
3
4
5
6
Load Row 0
0
Columns
1 2 3 4
Opcode
000
101
110
111
D6
1
0
1
2
3
4
5
6
Load Row 1
0 1 2 3 4
Columns
D5
1
PS
0
1
0
1
2
3
4
5
6
Load Row 2
0 1 2 3 4
Columns
No Divide
by 16
MUX Clock/16
Pre-Scalar
PS
D4
0
1
2
3
4
5
6
Load Row 3
0 1 2 3 4
9
Columns
Address/Data
D4
X
PS
PS
mended to use the prescaler with the internal clock.
An asynchronous hardware Reset (pin 6) is also provided. Bring-
ing this pin low will clear the Character Address Register, Control
Word Register, RAM, and blanks the display. This action leaves the
display set at Character Address 0, and the Brightness Level set at
100%.
The user can activate four Control functions. These include: LED
Brightness Level, IC Power Down, Prescaler, or Display Clear.
OPCODEs and six bit words are used to initiate these functions.
The OPCODEs and Control Words for the Character Address and
Loading Column Data are shown in Tables „Load Character
Address“ (page 10) and „Load Column Data“ (page 10).
D3
B3
B3 Peak Current
0
1
D3
B3
B3
0
1
2
3
4
5
6
Full
Reduce to 12.5%
X
Load Row 4
0
Columns
1 2 3 4
D2
A2
B2
B2
D2
B2
B2
0
0
0
0
1
1
1
1
0
1
2
3
4
5
6
D1
A1
B1
B1
Load Row 5
B1
0
0
1
1
0
0
1
1
0 1
Columns
B0
0
1
0
1
0
1
0
1
2 3 4
D0
A0
B0
B0
D1
B1
Brightness
100%
53%
40%
27%
20%
13%
6.6%
Blank Display &
Power Down
0
1
2
3
4
5
6
Load Row 6
0 1 2 3 4
Columns
Comments
Load Column Data
Load Digit Address
Software Clear
Load Control Word Data
IDXX5184
IDCW5162
D0
B0