HDSP2114S OSRAM Opto Semiconductors Inc, HDSP2114S Datasheet - Page 9

• Manufacturer Part Number: HDSP2114S
• Description: LED Displays 5x7 Hi-Eff Green 0.2 , 8-CHARACTER
• Manufacturer: OSRAM Opto Semiconductors Inc
• Series: Intelligent Display®r

Specifications of HDSP2114S

• Display Type: Dot Matrix
• Emitting Color: Hi-Eff. Green
• Number Of Digits: 8
• Digit Size (in): .2in
• Viewing Area Height (mm): 4.81mm
• Viewing Area Length (mm): 2.85mm
• Package Type: Panel
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Industrial
• Operating Temp Range: -40C to 85C
• Mounting: Through Hole
• Pin Count: 28
• Total Thickness (mm): 5.31mm
• Opto Display Type: Panel
• Pattern Type: Dot Matrix
• Millicandela Rating: 200µcd
• Size / Dimension: 1.70" L x 0.77" W x 0.21" H (42.67mm x 19.58mm x 5.31mm)
• Color: Green
• Configuration: 5 x 7
• Character Size: 0.2 in
• Illumination Color: High Efficiency Green
• Wavelength: 568 nm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Luminous Intensity: 510 ucd
• Viewing Area (w X H): 2.85 mm x 4.81 mm
• Lead Free Status / RoHS Status: Compliant
• Voltage - Forward (vf) Typ: -
• Internal Connection: -
• Lead Free Status / Rohs Status: Details
• Other names: Q68000A8564

Block Diagram
Functional Description
The display's user interface is organized into five memory
areas. They are accessed using the Flash Input, FL , and
address lines, A3 and A4. All the listed RAMs and Regis-
ters may be read or written through the data bus. See
Table „Memory Selection“. Each input pin is described in
Pin Definitions.
Five Basic Memory Areas
Character RAM
Flash RAM
User-Defined
Character RAM
(UDC RAM)
User-Defined Address
Register (UDC Address
Register)
Control Word
Register
2006-01-23
HSDP2110S, HSDP2111S, HSDP2112S, HSDP2113S, HSDP2114S, HSDP2115S
Data
Bus
Stores either ASCII (Katakana)
character data or an UDC RAM
address
1 x 8 RAM which stores Flash data
Stores dot pattern for custom
characters
Provides address to UDC RAM
when user is writing or reading
custom character
Enables adjustment of display
brightness, flash individual
characters, blink, self test or clearing
the display
4
Character
Character
Register
Register
Counter
Address
Decode
D Latch
Holding
RAM
RAM
OSC
UDC
3
4
Counter
(Read/Write)
for Display
Character
Character
32
Counter
Decode
Decode
Decode
Drivers
ROM
Word
Row
128
64
16
16
Counter
7
9
ROM
UDC
RAM
RST can be used to initialize display operation upon
power up or during normal operation. When activated,
RST will clear the Flash RAM and Control Word Register
(00H) and reset the internal counter. All eight display
memory locations will be set to 20H to show blanks in all
digits.
FL pin enables access to the Flash RAM. The Flash
RAM will set (D0=1) or reset (D0=0) flashing of the char-
acter addressed by A0–A2.
The 1 x 8 bit Control Word Register is loaded with
attribute data if A3=0.
The Control Word Logic decodes attribute data for
proper implementation.
Character ROM is designed for 128 ASCII characters.
The ROM is Mask Programmable for custom fonts.
The Clock Source could either be the internal oscillator
(CLKSEL=1) of the device or an external clock
(CLKSEL=0) could be an input from another HDSP211X
display for the synchronization of blinking for multiple dis-
plays.
The Display Multiplexer controls the Row Drivers so no
additional logic is required for a display system.
The Display has eight digits. Each digit has 35 LEDs
clustered into a 5 x 7 dot matrix.
8 Digit Display
5
5
Test
Column
Self
Latch
25
Register
25
Control
Word
Controls
Column
Drivers
Display
Cursor
MUX
and
Flash
RAM
IDBD5064