IPD2132 OSRAM Opto Semiconductors Inc, IPD2132 Datasheet - Page 9

• Manufacturer Part Number: IPD2132
• Description: LED Displays 5x7 Super Red 0.2 , 8-CHARACTER
• Manufacturer: OSRAM Opto Semiconductors Inc
• Series: Alphanumeric Programmable Display™r

Specifications of IPD2132

• Display Type: Dot Matrix
• Emitting Color: Hi-Eff. Red
• Number Of Digits: 8
• Digit Size (in): .2in
• Viewing Area Height (mm): 4.8mm
• Viewing Area Length (mm): 2.8mm
• 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: -55C to 100C
• Mounting: Through Hole
• Pin Count: 24
• Total Thickness (mm): 4.6mm
• Opto Display Type: Panel
• Pattern Type: Dot Matrix
• Millicandela Rating: 350µcd
• Size / Dimension: 1.68" L x 0.39" W x 0.21" H (42.7mm x 4.8mm x 5.3mm)
• Color: Red
• Configuration: 5 x 7
• Character Size: 0.2 in
• Illumination Color: High Efficiency Red
• Wavelength: 635 nm
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 55 C
• Luminous Intensity: 350 ucd
• Viewing Area (w X H): 2.8 mm x 4.8 mm
• Lead Free Status / RoHS Status: Compliant
• Voltage - Forward (vf) Typ: -
• Internal Connection: -
• Lead Free Status / Rohs Status: Details
• Other names: Q68000A8836

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 Registers may be read or writ-
ten through the data bus. See Table „Memory Selection“
(page 10). Each input pin is described in Pin Definitions.
Five Basic Memory Areas
2006-04-04
Character RAM
Flash RAM
User-Defined
Character RAM
(UDC RAM)
User-Defined Address
Register (UDC Address
Register)
Control Word
Register
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 charac-
ters, blink, self test or clearing
the display
Data
Bus
4
Character
Character
Register
Register
Counter
Address
Decode
D Latch
Holding
OSC
RAM
RAM
UDC
3
4
Counter
(Read/Write)
for Display
Character
Character
32
Counter
Decode
Decode
Decode
Drivers
ROM
Word
Row
128
64
16
16
Counter
9
7
ROM
RAM
UDC
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 character 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 imple-
mentation.
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 IPD213X display for synchronizing blink-
ing for multiple displays.
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.
8 Digit Display
5
5
Test
Column
Self
Latch
25
25
Register
Control
IPD2131, IPD2132, IPD2133
Word
Controls
Column
Display
Drivers
Cursor
MUX
and
Flash
RAM
IDBD5064