HDLU-2416 Avago Technologies US Inc., HDLU-2416 Datasheet - Page 7

• Manufacturer Part Number: HDLU-2416
• Description: LED DISPLAY 5X7 4CHAR 5MM RED
• Manufacturer: Avago Technologies US Inc.
• Series: HDLx-2416r

Specifications of HDLU-2416

• Display Type: Alphanumeric
• Millicandela Rating: *
• Internal Connection: *
• Size / Dimension: 0.984" x 0.787" (25mm x 20mm)
• Color: Red
• Configuration: *
• Voltage - Forward (vf) Typ: *
• Package / Case: 18-DIP (0.600", 15.24mm)
• Number Of Digits/alpha: 4
• Digit/alpha Size: 0.20" (5mm)
• Number Of Digits: 4
• Character Size: 3.43 mm x 5.08 mm
• Illumination Color: Red
• Wavelength: 637 nm
• Operating Voltage: 5 V
• Operating Current: 42 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Luminous Intensity: 3.1 mcd
• Viewing Area (w X H): 22.48 mm x 5.08 mm
• Common Pin: None
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 516-1693

Electrical Description
Pin Function
Chip Enable (CE
CE
Clear (CLR, pin 3)
Cursor Enable
(CUE pin 4)
Cursor Select
(CU, pin 5)
Write (WR, pin 6)
Address Inputs
(A
Pins 8 and 7)
Data Inputs
(D
V
GND (pin 10)
Blanking Input
(BL, pin 18)
Display Internal Block Diagram
Figure 1 shows the HDLX-2416 display internal block
diagram. The CMOS IC consists of a 4 x 7 Character
RAM, a 2 x 4 Attribute RAM, a 5 bit Control Register, a
128 character ASCII decoder and the refresh circuitry
necessary to synchronize the decoding and driving of
four 5 x 7 dot matrix displays.
Four 7 bit ASCII words are stored in the Character RAM.
The IC reads the ASCII data and decodes it via the 128
character ASCII decoder. The ASCII decoder includes the
64 character set of the HPDL-2416, 32 lower case ASCII
symbols, and 32 foreign language symbols.
A 5 bit word is stored in the Control Register. Three fields
within the Control Register provide an 8 level brightness
control, master blank, and extended functions disable.
7
DD
1
0
2
-D
, pins 1 and 2)
and A
(pin 9)
6
, Pins 11-17)
0
,
1
and CE
When CLR is a logic 0 the ASCII RAM is reset to 20hex (space) and the Control
Register/Attribute RAM is reset to 00hex.
CUE determines whether the IC displays the ASCII or
the Cursor memory. (1 = Cursor, 0 = ASCII).
CU determines whether data is stored in the ASCII RAM
or the Attribute RAM/Control Register. (1 = ASCII, 0 = Attribute RAM/Control Register).
WR must be a logic 0 to store data in the display.
A
Address 00 accesses the far right display location.
Address 11 accesses the far left location.
D
display.
V
GND is the display ground.
BL is used to flash the display, blank the
display or to dim the display.
DD
0
0
-A
1
-D
and CE
is the positive power supply input.
1
6
selects a specific location in the display memory.
are used to specify the input data for the
2
must be a logic 0 to write to the display.
Description
For each display digit location, two bits are stored in
the Attribute RAM. One bit is used to enable a cursor
character at each digit location. A second bit is used to
individually disable the blanking features at each digit
location.
The display is blanked and dimmed through an internal
blanking input on the row drivers. Logic within the IC
allows the user to dim the display either through the BL
input or through the brightness control in the control
register. Similarly the display can be blanked through the
BL input, the Master Blank in the Control Register, or the
Digit Blank Disable in the Attribute RAM.