HDLO-3416 Avago Technologies US Inc., HDLO-3416 Datasheet - Page 7

• Manufacturer Part Number: HDLO-3416
• Description: DISPLAY DOT MATRIX 32.77X20.07MM 5X7 RED
• Manufacturer: Avago Technologies US Inc.
• Series: HDLx-3416r

Specifications of HDLO-3416

• Character Format: Dot Matrix
• Character Size: 6.9mm
• Led Color: Red
• Luminous Intensity: 3.5mcd
• No. Of Digits / Alpha: 4
• Display Area Width: 32.77mm
• Display Area Height: 10.16mm
• Millicandela Rating: *
• Internal Connection: *
• Size / Dimension: 1.29" x 0.79" (32.77mm x 20.07mm)
• Color: Red
• Configuration: *
• Voltage - Forward (vf) Typ: *
• Package / Case: 22-DIP
• Display Type: Alphanumeric
• Number Of Digits/alpha: 4
• Digit/alpha Size: 0.27" (6.86mm)
• Number Of Digits: 4
• Illumination Color: Red
• Wavelength: 626 nm
• Operating Voltage: - 0.5 V to 7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Common Pin: -
• Lead Free Status / Rohs Status: Details

7
Electrical Description
Pin Function
Chip Enable (CE
CE
Clear (CLR, Pin 5)
Cursor Enable
(CUE Pin 11)
Cursor Select
(CU, Pin 10)
Write (WR, Pin 9)
Address Inputs
(A
7 and 8)
Data Inputs (D
Pins 16 – 22)
V
GND (Pin 12)
Blanking Input
(BL, Pin 14)
DD
1
2
, Pins 3 and 4)
and A
(Pin 6)
0
, Pins
0
-D
1
and
6
,
Description
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
memory. Address 00 accesses the far right display
location. Address 11 accesses the far left location.
D
the display.
V
GND is the display ground.
BL is used to flash the display, blank the
display or to dim the display.
0
DD
0
-A
-D
1
and CE
is the positive power supply input.
1
6
are used to specify the input data for
selects a specific location in the display
2
must be a logic 0 to write to the display.
Display Internal Block Diagram
Figure 1 shows the HDLX-3416
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.
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.