HCMS-3963 Avago Technologies US Inc., HCMS-3963 Datasheet - Page 12
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HCMS-3963
Manufacturer Part Number
HCMS-3963
Description
LED DISPLAY 5X7 4CHAR 5MM GRN
Manufacturer
Avago Technologies US Inc.
Series
HCMS-39xxr
Datasheet
1.HCMS-3902.pdf
(18 pages)
Specifications of HCMS-3963
Millicandela Rating
*
Internal Connection
*
Size / Dimension
*
Color
Green
Configuration
*
Voltage - Forward (vf) Typ
*
Package / Case
12-DIP
Display Type
Alphanumeric
Number Of Digits/alpha
4
Digit/alpha Size
0.20" (5mm)
Character Format
Dot Matrix
Character Size
5.08mm
Led Color
Green
Luminous Intensity
252µcd
No. Of Digits / Alpha
4
Display Area Width
21.46mm
Display Area Height
11.43mm
Number Of Digits
4
Illumination Color
Green
Wavelength
574 nm
Operating Voltage
5.5 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
Control Register
The Control Register allows software modification of
the IC’s operation and consists of two independent
7-bit control words. Bit D
in the shift register selects
7
one of the two 7-bit control words. Control Word 0
performs pulse width modulation brightness control,
peak pixel current brightness control, and sleep mode.
Control Word 1 sets serial/simultaneous data out
mode, and external oscillator prescaler. Each function is
independent of the others.
Control Register Data Loading
Data is loaded into the Control Register, MSB first,
according to the procedure shown in Table 1 and Figure
5. First, RS is brought to logic high and then CE is brought
to logic low. Next, each successive rising CLK edge will
shift in the data on the D
pin. Finally, when 8 bits
IN
have been loaded, the CE line is brought to logic high.
When CLK goes to logic low, new data is copied into the
selected control word. Loading data into the Control
Register takes place while the previous control word
configures the display.
Control Word 0
Loading the Control Register with D
= Logic low selects
7
Control Word 0 (see Table 2). Bits D
-D
adjust the
0
3
display brightness by pulse width modulating the LED
on time, while Bits D
-D
adjusts the display brightness
4
5
by changing the peak pixel current. Bit D
selects normal
6
operation or sleep mode.
Sleep mode (Control Word 0, bit D
= Low) turns off the
6
Internal Display Oscillator and the LED pixel drivers. This
mode is used when the IC needs to be powered up, but
does not need to be active. Current draw in sleep mode
is nearly zero. Data in the Dot Register and Control Words
are retained during sleep mode.
Control Word 1
Loading the Control Register with D
= logic high
7
selects Control Word 1. This Control Word performs
two functions: serial/simultaneous data out mode and
external oscillator prescale select (see Table 2).
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