HCMS-39X2 Datasheet, PDF (13/22 Pages) Agilent(Hewlett-Packard) – 3.3 V High Performance CMOS 5x7 AlphaNumeric Displays

DATA TO
NEXT
CHARACTER
PIXEL
DATA FROM
PREVIOUS
CHARACTER
ROW 7
ROW 6
ROW 5
ROW 4
ROW 3
ROW 2
ROW 1
ROW 0
(NOT USED)
Figure 7. Pixel map.
Control Register
The Control Register allows
software modification of the IC’s
operation and consists of two
independent 7-bit control words.
Bit D₇ in the shift register selects
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.
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