AN1447 Datasheet, PDF (10/26 Pages) STMicroelectronics – SOFTWARE DRIVER FOR 4-MULTIPLEXED LCD WITH A STANDARD ST62

4-MULTIPLEXED LCD WITH A STANDARD ST62
The driver supports 16 different characters to be displayed on a digit: the 10 numeric digits,
some letters or symbols, or the blank digit. The character coding is included in the library
through a look-up table.
Table 2. Character coding for 7-segment digits
Code 0 1 2 3 4 5 6 7 8 9 a b c d e f
Display
Table 3. Bit definitions for icons variable
7
-
-
-
-
ICO3
ICO2
ICO1
0
ICO0
Bit 3:0 = ICO[3..0] Icon on/off
These bits indicate, for each icon segment, if it must be on or off.
0: Icon segment off
1: Icon segment on
Table 4. Bit definitions for flashing variable
7
HR0
HR1
MIN0
MIN1
ICO3
ICO2
ICO1
0
ICO0
Bit 3:0 = ICO[3..0] Icon flashing on/off
These bits indicate, for each icon segment, if it must be flashing or not.
0: Icon segment not flashing
1: Icon segment flashing
Bit 5:4 = MIN[1..0] Minute digit flashing on/off
These bits indicate, for each minute 7-segment digit, if it must be flashing or not.
0: Digit not flashing
1: Digit flashing
Bit 7:6 = HR[3..0] Hour digit flashing on/off
These bits indicate, for each hour 7-segment digit, if it must be flashing or not.
0: Digit not flashing
1: Digit flashing
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