Rev. 6.00, 08/04, page 416 of 628
13.3.2
Relationship between LCD RAM and Display
The relationship between the LCD RAM and the display segments differs according to the duty
cycle. LCD RAM maps for the different duty cycles are shown in figures 13.3 to 13.6.
After setting the registers required for display, data is written to the part corresponding to the duty
using the same kind of instruction as for ordinary RAM, and display is started automatically when
turned on. Word- or byte-access instructions can be used for RAM setting.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SEG2
SEG2
SEG2
SEG2
SEG1
SEG1
SEG1
SEG1
H'F740
H'F74F
SEG31
SEG32
SEG32
SEG32
SEG32
SEG31
SEG31
SEG31
COM4
COM3
COM2
COM1
COM4
COM3
COM2
COM1
Figure 13.3 LCD RAM Map (1/4 Duty)
Summary of Contents for H8/38024 Series
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