hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 357

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

13.3.2
The relationship between the LCD RAM and the display segments differs according to the duty
cycle. LCD RAM maps for the different duty cycles when segment external expansion is not used
are shown in figures 13.5 to 13.8, and LCD RAM maps when segment external expansion is used
in figures 13.9 to 13.12.
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.
342
H'F740
H'F74F
Figure 13.5 LCD RAM Map when Not Using Segment External Expansion (1/4 Duty)
Relationship between LCD RAM and Display
SEG
COM
SEG
bit7
32
2
4
SEG
COM
SEG
bit6
32
2
3
SEG
COM
SEG
bit5
32
2
2
SEG
COM
SEG
bit4
32
2
1
SEG
COM
SEG
bit3
31
1
4
SEG
COM
SEG
bit2
31
1
3
SEG
COM
SEG
bit1
31
1
2
SEG
COM
SEG
bit0
31
1
1