hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 470

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 13 LCD Controller/Driver
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 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.
Rev. 7.00 Mar 10, 2005 page 428 of 652
REJ09B0042-0700
H'F740
H'F74F
Relationship between LCD RAM and Display
SEG32
COM4
SEG2
Bit 7
SEG32
COM3
SEG2
Bit 6
Figure 13.3 LCD RAM Map (1/4 Duty)
SEG32
COM2
SEG2
Bit 5
SEG32
COM1
SEG2
Bit 4
SEG31
COM4
SEG1
Bit 3
SEG31
COM3
SEG1
Bit 2
SEG31
COM2
SEG1
Bit 1
SEG31
COM1
SEG1
Bit 0