HD404328 Datasheet, PDF (62/96 Pages) Hitachi Semiconductor – 4 BIT SINGLE CHIP MICROCOMPUTER

HD404328 Series
LCD control register (LCR): $013
2
1
0
Initial value: 000, R/W: W
Blank/display
Power switch on/off
Display on/off in watch mode or subactive mode
(not used)
LCD mode register (LMR): $014
3
2
1
0
Initial value: 0000, R/W: W
Duty cycle selection
Input clock selection
LCD output register (LOR): $015
3
2
1
0
Initial value: 0000, R/W: W
R2/SEG1–SEG4 pin mode selection
R3/SEG5–SEG8 pin mode selection
R4/SEG9–SEG12 pin mode selection
R5/SEG13–SEG16 pin mode selection
Figure 38 LCD Registers
LCD Data Area and Segment Data ($050–$067): As shown in figure 39, each bit of the storage area
corresponds to one of four duty cycles. If data is written to an area corresponding to a certain duty cycle, it
is automatically output to the corresponding segments as display data.
60