14. Dot Matrix LCD Controller (H8/3854 Group)
Rev.3.00 Jul. 19, 2007 page 379 of 532
REJ09B0397-0300
Bit 5—Module Standby (LSBY):
Bit 5 is the module standby setting bit. When LSBY is set to 1,
the LCD controller enters standby mode. At this time, bits DISP, LPS1, and LPS0 in LR1 are
reset.
Bit 5: LSBY Description
0
LCD controller operates normally
(initial value)
1
Power supply to built-in bleeder resistances halts, display is turned off, and LCD
controller enters standby mode
Bits 4 to 2—Reserved Bits:
Bits 4 to 2 are reserved; they should always be cleared to 0.
Bit 1—Display Duty Select (DDTY1):
Bit 1 selects a display duty of 1/16 or 1/8.
Bit 1: DDTY1 Description
0
1/16 duty selected
(initial value)
1
1/8 duty selected
Y address H'8 to H'F display data is invalid
Bit 0—Reserved Bit:
Bit 0 is reserved; it should always be cleared to 0.
14.2.3
Control Register 2 (LR1)
7
⎯
⎯
⎯
6
DISP
0
W
5
LPS1
0
W
4
LPS0
0
W
3
RMW
0
W
0
⎯
⎯
⎯
2
⎯
⎯
⎯
1
INC
0
W
Bit
Initial value
Read/Write
LR1 is an 8-bit write-only register that selects operation or halting of LCD display and supply or
halting of current to the built-in bleeder resistances, performs read-modify-write mode setting, and
selects the address to be incremented in the display memory.
Upon reset, LR1 is initialized to H'00.
Bit 7—Reserved Bit:
Bit 7 is reserved; it should always be cleared to 0.
Summary of Contents for F-ZTAT H8 Series
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