HD66724 Datasheet, PDF (52/117 Pages) Hitachi Semiconductor – (Graphics LCD Controller/Driver with Key Scan Function)

HD66724/HD66725
Table 32 Instruction List
Register
Name
Code
R/W RS DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Description
Execu-
tion
Cycle ^*1
Key scan data 1 0
read
KSD
Reads key scan data (KSD). 0
No operation
0 0 0 0 0 0 0 0 0 0 No operation (NOP).
0
Clear display
0 0 0 0 0 0 0 0 0 1 Clears entire display and 85
sets address 0 into the
address counter.
Return home
0 0 0 0 0 0 0 0 1 0 Sets DDRAM address 0 into 0
the address counter.
Start oscillator 0 0 0 0 0 0 0 0 1 1 Starts the oscillation standby —
mode.
Driver output
control
Power control
0 0 0 0 0 0 0 1 CMS SGS Selects the common driver 0
shift direction (CMS) and
segment driver shift direction
(SGS).
0 0 0 0 0 0 1 AMP SLP STB Turns on LCD power supply 0
(AMP), and sets the sleep
mode (SLP) and standby
mode (STB).
Contrast control 1 0 0 0 0 0 1 0 SW CT4 CT3 Sets the register selection 0
BT1 BT0 ^{(SW), upper contrast}
adjustment bits (CT4-3) or
boost level (BT1/0).
Contrast control 2 0 0 0 0 0 1 1 CT2 CT1 CT0 Sets the lower contrast
0
BS2 BS1 BS0 ^{adjustment bits (CT2-0) or}
LCD bias value (BS2-0).
Entry mode set 0 0 0 0 1 0 0 ROM I/D GR Sets the CGROM memory 0
bank switching (ROM),
address update direction
after RAM access (I/D), and
graphics mode (GR).
Cursor control 0 0 0 0 1 0 1 B/W C B Sets black-white inverting 0
cursor (B/W), 8th raster-row
cursor (C), and blink cursor
(B).
Display on/off
control
0 0 0 0 1 1 0 D CEN LC Sets display on (D), centers 0
the screen (CEN), and
displays the line cursor (LC).
Display line
control
0 0 0 0 1 1 1 NL2 NL1 NL0 Sets the number of display 0
lines (NL2-0).
Double-height 0 0 0 1 0 0 0 DL3 DL2 DL1 Specifies double-height
0
display control
display lines (DL3-1).
Vertical scroll
control 1
0 0 0 1 0 0 1 SN2 SN1 SN0 Sets the display-start line 0
(SN2-0).
Vertical scroll
control 2
0 0 0 1 0 1 0 SL2 SL1 SL0 Sets the display-start raster- 0
row (SL2-0).
52