HD66727 Datasheet, PDF (42/97 Pages) Hitachi Semiconductor – Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

HD66727
Table 23 Instruction List
Code
No. Instruction R/W RS DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Description
Execution
Cycle ^*1
KS Busy
1 0 BF
flag/key scan
read
SF TF
SD
Reads busy flag (BF), key- 0
scan state (SF and TF),
and data in key scan
registers (SD).
CL Clear display 0 0 0 0 0 0 0 0 0 1 Clears entire display and 310
sets address 0 into the
address counter.
CH Return home 0 0 0 0 0 0 0 0 1 0 Sets DDRAM address 0 5
into the address counter.
OS Start
0 0 0 0 0 0 0 0 1 1 Starts the oscillation
—
oscillator
standby mode.
EM Entry mode 0 0 0 0 0 0 0 1 I/D OSC Sets the address update 5
set
direction after RAM access
(I/D), and system clock
division (OSC).
CR Cursor
control
0 0 0 0 0 0 1 B/W C B Sets black-white inverting 5
cursor (B/W), 8th raster-
row cursor (C), and blink
cursor (B).
DO Display
0 0 0 0 0 1 0 D FW LC Sets character/segment 5
on/off control
display on (D), font width
(FW), and line-cursor
display (LC).
PW Power
control
0 0 0 0 0 1 1 AMP SLP STB Turns on LCD power
5
supply (AMP), and sets
the sleep mode (SLP) and
standby mode (STB).
DC Display
control
0 0 0 0 1 NL1 NL0 DL3 DL2 DL1 Sets the number of display 5
lines (NL) and the lines to
be doubled in height.
CN Contrast
control
0 0 0 1 0 SN2
CT
Sets the display-start line 5
(SN2) and contrast-
adjusting value (CT).
SC Scroll control 0 0 0 1 1 SN1 SN0
SL
Sets the display-start line 5
(SN) and display-start
raster-row (SL).
AS Annunciator/ 0 0 1 0 0 DA
SEGRAM
address set
AAN/ASEG
Turns on the annunciator 5
display (DA) and sets
annunciator/SEGRAM
address.
CA CGRAM 0 0 1 0 1
address set
ACG
Sets the initial CGRAM 5
address to the address
counter.
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