HD66727 Datasheet, PDF (43/97 Pages) Hitachi Semiconductor – Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

HD66727
Table 23 Instruction List (cont)
Code
No. Instruction R/W RS DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Description
Execution
Cycle ^*1
DA DDRAM
0 0 1 1 0 IRE KF1 KF0 ADD Sets the initial higher
5
address set
(upper DDRAM address to the
(upper bits)
bits) address counter, and key
scan cycle.
DA DDRAM
00111
address set
(lower bits)
ADD (lower bits)
Sets the initial lower
5
DDRAM address to the
address counter.
WD Write data to 0 1
RAM
Write data
Writes data to DDRAM, 5
CGRAM, SEGRAM,
annunciator/LED/gener
al port, or SEG/COM
shift direction.
RD Read data 1 1
from RAM
Read data
Reads data from DDRAM, 5
CGRAM, or SEGRAM.
Note: 1. Represented by the number of operating clock pulses; the execution time depends on the
supplied clock frequency or the internal oscillation frequency.
Bit definition:
BF = 1: Internally operating
SF:
Key-scan state
TF = 1: Key-scan internally operating
SD:
Key-scanned data
I/D = 1: Address increment
I/D = 0: Address decrement
OSC = 1: System clock divided by four
B/W = 1: Black-white inverting cursor on
C = 1:
8th raster-row cursor on
B = 1:
Blink cursor on
D = 1:
Character/segment display on
FW = 0: 5-dot font width
FW = 1: 6-dot font width
LC = 1: Line containing AC given cursor attribute
AMP = 1: Voltage followers and booster on
SLP = 1: Sleep mode
STB = 1: Standby mode
CT:
Contrast adjustment
NL1, NL0: Number of display lines [00: 1 line (1/10 duty ratio), 01: 2 lines (1/18 duty ratio), 10: 3 lines
(1/26 duty ratio), 11: 4 lines (1/34 duty ratio)]
DL3–DL1: Double-height lines (DL1 = 1: 1st line, DL2 = 1: 2nd line, DL3 = 1: 3rd line)
SN2–SN0: Display-start line (000: 1st line, 001: 2nd line, 010: 3rd line, 011: 4th line, 100: 5th line)
SL2–SL0: Display-start raster-row (000: 1st raster-row ... 111: 8th raster-row)
DA = 1: Annunciator display on
AAN/ASEG: Annunciator address (0000–0010), LED/general port address (PORT2–PORT0, LED2–LED0)
(0011)
AAN/ASEG: SEG/COM shift change address (CMS, SGS) (0100), SEGRAM address (1000–1111)
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