參數(shù)資料
型號: HD66731
廠商: Hitachi,Ltd.
英文描述: Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器)
中文描述: 點陣液晶顯示控制器/驅(qū)動器(點陣液晶顯示控制器/驅(qū)動器)
文件頁數(shù): 78/131頁
文件大?。?/td> 5169K
代理商: HD66731
HD66730/HD66731
78
Table 18
Instruction Registers (cont)
Reg. Index
No.
Code
Execution
Clock
Cycle
(Hex) Register R/W RS
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Description
R8
8
RAM
address
(RAR)
0
1
RA7 RA6 RA5
RA4 RA3
RA2 RA1 RA0 Resets the address
address counter for
DDRAM/CGRAM/
SEGRAM. RAM is
selected by RM1/0.
12
R9
9
RAM
data
(RDR)
0/1
1
RD7 RD6 RD5 RD4 RD3 RD2 RD1 RD0 Writes or reads data to
and from
DDRAM/CGRAM/
SEGRAM. RAM is
selected by RM1/0.
12
RF
F
Test
(TSR)
0
1
0
0
0
0
0
0
0
0
This is a test register.
Set 00 in this register.
12
Note:
The execution time depends on the input or oscillation frequency.
BF = 1:
NF1/0:
LF0 to LF3: Position of display read raster-row
ID= 1:
Address increment
= 0:
Address decrement
RM1/0:
RAM selection (00/01: DDRAM. (10: GGRAM, 11: SEGRAM)
BST = 1:
Booster on
EXT2 = 1:
Common driver extension enable
EXT1 = 1:
Segment driver extension enable
DT1/0:
Duty ratio (00: 1/14, 01: 1/27, 10: 1/40, 11: 1/53)
DCL = 1:
Executes display-clear instruction
CHM = 1:
Executes cursor-home instruction
C = 1:
Cursor on
CM1/0:
Designates cursor mode (00: 12th raster-row, 01: blinking, 10: white/black inverse)
ST = 1:
Standby mode
DC = 1:
Character display on
DS = 1:
Segment display on
NC1/0:
Sets the number of display characters (6 to 40 characters)
NL1/0:
Sets the number of display lines (00: 1 line, 01: 2 lines, 11: 4 lines)
SN1/0:
Designates the line to start displaying (00: first line, 01: second line, 10: third line, 11: fourth
line)
SL0 to SL3: Designates scroll starting raster-row(0000: first raster-row, 1100: 13th raster-row)
PS1/0:
Designates partial scroll (00: all columns scroll. 01: the leftmost column fixed, 10: the two
leftmost columns fixed, 11: the three leftmost columns fixed)
SE1 to SE4: Designates which line to scroll (SE = 1: enables the first line to be scrolled, etc.)
SQ0 to SQ5: Number of dots to scroll (0 to 48 dots)
RA0 to RA7: RAM address
RD0 to RD7: RAM data
Internal processing being performed
Position of display read line
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