hd66710 Renesas Electronics Corporation., hd66710 Datasheet - Page 62
hd66710
Manufacturer Part Number
hd66710
Description
Dot Matrix Liquid Crystal Display Controller/driver
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66710.pdf
(73 pages)
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HD66710
Low Power Mode
When LP bit is 1 and the EXT pin is low (without an extended driver), the HD66710 operates in low
power mode. In 1-line display mode, the HD66710 operates on a 4-division clock, and in 2-line or 4-line
display mode, it operates on 2-division clock. So, instruction execution takes four times or twice as long.
Notice that in this mode, display shift and scroll cannot be performed. Clear display shift with the return
home instruction, and the horizontal scroll quantity.
352
Clear horizontal scroll quantity
Extended register enable
Set a low power mode
Low power operation
Reset a power mode
Return home
Return home
HDS = “000”
Figure 29 Low Power Mode Operation
Note: In this operation, instruction execution time
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
0
0
takes four times or twice as long.
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
DL
DL
DL
0
0
0
N
N
N
0
0
0
AS2 AS1 AS0
1
0
1
0
1
BE
BE
BE
1
1
0
1
0
0
0
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