NJU6677 데이터 시트보기 (PDF) - Japan Radio Corporation
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NJU6677 Datasheet PDF : 45 Pages
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NJU6677
(3-11) Partial Display
This instruction divides the active display area in a LCD panel to 11 units consisting of 8 commons per unit
and displays one or two blocks of active display area consisting of a unit or more. In the partial display mode,
the display duty ratio is set automatically according to the number of unit in a block or two.
Therefore, the partial display function realizes to go down the LCD driving voltage according to the display
duty ratio. As a result, the operation current of display system is much saved against the full display mode.
The display units
UNIT
0
UNIT
1
UNIT
2
UNIT
3
UNIT
4
UNIT
5
UNIT
6
UNIT
7
UNIT
8
UNIT
9
UNIT
10
132-segment
(8 commons)
(8 commons)
88-common
Partial display instruction
The partial display operates by the conbination of instructions which area unit number of start position start unit
block in the display area and a number of display unit from start position to end as a block. The number of
block is set up to two.
1st Block
R /W
A0 RD WR D7
D6
D5
D4
D3
D2
D1
D0
Start display
0
1
0
0
0
0
0
D
D
D
D unit
0
1
0
0
0
0
1
D
D
D
D
The number of
display units
2nd Block
0
1
0
0
0
1
0
D
D
D
D
0
1
0
0
0
1
1
D
D
D
D
After execution of the next instruction, the display mode is changed to the
partial display and the duty is changed automatically.
0
1
0
0
1
0
0
0
0
0
0
D :unit number (Hex.)
Start display
unit
The number of
display units
Partial display
on
Note) Incase of full display (1/88 duty), all of units on the display are selected when the first
start unit is set to “0” (0,0,0,0) and the second number of display unit is set to “11”
(1,0,1,1). In this time, the second block settings are ignored.
In case of only one block display, the second block settings are ignored when the
second start unit is set to “0” (0,0,0,0) and the second display unit number is set to “0”
(0,0,0,0).
Keep the order of partial display instruction sequence.
Do not set over “UNIT 10” the display data in DD RAM are assigned continuously from
page 0 for all of display block, even if non-display area is existed between the first
block and the second.
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