EM65101
128COM/160SEG 16 Gray Scale Level LCD Driver
8.2.3 n Line Alternated Register (N)
D7 D6 D5 D4 D3 D2 D1 D0
N3 N2 N1 N0
CSB RS RDB WRB RE2 RE1 RE0
0
0
1
1
0
1
1
0
0
0
0
(At the time of reset: {N3, N2, N1, N0}=3H, read address: 3H)
D7 D6 D5 D4 D3 D2 D1 D0
N6 N5 N4
CSB RS RDB WRB RE2 RE1 RE0
0
1
0
0
0
1
1
0
0
0
0
*
(At the time of reset: {N7, N6, N5, N4}=0H, read address: 4H)
The EM65101 supports not only the LCD reversed AC drive in one-frame unit, but also
the n-line reversed AC drive which alternates in an n-line unit from 2 to 128 lines. The
reversed AC drive is controlled by the “NLIN” and “EOR” control bits. The values set up
by the alternating register become enabled when the NLIN control bit is “1.” When the
NLIN control bit is “0,” the alternate drive waveform is generated reserving each frame.
When a problem affecting display quality occurs, the n-line reversed AC drive can
improve the quality. Determine the number of the n-line reverse for alternating after
confirming the display quality with the actual LCD panel.
However, if the number of AC reversed lines are reduced, the LCD alternating
frequency becomes high. As a result, the charge or discharge current is increased in
the LCD cells.
EOR=0
N Line Number
EOR=1
N Line Number
N6
N5
N4
N3
N2
N1
N0
0
0
0
0
0
:
0
0
0
0
0
:
0
0
0
0
0
:
0
0
0
0
0
:
0
0
0
0
1
:
0
0
1
1
0
:
0
1
0
1
0
:
No operation
No operation
2
3
2
3
4
4
5
5
:
:
0
:
1
:
1
:
1
:
1
:
1
:
1
:
64
:
64
1
1
:
1
1
:
0
0
:
0
0
:
0
1
:
1
0
:
1
0
:
100
101
:
Prohibited Code
1
1
1
1
1
1
1
128
Product Specification (V0.4) 08.15.2005
• 45
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
