EM65570
68COM/ 98SEG 65K Color STN LCD Driver
HALT
The power saving operating condition is set ON/OFF with this command.
HALT = “0”: Normal operation
HALT = ”1”: Power-saving operation
When the power-saving state is set, the power consumption can be decreased to
almost equal the standby power consumption.
The internal condition during power saving are as follows:
1) The oscillating circuit and power supply circuit are stopped.
2) The LCD drive is stopped, and output of the segment and common drivers are at
VSS level.
3) The clock input from CK pin is forbidden.
4) The contents of Display RAM data are stored.
5) The operational mode stores the state of command executed before executing the
power saving command.
AMPON
Sets the internal OP-AMP circuit block ON/OFF (voltage regulator, electronic volume,
and voltage conversion circuit).
AMPON = “0”: The internal OP-AMP circuit is OFF
AMPON = ”1”: The internal OP-AMP circuit is ON
8.2.8 LCD Duty (DS)
D7
D6 D5 D4 D3 D2 D1 D0
DS3 DS2 DS1 DS0
CSB RS RDB WRB RE2 RE1 RE0
1
0
1
0
0
1
1
0
0
0
0
(At the time of reset: {DS3, DS2, DS1, DS0} = FH, read address: AH)
The DS register set and its corresponding LCD display width and duty:
DS3
DS2
DS1
DS0
Display Width and Duty
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1/8 duty
1/12 duty
1/16 duty
1/20 duty
1/24 duty
1/28 duty
1/32 duty
1/36 duty
1/40 duty
1/44 duty
1/48 duty
1/52 duty
1/56 duty
1/60 duty
1/64 duty
1/68 duty
Partial display can be made possible by setting an arbitrary duty ratio.
Product Specification (V1.0) 09.05.2005
(This specification is subject to change without further notice)
• 65
ELAN [ ELAN MICROELECTRONICS CORP ]
