EM65101
128COM/160SEG 16 Gray Scale Level LCD Driver
NOTE
You must set the scroll top address, the scroll bottom address, the scroll specified
address, and the scroll start address carefully when using the scroll function. If there
is any error, the scrolling result will be inaccurate. Follow the rules shown below:
※ Scroll top address <= Scroll bottom address
※ Scroll specified address = Scroll top address + panel scroll area – 1
※ Scroll top address <= Scroll start address <= Scroll bottom address
7.17 Initial Values
ITEM
Initial Value
Display RAM
Not fixed
00H set
00H set
X Address
Y Address
Display starting common
Display ON/OFF
Display Normal/Reverse
Display duty
Set at the first common(0H)
Display OFF
Normal
1/128
n-line alternated
(BF1,BF0)
Every frame unit
(0,0)
Common shift direction
Increment mode
Register in electronic volume
Power Supply
COM0 → COM127
Increment OFF
(0,0,0,0,0,0,0)
OFF
Bias ratio
1/12 bias
Booster
6 times
Discharge Register
RM value
Disabled
8.9 times
Windows function
Scrolling function
Disabled
Disabled
7.18 Safety Measures when Switching Power ON and OFF
The high current that may occur when a voltage is supplied to the LCD driver power
supply while the system power supply is floating, could permanently damage the LSI.
Hence, the precautionary actions as detailed below should be taken into
considerations seriously when switching power on and off.
7.18.1 When Using the External Power Supply
Power ON Proper Sequence:
1) Logic system (VDD) power ON, perform a reset operation
2) Supply the external LCD drive voltage to the corresponding pins (V0, V1, V2, V3
and V4)
Product Specification (V0.4) 08.15.2005
• 37
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
