EM65570 ELAN Microelectronics Corp, EM65570 Datasheet - Page 69

• Manufacturer Part Number: EM65570
• Description: 68com / 98seg 65k Color Stn Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.0) 09.05.2005
(This specification is subject to change without further notice)
When using the window function to access RAM, you should set the following registers
before accessing.
WIN=”1”, AXI=”1”, AYI=”1”
X Address, Y Address, Window X End Address, Window Y End Address
Moreover, the following address condition must be met.
Window end X address
Window end Y address
The increment control of the X and Y addresses by AIM, AYI, and AXI registers are as
follows.
NOTES: 1. Regardless of AIM value, the AX and AY registers do not increment
*
AX:
When each AX exceeds maxH,
AY:
maxH: The maximum internal X-address in each access mode
AIM
AYI
0
1
0
0
1
1
Transition of AX and AY Register
00H
00H
2. The X address automatically changes according to the AIM setting
3. The Y address automatically changes according to the AIM setting
4. Change the X and Y address accordingly to the AIM setting. When the X address
exceed maxH
When writing to display RAM or reading from display RAM
This is effective when accessing successive address area
Only when writing to display RAM
This is used in the case of Read Modify Write
00H
00H
Transition of AX Register
Transition of AY Register
00H
00H
AXI
0
1
0
1
01H
01H
*
, Y address increment occurs
Window start X address
Window start Y address
Address is not incremented
X-Address is incremented
Y-Address is incremented
X and Y both are incremented
.......
.......
Select Address Increment Operation
*
AY increments
maxH
43H
maxH*
43H
Address Increment Timing
*
68COM/ 98SEG 65K Color STN LCD Driver
Transition of X Address
Transition of Y Address
Same as AX register
Transition of X and Y Address
Same as AY register
Same as AX and AY register
Remarks
EM65570
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