EM65568 ELAN Microelectronics Corp, EM65568 Datasheet - Page 72

• Manufacturer Part Number: EM65568
• Description: 130 Com/ 128 Seg 4096 Color Stn Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

REV
Corresponding to the data of display RAM, the lighting or not-lighting of the display is set up.
REV =”0”: When RAM data at “H”, LCD at ON voltage (normal)
REV =”1”: When RAM data at “L”, LCD at ON voltage (reverse)
8.2.7 Increment Control Register Set
(At the tine of reset: {WIN,AIM,AYI,AXI}=0H, read address: AH)
This register control the increment mode and window function when accessing to display RAM. The increment operation of
AX and AY register can control by AIM,AYI and AXI registers setting and every write access or every read access to display
RAM. The AY register directly connect to display RAM as Y address. The AX register connect to address converter, and that
output to display RAM as X address in the auto increment mode, AX and AY register are increment, not directly increment X
and Y address.
In setting to this control register, the increment operation of address can be made without setting successive addresses for
writing data or for reading data to display RAM from MPU.
The WIN register use for window function control.
WIN=”0”: Normal RAM access
WIN=”1”: Window function access
In case of using window function access, should be set following register before access to RAM.
WIN=”1”, AXI=”1”, AYI=”1”
X Address, Y Address, Window X End Address, Window Y End Address
Moreover, should be keep following address condition.
Window end X address Window start X address
Window end Y address Window start Y address
Detail of window function see “6-7 Display RAM access using Window Function”.
The increment control of X and Y addresses by AIM, AYI and AXI registers are as follows.
(1) Regardless of AIM, no increment for AX and AY register.
* This specification is subject to be changed without notice.
D7
AYI
1
0
0
1
1
AIM
0
1
D6
0
AXI
0
1
0
1
When writing to Display RAM or reading from Display RAM
This is effective when access to successive address area
Only when writing to Display RAM
This is effective the case of “Read Modify Write
D5
1
Address is not increment
X-Address is increment
Y-Address is increment
X and Y both are increment
D4
0
WIN AIM AYI AXI
D3
Select Address Increment Operation
D2
D1
Address Increment Timing
D0
CSB
130 COM/ 128 SEG 4096 Color STN LCD Driver
0
72
RS
1
RDB WRB RE2 RE1 RE0
1
0
Remark
0
(1)
(2)
(3)
(4)
0
0
2005/3/8 (V1.2)
EM65568