em65567 ELAN Microelectronics Corp, em65567 Datasheet - Page 58

• Manufacturer Part Number: em65567
• Description: Com/ Color 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)
8.2.10 Increment Control Register Set
※ Mark shows “Don’t care”
(At the tine of reset: {AIM, AYI, AXI}=0H, read address: AH)
The increment mode is set up when accessing to display RAM. By AIM, AYI, AXI register, the setting up of increment
operation/non-operation for the X address counter and the Y address counter every write access or every read access to
display RAM is possible. In setting to this control register, the increment operation of address can be made without setting
successive address for writing data or for reading data to display RAM from MPU.
After the increment control register has been set. be sure to assign address to the X and Y address registers starting from the
lowest bit. Because it is not assuring the data of X and Y address register after setting increment control register. The
increment control of X and Y address by AIM, AYI, AXI registers is as follows.
(1) Regardless of AIM, no increment for AX and AY register.
(2) According to the setting-up of AIM, automatically change X address.
In accordance with the REF register, AX register and X address becomes as follows.
Note: maxH: The internal maximum X-address in each access mode.
(3) According to the setting-up of AIM, automatically change Y address. Regardless of REF, increment by loop of
* This specification is subject to be changed without notice.
REF
AYI
D7
0
0
0
1
1
1
1
AIM
0
1
D6
AXI
0
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
Transition of AX Register
00H
Address is not increment
X-Address is increment
Y-Address is increment
X and Y both are increment
D5
1
D4
01H
0
Select Address Increment Operation
D3
※
.......
AIM
D2
max
AYI
D1
Address Increment Timing
AXI
D0
CSB
0
58
66 COM/ 96 SEG 256 Color STN LCD Driver
max
Transition of X Address
Same as AX register
RS
1
maxH
RDB WRB RE2
1
.....
0
Remark
(1)
(2)
(3)
(4)
0
00H
RE1
0
RE0
0
2003/1/9 (V0.1)
EM65567