em65570sagh ELAN Microelectronics Corp, em65570sagh Datasheet - Page 79

• Manufacturer Part Number: em65570sagh
• Description: 68com/98seg 65k Color Stn Lcd Drivers
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.0) 04.18.2006
(This specification is subject to change without further notice)
8.2.35 RAM Data Length Set
(At the time of reset: {C256, HSW, ABS, WLS} = 0H, read address: 9H)
The WLS register select data bus size for access from MPU
WLS = “0”: The data bus size is 8-bits width
WLS = “1”: The data bus size is 16-bits width
When MPU access to control register using 16-bits bus size , high byte data is ignored.
ABS
ABS= “0”: normal mode
ABS= “1”: change corresponding bit from input data bus
HSW
HSW=“0”: High speed writing mode off
HSW=“1”: High speed writing mode on accessing the 8-bit data RAM
*HSW is only used for horizontal direction (X-direction) of multi-RAM data write mode.
C256
C256= “0”: 4096-color mode
C256= “1”: 256-color mode
*IF 65K=1, C256 is prohibited control bit.
8.2.36 Electronic Volume Register
(Read address: AH)
(Read address: BH)
(At the time of reset: {DV6~DV0} = 00H)
The DV register can control VEV voltage.
– mark means “Don’t care”
– mark means “Don’t care”
D7
D7
D7
1
1
1
D6
D6
D6
0
0
0
D5
D5
0
D5
1
1
D4
D4
1
D4
1
0
C256 HSW ABS WLS
D3
D3
DV3 DV2 DV1 DV0
D3
–
DV6 DV5 DV4
D2
D2
D2
D1
D1
D1
D0
D0
68COM/98SEG 65K Color STN LCD Drivers
D0
CSB RS RDB WRB RE2 RE1 RE0
CSB RS RDB WRB RE2 RE1 RE0
0
0
CSB RS RDB WRB RE2 RE1 RE0
0
1
1
1
1
1
1
0
0
0
1
1
1
EM65570S
0
0
0
x 73
0
0
0