EM65571AGH EMC [ELAN Microelectronics Corp], EM65571AGH Datasheet - Page 95

• Manufacturer Part Number: EM65571AGH
• Description: 130COM / 128SEG 65K Color STN LCD Driver
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.0) 08.04.2005
(This specification is subject to change without further notice)
8.2.17 Data Bus Size Select
Note: During a reset: {C256, HSW, ABS, WLS} = 0H, read address: 9H
8.2.18 Electronic Volume Register
Note: Read address: AH
Note: Read address: BH
D7 D6 D5 D4
1
D7
D7
1
1
0
During a reset: {DV6~DV0} = 00H
The asterisk “*” mark means “Don’t care”
D6
D6
0
0
PWM
WLS
ABS
HSW
C256
The PWM register selects the gradation display mode.
Variable display mode using 16 gradations selected from 48 gradations in 4096
color mode (65K=0, C256=0)
Variable display mode using 8 gradations selected from 48 gradations in 256 color
mode (65K=0, C256=1)
PWM = “1”: 32-gradation fixed display mode
The WLS register selects a data bus size in accessing the MPU
WLS = “0”: The data bus size is 8-bit width
WLS = “1”: The data bus size is 16-bit width
When an MPU access to the control register used 16-bit bus size, high byte data
is ignored.
ABS= “0”: normal mode
ABS= “1”: change corresponding bit from input data bus
HSW=“0”: High speed writing mode off
HSW=“1”: High speed writing mode on accessing the 8-bit data RAM
C256= “0”: 4096-color mode
C256= “1”: 256-color mode
*IF 65K=1, C256 is prohibited control bit.
PWM = “0”: Variable display mode using 32 gradations selected from 48
gradations in 65K color mode (65K=1, C256=”*”)
0
D5
D5
1
1
1
C256 HSW
D3
D4
D4
0
1
DV3 DV2 DV1 DV0
D3
D3
D2
*
DV6 DV5 DV4
D2
D2
ABS
D1
D1
D1
WLS
D0
D0
D0
130COM/128SEG 65K Color STN LCD Driver
CSB
CSB
CSB
0
0
0
RS
1
RS
RS
1
1
RDB WRB
RDB WRB RE2 RE1 RE0
RDB
1
1
1
WRB
0
0
0
RE2 RE1 RE0
RE2 RE1 RE0
1
1
1
EM65571
0
0
0
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0
0
0