EM65568AF EMC [ELAN Microelectronics Corp], EM65568AF Datasheet - Page 85
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EM65568AF
Manufacturer Part Number
EM65568AF
Description
130 COM/ 128 SEG 4096 Color STN LCD Driver
Manufacturer
EMC [ELAN Microelectronics Corp]
Datasheet
1.EM65568AF.pdf
(112 pages)
- Current page: 85 of 112
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8.2.15 Display Select Control
(At the time of reset: {PWM,GLSB, PS} = 0H, read address: 8H)
PS
In 4096 color mode, select 16 gradation level from 32 gradation palette. In 256 color mode, just setting lower 8 gradation.
PS= “0”:Lower 8 gradation setting
PS= “1”:Upper 8 gradation setting
GLSB
In 256 color mode, for the segment driver of 4-gradation display, select 4 gradations from 8 gradations using the 2 bits written
to the corresponding RAM area and the 1 bit supplemented by the gradation LSB circuit. Supplement the 1 bit of data by
setting the gradation LSB register (GLSB).
PWM
The PWM register select the gradation display mode.
8.2.16 Data Bus Size Select
(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
* This specification is subject to be changed without notice.
D7
D7
1
1
※ Mark shows “Don’t care”
Gradation LSB = “0”: Selects 0 as the LSB information on the RAM for 4-gradation segment driver.
Gradation LSB = “1”: Selects 1 as the LSB information on the RAM for 4-gradation segment driver.
PWM = “0”: Variable display mode using 16 gradations selected from 32 gradations in 4096 color mode
PWM = “1”: 16-gradation fixed display mode
D6
D6
0
0
D5
D5
0
0
Variable display mode using 8 gradations selected from 32 gradations in 256 color mode (C256=1)
D4
D4
0
1
PWM GLSB
C256 HSW ABS WLS
D3
D3
D2
D2
D1
D1
D0
D0
PS
CSB
130 COM/ 128 SEG 4096 Color STN LCD Driver
CSB
0
0
85
RS
1
RS
1
RDB WRB RE2 RE1 RE0
RDB WRB RE2 RE1 RE0
1
1
0
0
1
1
0
0
0
0
2005/3/8 (V1.2)
EM65568
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