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LCR—LCD Control Register
Bit
7
Initial value
1
Read/Write
6
5
PSW
ACT
DISP
0
0
R/W
R/W
Display Data Control
0 Blank data is displayed
1 LCD RAM data is displayed
Display Function Activate
LCD controller/driver operation halted
0
LCD controller/driver operates
1
LCD Drive Power Supply On/Off Control
0 LCD drive power supply off
1 LCD drive power supply on
H'C1
4
3
2
CKS3
CKS2
0
0
0
R/W
R/W
R/W
Frame Frequency Select
Bit 2
Bit 3
CKS2
CKS3
*
0
*
0
*
0
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
Rev. 6.00, 08/04, page 565 of 628
LCD Controller/Driver
1
0
CKS1
CKS0
0
0
R/W
R/W
Bit 1
Bit 1
Operating Clock
CKS1
CKS0
φ w
0
0
φ w /2
0
1
φ w /4
*
1
φ/2
0
0
φ/4
0
1
φ/8
1
0
φ/16
1
1
φ/32
0
0
φ/64
0
1
φ/128
1
0
φ/256
1
1
*: Don't care
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