EM65568AF EMC [ELAN Microelectronics Corp], EM65568AF Datasheet - Page 87

• Manufacturer Part Number: EM65568AF
• Description: 130 COM/ 128 SEG 4096 Color STN LCD Driver
• Manufacturer: EMC [ELAN Microelectronics Corp]

8.2.18 Resistance Ratio of CR Oscillator
(At the time of reset: {RF2, RF1, RF0} = 0H, read address: DH)
The RF registers can control resistance ratio of CR oscillator. Therefore frame frequency can change RF registers setting.
When change RF registers value, should be need to check LCD display quality.
* This specification is subject to be changed without notice.
RF2 RF1 RF0
D7
1
0
0
0
0
1
1
1
1
※ Mark shows “Don’t care”
D6
1
0
0
1
1
0
0
1
1
D5
0
0
1
0
1
0
1
0
1
D4
1
Initial Resistance Ratio
0.7 times of initial Resistance Ratio
0.85 times of initial Resistance Ratio
1.15 times of initial Resistance Ratio
1.3 times of initial Resistance Ratio
Prohibit Code
Prohibit Code
Prohibit Code
D3
※
RF2 RF1 RF0
D2
D1
Operation
D0
CSB
130 COM/ 128 SEG 4096 Color STN LCD Driver
0
87
RS
1
RDB WRB RE2 RE1 RE0
1
0
1
0
0
2005/3/8 (V1.2)
EM65568