HD66760 Datasheet, PDF (23/105 Pages) Hitachi Semiconductor – 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors

Table 13 BS Bits and Output Level
BT1
BT0
VLOUT Output Level
0
0
Three-times step-up
0
1
Four-times step-up
1
0
Five-times step-up
1
1
Six-times step-up
HD66760
Table 14 DC Bits and Operating Clock Frequency
DC1
0
0
1
1
DC0
0
1
0
1
Operating Clock Frequency in the Step-up Circuit
32-divided clock
16-divided clock
128-divided clock
64-divided clock
Table 15 AP Bits and Amount of Fixed Current
AP1
AP0
Amount of Fixed Current in the Operational Amplifier
0
0
Operational amplifier and booster do not operate.
0
1
Small
1
0
Middle
1
1
Large
Table 16 Switching Reference Power Supply
PS1 PS0 VREG Pin
0
0
Output (1/2Vci)
0
1
Output (1/2Vci)
1
0
Input (Vreg)
1
1
Open (High-Z)
V1REF Pin
Output
(1/2Vci ¥ N-times)
Output
(1/2Vci ¥ N-times)
Output
(Vreg ¥ N-times)
Open (High-Z)
VLREF Pin
Input
(from V1REF pin)
Input
(from V1REF pin)
Input
(from V1REF pin)
Input
(Vlcd: LCD voltage)
VLREF Regulator
Unused
Used
Unused
Unused