GMS81C7216 Datasheet, PDF (73/121 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C7208/7216
MCU Internal
BTC
V_DD = 5V
2R
Typ. R=65kΩ
R
BRC
R
R
V_SS
BIAS
VCL2
VCL2=3V
VCL1=2V
VCL0=1V
VCL1
VCL0
MCU Internal
BTC
V_DD = 5V
2R
R
BRC
R
R
V_SS
BIAS
VCL2
VCL2=3V
VCL1=1.5V
VCL0=1.5V
VCL1
VCL0
Short two pins
externally
BTC = “1” BRC = “1”
(a) Internal, Static or 1/3 Bias
BTC = “1” BRC = “1”
(b) Internal, Static or 1/2 Bias
Typ. R=65kΩ
Figure 18-5 Application Example of 3V LCD Panel
Some user want to use external bias resister instead of internal,
you can connect external resistor as shown in Figure 18-6. And
the external capacitors are may required for stable display accord-
ing to your system environment.
MCU Internal
V_DD
BTC
BTC = “0”
2R
R
R
R
BRC = “0” ^VSS
BRC
BIAS
VCL2
V_DD
Adjust Contrast
VCL1
VCL0
V_SS
External circuit
Figure 18-6 External Resistor
FEB. 2005 Ver 1.04
69