EM78468
8-BIT Microcontroller
1frame
1frame
VDD
VDD
COM0
VLCD2,3
GND
COM0
COM1
SEG N
VLCD2,3
GND
VDD
VDD
COM1
SEG N
VLCD2,3
GND
VLCD2,3
GND
VDD
VDD
VLCD2,3
GND
VLCD2,3
GND
VDD
VDD
VLCD2,3
GND
VLCD2,3
GND
SEG N- COM0
ON
SEG N- COM0
ON
-VLCD2,3
-VDD
-VLCD2,3
-VDD
VDD
VDD
VLCD2,3
GND
VLCD2,3
GND
SEG N- COM1
OFF
SEG N- COM1
OFF
-VLCD2,3
-VDD
-VLCD2,3
-VDD
1/2 bias, 1/2 duty
1/2 bias, 1/2 duty
B type
A type
Fig. 18 LCD Waveform for 1/2 Bias, 1/2 Duty
1frame
1frame
VDD
VDD
COM0
COM1
COM2
SEG N
VLCD2,3
GND
COM0
COM1
COM2
SEG N
VLCD2,3
GND
VDD
VDD
VLCD2,3
GND
VLCD2,3
GND
VDD
VDD
VLCD2,3
GND
VLCD2,3
GND
VDD
VDD
VLCD2,3
GND
VLCD2,3
GND
VDD
VDD
VLCD2,3
GND
VLCD2,3
GND
SEG N- COM0
ON
SEG N- COM0
ON
-VLCD2,3
-VDD
-VLCD2,3
-VDD
VDD
VDD
VLCD2,3
GND
VLCD2,3
GND
SEG N- COM1
OFF
SEG N- COM1
OFF
-VLCD2,3
-VDD
-VLCD2,3
-VDD
1/2 bias, 1/3 duty
B type
1/2 bias, 1/3 duty
A type
Fig. 19 LCD Waveform for 1/2 Bias, 1/3 Duty
46 •
Product Specification (V1.1) 04.11.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
