HTG2190

Rev. 1.20

14

July 5, 2002

16COM, 1/4bias LCD clock source=32768Hz

On the BW LCD Mode: Bank14 has a general purpose data RAM and for Bank15, every 1 bit stands for one dot on the

LCD. If the bits is not 0, the light of the dot on the LCD will be turned on. If the bits is 0, then it will be turned off. Only MP1

can deal with the memory of this range. The contrast form of RAM location, COMMON and SEGMENT is as follows:

Address

80H

81H

82H

83H

84H

85H --------------------91H

92H

----

----

----

BFH

COM0

Bit0

COM1

Bit1

COM2

Bit2

COM3

Bit3

COM4

Bit4

COM5

Bit5

COM6

Bit6

COM7

Bit7

Address

C0H

C1H

C2H

C3H

C4H

C5H -------------------------

----

----

----

FEH

FFH

COM8

Bit0

COM9

Bit1

COM10

Bit2

COM11

Bit3

COM12

Bit4

COM13

Bit5

COM14

Bit6

COM15

Bit7

SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 -------------SEG17 SEG18

----

----

----

SEG63

LCD display memory: (Bank15)

C O M 0

G N D

G N D

W

w '

w '

6 4 H z

O N

O . .

1 6

1

2

1 6

1

2

S E G

C O M 0 - S E G

N o t e : W ' R e a l a c t i v e s e g m e n t s i g n a l w i d t h W ' =

( a d j u s t a b l e w i d t h b y R A M A d d r e s s

2 B H , 2 C H , 2 D H b i t 0 ~ b i t 4 )

W : M a x . a c t i v e s e g m e n t s i g n a l w i d t h

1 W

3 2

3 1 W

3 2

~