HTG2190 datasheet(13/64 Pages) HOLTEK

13 / 64 page

HTG2190

Rev. 1.00

June 29, 2001

In a similar case, if the stack is full and a CALL

is subsequently executed, stack overflow occurs

and the first entry will be lost (only the most re-

cent eight return address are stored).

Data memory - RAM

· Bank 0 (BP4~BP0=00000)

The Bank 0 data memory includes special

purpose and general purpose memory. The

special purpose memory is addressed from

00H to 3FH. All data memory areas can han-

dle arithmetic, logic, increment, decrement

and rotate operations directly. Except for

some dedicated bits, each bit in the data

memory can be set and reset by the SET [m].i

and CLR [m].i instructions, respectively. They

are also indirectly accessible through the mem-

ory pointer registers (MP0;01H, MP1;03H).

· Bank 1~11 (BP4~BP0=0001B~1011B)

The range of RAM starting from 40H to FFH

are for general purpose. Only MP1 can deal

with the memory of this range.

· Bank 14/15 (BP4~BP0=01110B~01111B)

The range of RAM starts from 80H to FFH.

Every bit stands for one dot on the LCD. If the

bit is "1", the light of the dot on the LCD will

be turned on. If the bit is "0", then it will be

turned off. Only MP1 can deal with the mem-

ory of this range.

The contrast form of RAM location, COM-

MON, and SEGMENT is as follows.

LCD driver output

The maximum output number of the HTG2190

LCD driver is 16´64. The Common output sig-

nal can be selected as 16 com or 8 com by mask

option. The LCD driver bias type is "C" type, ex-

ternal capacitor is required and the bias voltage

is 1/4 bias. Some of the Segment outputs share

pins with I/O pins, PE0~PE7 (SEG40~47),

PD0~PD7(SEG48~55) and PC0~PC7 (SEG56~63).

Whether segment output or I/O pin can be de-

cided by mask option.

LCD driver output can be enabled or disabled

by setting COL3 (bit 6 of COL3; 2EH) without

the influence of the related memory condition.

TM R 2

TM R 2 C

IN T C 1

TB H P

TM R 3

TM R 3 C

PW M C

PW M

X' T AL C

CO L 3

C o m m on P ad Addr es s R o t a t o r

D / A D at a Lo w e r - or de r B y t e R egi s t er

D / A D at a H i gher - o r der B y t e R egi s t er

V o l u m e C on t r ol R eg i s t e r

00H

01H

02H

03H

04H

05H

06H

07H

08H

09H

0AH

0B H

0C H

0D H

0E H

0F H

10H

11H

12H

13H

14H

15H

16H

17H

18H

19H

1AH

1B H

1C H

IAR 0

MP 0

IAR 1

MP 1

ACC

PC L

TB L P

TB L H

WD T S

ST AT U S

IN T C 0

TM R 0 H

TM R 0 L

TM R 0 C

TM R 1 H

TM R 1 L

TM R 1 C

PAC

PB C

PC C

PD C

PE C

P A I / O D at a R egi s t er

P A I / O C ont r o l R egi s t e r

P B I / O D at a R egi s t er

P B I / O C ont r o l R egi s t e r

P C I / O D at a R egi s t er

P C I /O C o n tr o l R e g i s t e r

P D I / O D at a R egi s t er

P D I/O C o n tr o l

P E I / O D at a R egi s t er

P E I / O C ont r o l R egi s t e r

I ndi r e c t Addr es s i ng R egi s t er 0

M e m o r y P oi nt er 0

I ndi r e c t Addr es s i ng R egi s t er 1

M e m o r y P oi nt er 1

B ank P oi nt er

Accu m u l a t o r

P r ogr am C ount er Low er - b y t e R egi s t er

T a bl e P o i n t e r Low er - o r d er B y t e R e gi s t er

T a bl e H i gher - o r der B y t e R egi s t er

W a t c hd og T i m e r O p t i on S e t t i n g R egi s t er

S t at us R eg i s t e r

I n t e r r upt C on t r ol R eg i s t e r 0

T i m e r C o unt er 0 H i gher - o r der B y t e R egi s t er

T i m e r C o unt er 0 L o w er - o r der B y t e R egi s t e r

T i m e r C o unt er 0 C ont r o l R egi s t e r

T i m e r / E v ent C ount er 1 H i ghe r - or der B y t e R egi s t e r

T i m e r / E v ent C ount er 1 Low - o r der B y t e R egi s t er

T i m e r / E v ent C ount er 1 C on t r ol R e g i s t e r

S pec i a l P u r pos e

D a t a M em or y

I n t e r r upt C on t r ol R eg i s t e r 1

T a bl e P o i n t e r H i gh er - o r d e r B y t e R e g i s t er

T i m e r 2 R egi s t er

T i m e r 2 C ont r o l R egi s t er

T i m e r 3 R egi s t er

T i m e r 3 C ont r o l R egi s t er

X ' t a l F a s t O s c i l l at or up C ont r o l

P W M C ont r o l

PW M D a t a

S e r i al C ont r o l

S e r i al D at a

C o lo r 0 P a le t t e s

C o lo r 1 P a le t t e s

C o lo r 2 P a le t t e s

C o lo r 3 P a le t t e s

B ank 14 D a t a M em or y

( 128 B y t e )

G ene r a l P u r p os e

B ank 0 D at a M e m o r y

( 192 B y t e )

B ank 15 D a t a M em or y

( 128 B y t e )

G ene r a l P u r p os e

B ank 11 D a t a M em or y

( 192 B y t e )

G ene r a l P u r p os e

B ank 1 D at a M e m o r y

( 192 B y t e )

CO M R

DAL

DAH

VO L C

SE R C

S E RDAT A

CO L 0

CO L 1

CO L 2

1D H

1E H

1F H

20H

21H

22H

23H

24H

25H

26H

27H

28H

29H

2AH

2B H

2C H

2D H

2E H

2F H

30H

31H

32H

33H

3F H

40H

FF H

40H

FF H

40H

FF H

80H

FF H

80H

FF H

: U n u s e d

RAM mapping

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