HT48F06E datasheet(13/74 Pages) HOLTEK

13 / 74 page

HT48F06E/HT48F10E/HT48F30E

Rev. 1.60

July 29, 2009

Bank 1 of the RAM Data Memory contains only one spe-

cial function register, known as the EECR register,

which is used for EEPROM control and located at ad-

dress

²40H² for all devices.

Note:

Most of the RAM Data Memory bits can be di-

rectly manipulated using the

²SET [m].i² and

²CLR [m].i² instructions with the exception of a

few dedicated bits. The RAM Data Memory can

also be accessed through the Memory Pointer

registers MP0 and MP1.

General Purpose Data Memory

All microcontroller programs require an area of

read/write memory where temporary data can be stored

and retrieved for use later. It is this area of RAM memory

that is known as General Purpose Data Memory. This

area of Data Memory is fully accessible by the user pro-

gram for both read and write operations. By using the

²SET [m].i² and ²CLR [m].i² instructions individual bits

can be set or reset under program control giving the

user a large range of flexibility for bit manipulation in the

Data Memory.

Special Purpose Data Memory

This area of Data Memory, is located in Bank 0, where

registers, necessary for the correct operation of the

microcontroller, are stored. Most of the registers are

both readable and writable but some are protected and

are readable only, the details of which are located under

the relevant Special Function Register section. Note

that for locations that are unused, any read instruction to

these addresses will return the value

²00H². Although

the Special Purpose Data Memory registers are located

in Bank 0, they will still be accessible even if the Bank

Pointer has selected Bank 1.

S p e c i a l P u r p o s e

D a t a M e m o r y

0 0 H

7 F H

1 7 H

G e n e r a l P u r p o s e

D a t a M e m o r y

( 6 4 B y t e s )

H T 4 8 F 3 0 E

H T 4 8 F 0 6 E

H T 4 8 F 1 0 E

: U n u s e d , r e a d a s " 0 0 "

0 0 H

2 0 H

7 F H

1 F H

S p e c i a l P u r p o s e

D a t a M e m o r y

G e n e r a l P u r p o s e

D a t a M e m o r y

( 9 6 B y t e s )

4 0 H

Bank 0 RAM Data Memory Structure

4 0 H

E E C R

Bank 1 RAM Data Memory Structure

I A R 0

M P 0

I A R 1

M P 1

B P

A C C

P C L

T B L P

T B L H

W D T S

S T A T U S

I N T C

T M R

T M R C

P A

P A C

P B

P B C

P C

P C C

0 0 H

0 1 H

0 2 H

0 3 H

0 4 H

0 5 H

0 6 H

0 7 H

0 8 H

0 9 H

0 A H

0 B H

0 C H

0 D H

0 E H

0 F H

1 0 H

1 1 H

1 2 H

1 3 H

1 4 H

1 5 H

1 6 H

1 7 H

1 8 H

1 9 H

1 A H

1 B H

1 C H

1 D H

1 E H

1 F H

I A R 0

M P 0

I A R 1

M P 1

B P

A C C

P C L

T B L P

T B L H

W D T S

S T A T U S

I N T C

T M R

T M R C

P A

P A C

P B

P B C

P C

P C C

P G

P G C

: U n u s e d , r e a d a s " 0 0 "

H T 4 8 F 0 6 E

H T 4 8 F 1 0 E

H T 4 8 F 3 0 E

Special Purpose Data Memory Structure

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