Holtek HT46R22, Handbook

Page: 33 / 162

Special Purpose Data Memory
This area of Data Memory is where registers, necessary for the correct operation of the
microcontroller, are stored. Most of the registers are both readable and writable but some are pro-
tected 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
²
00H
²
.
24
A/D Type MCU
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
2 0 H
2 1 H
2 2 H
2 3 H
2 4 H
2 5 H
2 6 H
2 7 H
2 8 H
2 9 H
3 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
: U n u s e d
R e a d a s " 0 0 "
I A R
M P
A C C
P C L
T B L P
T B L H
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 D
P D C
P W M
A D R L
A D R H
A D C R
A C S R
H T 4 6 R 4 7
H T 4 6 C 4 7
H T 4 6 R 2 2
H T 4 6 C 2 2
I A R 0
M P 0
I A R 1
M P 1
A C C
P C L
T B L P
T B L H
S T A T U S
I N T C 0
T M R H
T M R L
T M R C
P A
P A C
P B
P B C
P C
P C C
P D
P D C
P W M 0
P W M 1
I N T C 1
H A D R
H C R
H S R
H D R
A D R L
A D R H
A D C R
A C S R
H T 4 6 R 2 3
H T 4 6 C 2 3
H T 4 6 R 2 4
H T 4 6 C 2 4
I A R
M P
A C C
P C L
T B L P
T B L H
S T A T U S
I N T C 0
T M R
T M R C
P A
P A C
P B
P B C
P C
P C C
P D
P D C
P W M
I N T C 1
H A D R
H C R
H S R
H D R
A D R L
A D R H
A D C R
A C S R
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
S T A T U S
I N T C 0
T M R 0 H
T M R 0 L
T M R 0 C
T M R 1 H
T M R 1 L
T M R 1 C
P A
P A C
P B
P B C
P C
P C C
P D
P D C
P W M 0
P W M 1
P W M 2
P W M 3
I N T C 1
H A D R
H C R
H S R
H D R
A D R L
A D R H
A D C R
A C S R
P F
P F C