MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 82

no-image

MC68HC708AS48

Manufacturer Part Number
MC68HC708AS48
Description
Advance Information
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
Central Processor Unit (CPU)
7.4.2 Index Register
The 16-bit index register allows indexed addressing of a 64-Kbyte
memory space. H is the upper byte of the index register, and X is the
lower byte. H:X is the concatenated 16-bit index register.
In the indexed addressing modes, the CPU uses the contents of the
index register to determine the conditional address of the operand.
Read:
Write:
Reset:
The index register can serve also as a temporary data storage location.
Advance Information
82
Bit
15
14
13
12
11
10
9
0
0
0
0
0
0
0
X = Indeterminate
Figure 7-3. Index Register (H:X)
Central Processor Unit (CPU)
8
7
6
5
4
3
2
1
0
X
X
X
X
X
X
X
MC68HC708AS48
Rev. 4.0
MOTOROLA
Bit
0
X

Related parts for MC68HC708AS48