MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 81
MC68HC708AS48
Manufacturer Part Number
MC68HC708AS48
Description
Advance Information
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC68HC708AS48.pdf
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7.4 CPU Registers
7.4.1 Accumulator
MC68HC708AS48
MOTOROLA
—
Rev. 4.0
Figure 7-1
the memory map.
The accumulator is a general-purpose 8-bit register. The CPU uses the
accumulator to hold operands and the results of arithmetic/logic
operations.
Reset:
Read:
Write:
15
15
15
Bit 7
shows the five CPU registers. CPU registers are not part of
Central Processor Unit (CPU)
H
6
Figure 7-2. Accumulator (A)
Figure 7-1. CPU Registers
7
7
V 1 1 H I N Z C
5
X
Unaffected by Reset
4
0
0
0
0
0
CONDITION CODE REGISTER (CCR)
CARRY/BORROW FLAG
ZERO FLAG
NEGATIVE FLAG
INTERRUPT MASK
HALF-CARRY FLAG
TWO’S COMPLEMENT OVERFLOW FLAG
ACCUMULATOR (A)
INDEX REGISTER (H:X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
3
Central Processor Unit (CPU)
2
Advance Information
1
CPU Registers
Bit 0
81
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