XC68HC705JJ7 Motorola, XC68HC705JJ7 Datasheet - Page 46
XC68HC705JJ7
Manufacturer Part Number
XC68HC705JJ7
Description
MICROCONTROLLER
Manufacturer
Motorola
Datasheet
1.XC68HC705JJ7.pdf
(242 pages)
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Part Number:
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Manufacturer:
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Central Processor Unit (CPU)
3.3 Accumulator
Advance Information
46
The accumulator is a general-purpose 8-bit register as shown in
Figure
of arithmetic and non-arithmetic operations.
Reset:
Read:
Write:
15
15
0
1
0
1
3-2. The CPU uses the accumulator to hold operands and results
0
1
Bit 7
0
Central Processor Unit (CPU)
Figure 3-1. M68HC05 Programming Model
0
PCH
10
0
6
CARRY/BORROW FLAG
0
Figure 3-2. Accumulator (A)
HALF-CARRY FLAG
INTERRUPT MASK
NEGATIVE FLAG
0
8
ZERO FLAG
7
7
1
7
7
1
5
6
1
1
5
5
1
Unaffected by reset
MC68HC705JJ7 • MC68HC705JP7 — REV 4
4
H
4
PCL
A
X
I
SP
N
3
Z
C
0
0
0
0
0
INDEX REGISTER (X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
CONDITION CODE REGISTER (CCR)
ACCUMULATOR (A)
2
1
MOTOROLA
Bit 0
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