1 accumulator (a), Accumulator (a), Cpu registers – Freescale Semiconductor MC68HC08KH12 User Manual
Page 53: Figure 6-2. accumulator (a)
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MC68HC(7)08KH12
—
Rev. 1.1
Advance Information
Freescale Semiconductor
53
Figure 6-1. CPU Registers
6.4.1 Accumulator (A)
The accumulator is a general-purpose 8-bit register. The CPU uses the
accumulator to hold operands and the results of arithmetic/logic
operations.
ACCUMULATOR (A)
INDEX REGISTER (H:X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
CONDITION CODE REGISTER (CCR)
CARRY/BORROW FLAG
ZERO FLAG
NEGATIVE FLAG
INTERRUPT MASK
HALF-CARRY FLAG
TWO’S COMPLEMENT OVERFLOW FLAG
V 1 1 H I N Z C
H
X
0
0
0
0
7
15
15
15
7
0
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Write:
Reset:
Unaffected by reset
Figure 6-2. Accumulator (A)
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