Freescale Semiconductor, Inc.
Central Processor Unit (CPU)
CPU Registers
8.4 CPU Registers
Figure 8-1 shows the five CPU registers. CPU registers are not part of
the memory map.
7
0
0
0
0
0
ACCUMULATOR (A)
15
15
15
H
X
INDEX REGISTER (H:X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
7
V 1
1
H
I
N Z C CONDITION CODE REGISTER (CCR)
CARRY/BORROW FLAG
ZERO FLAG
NEGATIVE FLAG
INTERRUPT MASK
HALF-CARRY FLAG
TWO’S COMPLEMENT OVERFLOW FLAG
Figure 8-1. CPU Registers
MC68HC908AS60 — Rev. 1.0
Technical Data
Central Processor Unit (CPU)
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