MC68HC05P18A Datasheet, PDF (34/130 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Central Processor Unit (CPU)
3.3 CPU Registers
Figure 3-1 shows the five CPU registers. CPU registers are not part of
the memory map.
A
ACCUMULATOR (A)
7
X
0
INDEX REGISTER (X)
15
65
0000000011
SP
0
STACK POINTER (SP)
15
10
87
0
00
PCH
PCL
PROGRAM COUNTER (PC)
7
54
0
1 1 1 H I N Z C CONDITION CODE REGISTER (CCR)
HALF-CARRY FLAG
INTERRUPT MASK
NEGATIVE FLAG
ZERO FLAG
CARRY/BORROW FLAG
Figure 3-1. Programming Model
Technical Data
Central Processor Unit (CPU)
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MC68HC05P18A