mc68hc05x4dw Freescale Semiconductor, Inc, mc68hc05x4dw Datasheet - Page 28

• Manufacturer Part Number: mc68hc05x4dw
• Description: Xc68hc705x4 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Introduction
CPU Registers
Accumulator
CPU
MC68HC05X4
15
15
0
0
0
0
0
PCH
10
0
This chapter describes the CPU registers and the HC05 instruction set.
Figure 1
memory map.
The accumulator is a general-purpose 8-bit register. The CPU uses the
accumulator to hold operands and results of arithmetic and
non-arithmetic operations.
CARRY/BORROW FLAG
HALF-CARRY FLAG
Freescale Semiconductor, Inc.
INTERRUPT MASK
0
NEGATIVE FLAG
For More Information On This Product,
0
8
ZERO FLAG
Figure 1. Programming Model
shows the five CPU registers. CPU registers are not part of the
7
7
1
7
7
1
Go to: www.freescale.com
6
1
1
5
5
1
H
4
PCL
A
X
CPU
I
SP
N
Z
C
0
0
0
0
0
INDEX REGISTER (X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
CONDITION CODE REGISTER (CCR)
ACCUMULATOR (A)
2--cpu