參數(shù)資料
型號(hào): MC68HC05X4CDW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Microcontroller Unit
中文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 28/156頁
文件大?。?/td> 926K
代理商: MC68HC05X4CDW
CPU
MC68HC05X4
28
CPU
MOTOROLA
Introduction
This chapter describes the CPU registers and the HC05 instruction set.
CPU Registers
Figure 1
shows the five CPU registers. CPU registers are not part of the
memory map.
Accumulator
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.
Figure 1. Programming Model
ACCUMULATOR (A)
A
INDEX REGISTER (X)
X
SP
1
1
0
0
0
0
0
0
0
0
PCL
PCH
Z
C
I
N
1
H
1
1
0
4
7
5
CONDITION CODE REGISTER (CCR)
PROGRAM COUNTER (PC)
STACK POINTER (SP)
0
7
8
15
15
5
7
7
0
0
0
HALF-CARRY FLAG
INTERRUPT MASK
NEGATIVE FLAG
ZERO FLAG
CARRY/BORROW FLAG
10
6
2--cpu
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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