參數(shù)資料
型號: MC68HC05E6VFB
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 126/140頁
文件大?。?/td> 1141K
代理商: MC68HC05E6VFB
Central Processing Unit
MC68HC05E6 — Rev. 1.0
86
Central Processing Unit
MOTOROLA
Introduction
This chapter describes the CPU registers and the HC05 instruction set.
CPU Registers
Figure 23 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 23 Programming Model
ACCUMULATOR (A)
A
INDEX REGISTER (X)
X
SP
11
00
0
00
0
PCL
PCH
ZC
IN
1H
11
0
4
75
CONDITION CODE REGISTER (CCR)
PROGRAM COUNTER (PC)
STACK POINTER (SP)
0
7
8
15
5
7
0
HALF-CARRY FLAG
INTERRUPT MASK
NEGATIVE FLAG
ZERO FLAG
CARRY/BORROW FLAG
10
6
2-cpu
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