參數(shù)資料
型號(hào): MC68HC05L16CFU
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, QFP-80
文件頁數(shù): 76/146頁
文件大?。?/td> 852K
代理商: MC68HC05L16CFU
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
Freescale Semiconductor
35
Chapter 3
Central Processor Unit (CPU)
3.1 Introduction
This section describes the central processor unit (CPU).
3.2 CPU Registers
The MCU contains five registers as shown in Figure 3-1. The interrupt stacking order is shown in
Figure 3-1. Programming Model
Figure 3-2. Stacking Order
A
70
X
70
HI
N
Z
C
CCR
11
SP
70
PC
15
0
ACCUMULATOR
INDEX REGISTER
PROGRAM COUNTER
STACK POINTER
CONDITION CODE
0
15
0
REGISTER
INDEX REGISTER
PCL
ACCUMULATOR
CONDITION CODE
PCH
11
1
70
STACK
I
N
T
E
R
U
P
T
DECREASING
UNSTACK
R
E
T
U
R
N
INCREASING
NOTE:
Since the stack pointer decrements during pushes, the PCL is stacked first,
followed by PCH, etc. Pulling from the stack is in the reverse order.
MEMORY
ADDRESSES
MEMORY
ADDRESSES
REGISTER
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