參數(shù)資料
型號: MC68HC705C9AFB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, QFP-44
文件頁數(shù): 121/177頁
文件大?。?/td> 1941K
代理商: MC68HC705C9AFB
Central Processor Unit (CPU)
Advance Information
MC68HC705C9A — Rev. 4.0
48
Central Processor Unit (CPU)
MOTOROLA
Figure 3-1. Programming Model
Figure 3-2. Interrupt Stacking Order
3.3.1 Accumulator (A)
The accumulator is a general-purpose 8-bit register used to hold
operands and results of arithmetic calculations or data manipulations.
3.3.2 Index Register (X)
The index register is an 8-bit register used for the indexed addressing
value to create an effective address. The index register may also be
used as a temporary storage area.
A
70
X
70
HI
N
Z
C
CCR
11
SP
7
0
PC
15
0
ACCUMULATOR
INDEX REGISTER
PROGRAM COUNTER
STACK POINTER
CONDITION CODE REGISTER
0
15
0
INDEX REGISTER
PCL
ACCUMULATOR
CONDITION CODE REGISTER
PCH
11
1
70
STACK
I
N
T
E
R
U
P
T
DECREASING
UNSTACK
R
E
T
U
R
N
INCREASING
MEMORY
ADDRESSES
MEMORY
ADDRESSES
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