參數(shù)資料
型號(hào): MC68HC05CT4FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 69/142頁
文件大?。?/td> 624K
代理商: MC68HC05CT4FN
NON-DISCLOSURE
AGREEMENT
REQUIRED
Central Processing Unit
General Release Specification
MC68HC05CT4 Rev. 2.0
32
Central Processing Unit
MOTOROLA
Figure 3-2. Stacking Order
3.3 Accumulator
The accumulator (A) is a general-purpose 8-bit register used to hold
operands and results of arithmetic calculations or data manipulations.
3.4 Index Register
The index register (X) 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.
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
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
A
70
X
70
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