參數(shù)資料
型號: MC68HC05G3
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 67/128頁
文件大?。?/td> 290K
代理商: MC68HC05G3
Page 33
Section 4: CPU CORE
MOTOROLA
MC68HC05G3 (705G4) Specification Rev. 1.1
SECTION 4
CPU CORE
4.1
REGISTERS
The MCU contains five registers as shown in Figure 4-1: Programming Model.
Figure 4-1: Programming Model
4.1.1
ACCUMULATOR (A)
The accumulator is a general-purpose 8-bit register used to hold operands and results of
arithmetic calculations or data manipulations.
4.1.2
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 also may be used as a temporary storage area.
4.1.3
PROGRAM COUNTER (PC)
The program counter is a 16-bit register that contains the address of the next byte to be
fetched.
A
70
X
70
HI
N
Z
C
CCR
11
SP
70
PC
15
0
Accumulator
Index Register
Program Counter
Stack Pointer
Condition Code Register
0
15
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