參數(shù)資料
型號(hào): MC68HC05P4A
廠商: Motorola, Inc.
英文描述: 28-pin MCU (microcontroller unit) based on the MC68HC05P4(28引腳、基于MC68HC05P4升級(jí)的8位微控制器單元)
中文描述: 28引腳單片機(jī)(微控制器)的基礎(chǔ)上MC68HC05P4(28引腳,基于MC68HC05P4升級(jí)的8位微控制器單元)
文件頁(yè)數(shù): 31/102頁(yè)
文件大小: 930K
代理商: MC68HC05P4A
MC68HC05P4A — Rev. 6.0
Advance Information
MOTOROLA
Central Processor Unit (CPU)
31
Advance Information — MC68HC05P4A
Section 3. Central Processor Unit (CPU)
3.1 Contents
3.2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
3.3
Accumulator (A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
3.4
Index Register (X). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
3.5
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
Condition Code Register (CCR) . . . . . . . . . . . . . . . . . . . . . . . .32
H — Half Carry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
I — Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
N — Negative. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Z — Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
C — Carry/Borrow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
3.6
Stack Pointer (SP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
3.7
Program Counter (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
3.2 Introduction
This section describes the five CPU registers. CPU registers are not part
of the memory map.
3.3 Accumulator (A)
The accumulator is a general-purpose 8-bit register used to hold
operands and results of arithmetic calculations or data manipulations.
7
0
A
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