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參數(shù)資料
| 型號： | MC68HC05C5P |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁數(shù)： | 16/58頁 |
| 文件大小： | 166K |
| 代理商： | MC68HC05C5P |
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Page 17
Section 4: CPU Core
MOTOROLA
MC68HC05C5 Specification Rev. 1.2
4.1.5.5
Carry/Borrow (C)
When set, this bit indicates that a carry or borrow out of the arithmetic logical unit (ALU)
occurred during the last arithmetic operation. This bit is also affected during bit test and
branch instructions and during shifts and rotates.
4.2
INSTRUCTION SET
The MCU has a set of 62 basic instructions. They can be divided into five different types:
register/memory, read-modify-write, branch, bit manipulation, and control. The following
paragraphs briefly explain each type. For more information on the instruction set, refer to
the
M6805 Family User’s Manual (M6805UM/AD2) or the MC68HC05C4 Technical Data
(MC68HC05C4/D).
4.2.1
REGISTER/MEMORY INSTRUCTIONS
Most of these instructions use two operands. One operand is either the accumulator or
the index register. The other operand is obtained from memory using one of the
addressing modes. The jump unconditional (JMP) and jump to subroutine (JSR)
instructions have no register operand. Refer to the following instruction list.
Multiply
Function
Load A from Memory
Load X from Memory
Store A in Memory
Store X in Memory
Add Memory to A
Add Memory and Carry to A
Subtract Memory
Subtract Memory from A with Borrow
AND Memory to A
OR Memory with A
Exclusive OR Memory with A
Arithmetic compare A with Memory
Arithmetic Compare X with Memory
Bit Test Memory with A (Logical Compare)
Jump Unconditional
Jump to Subroutine
Mnemonic
LDA
LDX
STA
STX
ADD
ADC
SUB
SBC
AND
ORA
EOR
CMP
CPX
BIT
JMP
JSR
MUL
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