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參數(shù)資料
| 型號(hào)： | MC68HC11A8BCP2 |
| 廠商： | MOTOROLA INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | HCMOS Single-Chip Microcontroller |
| 中文描述： | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48 |
| 封裝： | DIP-48 |
| 文件頁(yè)數(shù)： | 101/158頁(yè) |
| 文件大小： | 776K |
| 代理商： | MC68HC11A8BCP2 |
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MC68HC11A8
TECHNICAL DATA
CPU, ADDRESSING MODES, AND INSTRUCTION SET
MOTOROLA
10-3
10
10.1.6.1 Carry/Borrow (C)
The C bit is set if there was a carry or borrow out of the arithmetic logic unit (ALU) dur-
ing the last arithmetic operation. The C bit is also affected during shift and rotate in-
structions.
10.1.6.2 Overflow (V)
The overflow bit is set if there was an arithmetic overflow as a result of the operation;
otherwise, the V bit is cleared.
10.1.6.3 Zero (Z)
The zero bit is set if the result of the last arithmetic, logic, or data manipulation opera-
tion was zero; otherwise, the Z bit is cleared.
10.1.6.4 Negative (N)
The negative bit is set if the result of the last arithmetic, logic, or data manipulation op-
eration was negative; otherwise, the N bit is cleared. A result is said to be negative if
its most significant bit is a one.
10.1.6.5 Interrupt Mask (I)
The I interrupt mask bit is set either by hardware or program instruction to disable
(mask) all maskable interrupt sources (both external and internal).
10.1.6.6 Half Carry (H)
The half carry bit is set to a logic one when a carry occurs between bits 3 and 4 of the
arithmetic logic unit during an ADD, ABA, or ADC instruction; otherwise, the H bit is
cleared.
10.1.6.7 X Interrupt Mask (X)
The X interrupt mask bit is set only by hardware (RESET or XIRQ acknowledge); and
it is cleared only by program instruction (TAP or RTI).
10.1.6.8 Stop Disable (S)
The stop disable bit is set to disable the STOP instruction, and cleared to enable the
STOP instruction. The S bit is program controlled. The STOP instruction is treated as
no operation (NOP) if the S bit is set.
10.2 Addressing Modes
Six addressing modes can be used to reference memory; they include: immediate, di-
rect, extended, indexed (with either of two 16-bit index registers and an 8-bit offset),
inherent and relative. Some instructions require an additional byte before the opcode
to accommodate a multi-page opcode map; this byte is called a prebyte.
The following paragraphs provide a description of each addressing mode plus a dis-
cussion of the prebyte. In these descriptions the term effective address is used to in-
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC11A8BMP2 | HCMOS Single-Chip Microcontroller |
| MC68HC11A8BVP2 | HCMOS Single-Chip Microcontroller |
| MC68HC11A1CFN2 | HCMOS Single-Chip Microcontroller |
| MC68HCP11A1CFN2 | HCMOS Single-Chip Microcontroller |
| MC68HCP11A1CFN3 | HCMOS Single-Chip Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC11A8BMP2 | 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
| MC68HC11A8BVP2 | 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
| MC68HC11A8FN | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:8-Bit Microcontrollers |
| MC68HC11A8FN1 | 制造商:Motorola Inc 功能描述: |
| MC68HC11A8MCFN2 | 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
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