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| 型號： | MC68HC11ED0VFU2 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 2 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | QFP-44 |
| 文件頁數(shù)： | 34/108頁 |
| 文件大小： | 1672K |
| 代理商： | MC68HC11ED0VFU2 |
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Central Processor Unit (CPU)
Data Types
MC68HC11ED0 — Rev. 1.0
Technical Summary
Central Processor Unit (CPU)
before the interrupt occurred. The X interrupt mask bit is set only by
hardware (RESET or XIRQ acknowledge). X is cleared only by program
instruction (TAP, where the associated bit of A is 0; or RTI, where bit 6
of the value loaded into the CCR from the stack has been cleared).
There is no hardware action for clearing X.
3.3.6.8 STOP Disable (S)
Setting the STOP disable (S) bit prevents the STOP instruction from
putting the M68HC11 into a low-power stop condition. If the STOP
instruction is encountered by the CPU while the S bit is set, it is treated
as a no-operation (NOP) instruction, and processing continues to the
next instruction. S is set by reset; STOP is disabled by default.
3.4 Data Types
The M68HC11 CPU supports four data types:
1. Bit data
2. 8-bit and 16-bit signed and unsigned integers
3. 16-bit unsigned fractions
4. 16-bit addresses
A byte is eight bits wide and can be accessed at any byte location. A
word is composed of two consecutive bytes with the most significant
byte at the lower value address. Because the M68HC11 is an 8-bit CPU,
there are no special requirements for alignment of instructions or
operands.
3.5 Opcodes and Operands
The M68HC11 Family of microcontrollers uses 8-bit opcodes. Each
opcode identifies a particular instruction and associated addressing
mode to the CPU. Several opcodes are required to provide each
instruction with a range of addressing capabilities. Only 256 opcodes
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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| MC68HC11ED0VFN2 | 8-BIT, 2 MHz, MICROCONTROLLER, PQCC44 |
| MC68HC11ED0VFN3 | 8-BIT, 3 MHz, MICROCONTROLLER, PQCC44 |
| MC68HC11ED0MFU3 | 8-BIT, 3 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC11ED0CFU3 | 8-BIT, 3 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC11ED0MP2 | 8-BIT, 2 MHz, MICROCONTROLLER, PDIP40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC11ED0VFU3 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Technical Summary |
| MC68HC11ED0VP2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Technical Summary |
| MC68HC11ED0VP3 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Technical Summary |
| MC68HC11EX | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:APPENDIX A ELECTRICAL CHARACTERISTICS |
| MC68HC11EXC | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:APPENDIX A ELECTRICAL CHARACTERISTICS |
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