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參數(shù)資料
| 型號： | MC68HC705C8ACP |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | HCMOS Microcontroller Unit |
| 中文描述： | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 37/108頁 |
| 文件大?。?/td> | 718K |
| 代理商： | MC68HC705C8ACP |
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Instruction Set
MC68HC705KJ1 MC68HRC705KJ1 MC68HLC705KJ1 Data Sheet, Rev. 4.1
Freescale Semiconductor
37
Z — Zero Flag
The CPU sets the zero flag when an ALU operation produces a result of $00.
C — Carry/Borrow Flag
The CPU sets the carry/borrow flag when an addition operation produces a carry out of bit 7 of the
accumulator or when a subtraction operation requires a borrow. Some logical operations and data
manipulation instructions also clear or set the carry/borrow flag.
4.6 Instruction Set
The MCU instruction set has 62 instructions and uses eight addressing modes.
4.6.1 Addressing Modes
The CPU uses eight addressing modes for flexibility in accessing data. The addressing modes provide
eight different ways for the CPU to find the data required to execute an instruction. The eight addressing
modes are:
Inherent
Immediate
Direct
Extended
Indexed, no offset
Indexed, 8-bit offset
Indexed, 16-bit offset
Relative
4.6.1.1 Inherent
Inherent instructions are those that have no operand, such as return-from-interrupt (RTI) and stop
(STOP). Some of the inherent instructions act on data in the CPU registers, such as set carry flag (SEC)
and increment accumulator (INCA). Inherent instructions require no operand address and are one byte
long.
4.6.1.2 Immediate
Immediate instructions are those that contain a value to be used in an operation with the value in the
accumulator or index register. Immediate instructions require no operand address and are two bytes long.
The opcode is the first byte, and the immediate data value is the second byte.
4.6.1.3 Direct
Direct instructions can access any of the first 256 memory locations with two bytes. The first byte is the
opcode, and the second is the low byte of the operand address. In direct addressing, the CPU
automatically uses $00 as the high byte of the operand address.
4.6.1.4 Extended
Extended instructions use three bytes and can access any address in memory. The first byte is the
opcode; the second and third bytes are the high and low bytes of the operand address.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC705C8ACFS | HCMOS Microcontroller Unit |
| MC68HC705C8ACFN | HCMOS Microcontroller Unit |
| MC68HC705C8ACFB | HCMOS Microcontroller Unit |
| MC68HC705C8ACB | HCMOS Microcontroller Unit |
| MC68HC705JJ7S | HCMOS Microcontroller Unit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC705C8ACPB | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC705C8ACPE | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC705C8AFNE | 功能描述:8位微控制器 -MCU HC05 CORE + 8K RAM + EPR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| MC68HC705C8AFU | 制造商:Rochester Electronics LLC 功能描述:8-BIT MCU W/BLANK EPROM - Bulk |
| MC68HC705C8AVFB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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