參數(shù)資料
型號(hào)： MC68HC705J1ACP
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： Microcontrollers
中文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20
封裝： PLASTIC, DIP-20
文件頁(yè)數(shù)： 37/108頁(yè)
文件大?。?/td> 718K
代理商： MC68HC705J1ACP
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
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705J1ACPE 功能描述:8位微控制器 -MCU HCO5 CORE+1.2K 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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
MC68HC705J2CDW 制造商:Motorola Inc 功能描述: 制造商:Motorola Inc 功能描述:MicroController, 8-Bit, 20 Pin, Plastic, SOP
MC68HC705J2DW 制造商:Motorola Inc 功能描述:
MC68HC705J5ACP 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:
MC68HC705JB4DW 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:
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