- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1948 > MC68711E20VFNE2 (Freescale Semiconductor)IC MCU 8BIT 52-PLCC PDF資料下載
參數(shù)資料
| 型號： | MC68711E20VFNE2 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 71/138頁 |
| 文件大小： | 0K |
| 描述： | IC MCU 8BIT 52-PLCC |
| 標準包裝： | 23 |
| 系列： | HC11 |
| 核心處理器： | HC11 |
| 芯體尺寸： | 8-位 |
| 速度： | 4MHz |
| 連通性： | SCI，SPI |
| 外圍設(shè)備： | POR，WDT |
| 輸入/輸出數(shù)： | 38 |
| 程序存儲器容量： | 20KB（20K x 8） |
| 程序存儲器類型： | OTP |
| EEPROM 大小： | 512 x 8 |
| RAM 容量： | 768 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x8b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 105°C |
| 封裝/外殼： | 52-LCC（J 形引線） |
| 包裝： | 管件 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁當前第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁
Central Processor Unit (CPU)
MC68HC711D3 Data Sheet, Rev. 2.1
38
Freescale Semiconductor
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.
3.4 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 would be available if the range of
values were restricted to the number able to be expressed in 8-bit binary numbers.
A 4-page opcode map has been implemented to expand the number of instructions. An additional byte,
called a prebyte, directs the processor from page 0 of the opcode map to one of the other three pages.
As its name implies, the additional byte precedes the opcode.
A complete instruction consists of a prebyte, if any, an opcode, and zero, one, two, or three operands.
The operands contain information the CPU needs for executing the instruction. Complete instructions can
be from one to five bytes long.
3.5 Addressing Modes
Six addressing modes can be used to access memory:
1.
Immediate
2.
Direct
3.
Extended
4.
Indexed
5.
Inherent
6.
Relative
These modes are detailed in the following paragraphs. All modes except inherent mode use an effective
address. The effective address is the memory address from which the argument is fetched or stored or
the address from which execution is to proceed. The effective address can be specified within an
instruction, or it can be calculated.
3.5.1 Immediate
In the immediate addressing mode, an argument is contained in the byte(s) immediately following the
opcode. The number of bytes following the opcode matches the size of the register or memory location
being operated on. There are 2-, 3-, and 4- (if prebyte is required) byte immediate instructions. The
effective address is the address of the byte following the instruction.
3.5.2 Direct
In the direct addressing mode, the low-order byte of the operand address is contained in a single byte
following the opcode, and the high-order byte of the address is assumed to be $00. Addresses $00–$FF
are thus accessed directly, using 2-byte instructions. Execution time is reduced by eliminating the
additional memory access required for the high-order address byte. In most applications, this
256-byte area is reserved for frequently referenced data. In M68HC11 MCUs, the memory map can be
configured for combinations of internal registers, RAM, or external memory to occupy these addresses.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68882RC50A | IC COPROCESSOR FLOAT PT 68-PGA |
| MC68908GR16CFJE | IC MCU 16K FLASH 8MHZ SPI 32LQFP |
| MC68E360ZQ25VLR2 | IC MPU QUICC 32BIT 357-PBGA |
| MC68EC000EI8R2 | IC MPU 32BIT 85MHZ 68-PLCC |
| MC68EC030FE25CB1 | IC MPU 32BIT ENH 25MHZ 132-CQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC6875 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:CLOCK GENERATOR/DRIVER (SCHOTTKY MONOLITHIC INTEGRATED CIRCUIT) |
| MC6875A | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:CLOCK GENERATOR/DRIVER (SCHOTTKY MONOLITHIC INTEGRATED CIRCUIT) |
| MC6875AL | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:CLOCK GENERATOR/DRIVER (SCHOTTKY MONOLITHIC INTEGRATED CIRCUIT) |
| MC6875L | 制造商:MOTOROLA 功能描述:IC |
| MC688 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:INTEGRATED CIRCUITS |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。