单片机英文参考文献.pdf

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1、Structure and function of the MCS-51 series Structure and function of the MCS-51 series one-chip computer MCS-51 is a name of a piece of one-chip computer series which Intel Company produces.This company introduced 8 top-grade one-chip computers of MCS-51 series in 1980 after introducing 8 one-chip

2、computers of MCS-48 series in 1976.It belong to a lot of kinds this line of one-chip computer the chips have,such as 8051,8031,8751,80C51BH,80C31BH,etc.,their basic composition,basic performance and instruction system are all the same.8051 daily representatives-51 serial one-chip computers.An one-ch

3、ip computer system is made up of several following parts:(1)One microprocessor of 8(CPU).(2)At slice data memory RAM(128B/256B),it use not depositting not can reading/data that write,such as result not middle of operation,final result and data wanted to show,etc.(3)Procedure memory ROM/EPROM(4KB/8KB

4、),is used to preserve the procedure,some initial data and form in slice.But does not take ROM/EPROM within some one-chip computers,such as 8031,8032,80C,etc.(4)Four 8 run side by side I/O interface P0 four P3,each mouth can use as introduction,may use as exporting too.(5)Two timer/counter,each timer

5、/counter may set up and count in the way,used to count to the external incident,can set up into a timing way too,and can according to count or result of timing realize the control of the computer.(6)Five cut off cutting off the control system of the source.(7)One all duplexing serial I/O mouth of UA

6、RT(universal asynchronous receiver/transmitter(UART),is it realize one-chip computer or one-chip computer and serial communication of computer to use for.(8)Stretch oscillator and clock produce circuit,quartz crystal finely tune electric capacity need outer.Allow oscillation frequency as 12 megahert

7、as now at most.Every the above-mentioned part was joined through the inside data bus.Among them,CPU is a core of the one-chip computer,it is the control of the computer and command centre,made up of such parts as arithmetic unit and controller,etc.The arithmetic unit can carry on 8 persons of arithm

8、etic operation and unit ALU of logic operation while including one,the 1 storing device temporarilies of 8,storing device 2 temporarily,8s accumulation device ACC,register B and procedure state register PSW,etc.Person who accumulate ACC count by 2 input ends entered of checking etc.temporarily as on

9、e operation often,come from person who store 1 operation is it is it make operation to go on to count temporarily,operation result and loopback ACC with another one.In addition,ACC is often regarded as the transfer station of data transmission on 8051 inside.The same as general microprocessor,it is

10、the busiest register.Help remembering that agreeing with A expresses in the order.The controller includes the procedure counter,the order is depositted,the order decipher,the oscillator and timing circuit,etc.The procedure counter is made up of counter of 8 for two,amounts to 16.It is a byte address

11、 counter of the procedure in fact,the content is the next IA that will carried out in PC.The content which changes it can change the direction that the procedure carries out.Shake the circuit in 8051 one-chip computers,only need outer quartz crystal and frequency to finely tune the electric capacity

12、,its frequency range is its 12MHZ of 1.2MHZ.This pulse signal,as 8051 basic beats of working,namely the minimum unit of time.8051 is the same as other computers,the work in harmony under the control of the basic beat,just like an orchestra according to the beat play that is commanded.There are ROM(p

13、rocedure memory,can only read)and RAM in 8051 slices(data memory,can is it can write)two to read,they have each independent memory address space,dispose way to be the same with general memory of computer.Procedure 8051 memory and 8751 slice procedure memory capacity 4KB,address begin from 0000H,used

14、 for preserving the procedure and form constant.Data 8051-8751 8031 of memory data memory 128B,address false 00FH,use for middle result to deposit operation,the data are stored temporarily and the data are buffered etc.In RAM of this 128B,there is unit of 32 byteses that can be appointed as the job

15、register,this and general microprocessor is different,8051 slice RAM and job register rank one formation the same to arrange the location.It is not very the same that the memory of MCS-51 series one-chip computer and general computer disposes the way in addition.General computer for first address sp

16、ace,ROM and RAM can arrange in different space within the range of this address at will,namely the addresses of ROM 文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3

17、S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4

18、S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:

19、CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 H

20、W3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 Z

21、Y4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编

22、码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4and RAM,with dis

23、tributing different address space in a formation.While visiting the memory,corresponding and only an address Memory unit,can ROM,it can be RAM too,and by visiting the order similarly.This kind of memory structure is called the structure of Princeton.8051 memories are divided into procedure memory sp

24、ace and data memory space on the physics structure,there are four memory spaces in all:The procedure stores in one and data memory space outside data memory and one in procedure memory space and one outside one,the structure forms of this kind of procedure device and data memory separated form data

25、memory,called Harvard structure.But use the angle from users,8051 memory address space is divided into three kinds:(1)In the slice,arrange blocks of FFFFH,0000H of location,in unison outside the slice(use 16 addresses).(2)The data memory address space outside one of 64KB,the address is arranged from

26、 0000H 64KB FFFFH(with 16 addresses)too to the location.(3)Data memory address space of 256B(use 8 addresses).Three above-mentioned memory space addresses overlap,for distinguishing and designing the order symbol of different data transmission in the instruction system of 8051:CPU visit slice,ROM or

27、der spend MOVC,visit block RAM order uses MOVX outside the slice,RAM order uses MOV to visit in slice.8051 one-chip computer have four 8 walk abreast I/O port,call P0,P1,P2 and P3.Each port is 8 accurate two-way mouths,accounts for 32 pins altogether.Every one I/O line can be used as introduction an

28、d exported independently.Each port includes a latch(namely special function register),one exports the driver and a introduction buffer.Make data can latch when outputting,data can buffer when making introduction,but four function of passway these self-same.Expand among the system of memory outside h

29、aving slice,four port these may serve as accurate two-way mouth of I/O in common use.Expand among the system of memory outside having slice,P2 mouth see high 8 address off;P0 mouth is a two-way bus,send the introduction of 8 low addresses and data/export in timesharing Output grade,P3 of mouth,P1 of

30、 P1,connect with inside have load resistance of drawing,every one of they can drive 4 Model LS TTL load to output.As while inputting the mouth,any TTL or NMOS circuit can drive P1 of 8051 one-chip 文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S

31、4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S

32、7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:C

33、Y7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW

34、3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY

35、4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码

36、:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3

37、HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4computers as P3 mouth in a normal way.Because draw resistance on output grade of them have,can open a way collector too or drain-source resistance is it urge to open a way,do not need to have the resistance of drawing outerly.Mouths ar

38、e all accurate two-way mouths too.When the conduct is input,must write the corresponding port latch with 1 first.As to 80C51 one-chip computer,port can only offer milliampere of output electric currents,is it output mouth go when urging one ordinary basing of transistor to regard as,should contact a

39、 resistance among the port and transistor base,in order to the electricity while restraining the high level from exporting P1P3 Being restored to the throne is the operation of initializing of an one-chip computer.Its main function is to turn PC into 0000H initially,make the one-chip computer begin

40、to hold the conduct procedure from unit 0000H.Except that the ones that enter the system are initialized normally,as because procedure operate it make mistakes or operate there arent mistake,in order to extricate oneself from a predicament,need to be pressed and restored to the throne the key restar

41、ting too.It is an input end which is restored to the throne the signal in 8051 China RST pin.Restore to the throne signal high level effective,should sustain 24 shake cycle(namely 2 machine cycles)the above its effective times.If 6 of frequency of utilization brilliant to shake,restore to the throne

42、 signal duration should exceed 4 delicate to finish restoring to the throne and operating.Produce the logic picture of circuit which is restored to the throne the signal:Restore to the throne the circuit and include two parts outside in the chip entirely.Outside that circuit produce to restore to th

43、e throne signal(RST)hand over to Schmitts trigger,restore to the throne circuit sample to output,Schmitt of trigger constantly in each S5P2,machine of cycle in having one more,then just got and restored to the throne and operated the necessary signal insidly.Restore to the throne resistance of circu

44、it generally,electric capacity parameter suitable for 6 brilliant to shake,can is it restore to the throne signal high level duration greater than 2 machine cycles to guarantee.Being restored to the throne in the circuit is simple,its function is very important.Pieces of one-chip computer system cou

45、ld normal running,should first check it can restore to the throne not succeeding.Checking and can pop ones head and monitor the pin with the oscillograph tentatively,push and is restored to the 文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6

46、A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9

47、M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R

48、8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4

49、E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7

50、V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY7R8N8Y5P3 HW3S4E6A7V10 ZY4S7V9M6R4文档编码:CY