Power point about Controller

7/24/2019 Power point about Controller

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hsabaghianb @ kashanu.ac.irhsabaghianb @ kashanu.ac.ir MicroprocessorsMicroprocessors1-1-11


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The Silicon Micro System is a pioneer company in manufacturing and

distribution of electronics equipment's in the field of VLSI,

EMBEE, !L" #$T%M#TI%& "%MM$&I"#TI%& S(STEMS

since )**+

The company has - di.isions

Mar/eting

"ustomer support

e.elopment

Training

The company pro.ides technical solutions for .arious fields li/e

Engineering, !olytechnic, Science and $ni.ersity "olleges and total

lab setup


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The 012) Microcontroller


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3eatures of 012) Microcontroller

-1*4 bytes on5chip program memory)60 bytes on5chip data memory0 bit Microcontroller

3our register ban/s%ne microsecond instruction cycle 7ith )6 M89 crystal:6 bidirectional I;% lines organi9ed as four 0 bit portsMultiple mode, high speed programmable serial port

)45bit timers;countersT7o le.el prioriti9ed interrupt structure


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8051 Basic Component

4K bytes internal ROM 128 bytes internal RAM

Four 8-bit I/Oports(P0 - P3!

"#o 1$-bit ti%ers/&ounters

One serialinter'a&e

RAM

I/O

PortTimer

SerialCOMPort

Microcontroller

CPUA single chip

ROM


7/58hsabaghianb @ kashanu.ac.irhsabaghianb @ kashanu.ac.ir MicroprocessorsMicroprocessors1-1-77

Block Diagram

"!$

Interrupt

"ontrol

%S" Bus"ontrol

-/



Other 8051 featurs

only 1On &ip os&illator(e)ternal &rystal

$ interrupt sour&es (2 e)ternal * 3 internal* Reset

$4K e)ternal &o+e(pro,ra% %e%ory(only

rea+P.

$4K e)ternal +ata%e%ory(&an be rea+ an+ #rite

by R*R

o+e %e%ory is sele&table by .A(internal or

e)ternal

e %ay ae .)ternal %e%oryas +ataan+ &o+e


9/58hsabaghianb @ kashanu.ac.irhsabaghianb @ kashanu.ac.ir MicroprocessorsMicroprocessors1-1-

Embedded System(8051 Application

=hat is Embedded System> An e%be++e+ syste% is &losely

inte,rate+ #it te %ain syste% It %ay not intera&t +ire&tly #it te

eniron%ent For e)a%ple A %i&ro&o%puter in a

&ar i,nition &ontrol

#n embedded product uses a microprocessor or microcontroller to do one

tas/only

There is only one application soft7are that is typicallyburned into


10/58hsabaghianb @ kashanu.ac.irhsabaghianb @ kashanu.ac.ir MicroprocessorsMicroprocessors1-1-1!1!

!hree criteria in Choosin" aMicrocontroller

Meetin, te &o%putin, nee+s o' te tas5e6&iently an+ &ost e7e&tiely

spee+* te a%ount o' ROM an+ RAM* te nu%ber o'I/O ports an+ ti%ers* sie* pa&5a,in,* po#er

&onsu%ption easy to up,ra+e &ost per unit

Aailability o' so't#are +eelop%ent tools

asse%blers* +ebu,,ers* &o%pilers* si%ulator*te&ni&al support

i+e aailability an+ reliable sour&es o' te%i&ro&ontrollers



8051 Internal Block Diagram8051 Internal Block Diagram



8051

SchematicPin out



8051

Foot Print

1

2

3

5

!

"

8

#

10

11

12

13

1

15

1!

1"

18

1#

20

0

3#

38

3"

3!

35

3

33

32

31

30

2#

28

2"

2!

25

2

23

22

21

P1$0

P1$1

P1$2

P1$3

P1$

P1$5

P1$!

P1$"

%&'

(%)D*P3$0

(')D*P3$1

('0*P3$

('1*P3$5

)'A+2

)'A+1

,-D

(I-'0*P3$2

(I-'1*P3$3

(%D*P3$"

(.%*P3$!

cc

P0$0(AD0

*P0$1(AD1*

P0$2(AD2

*P0$3(AD3*

P0$(AD*

P0$5(AD5*

P0$!(AD!*

P0$"(AD"*

EA/PP

A+E/P%,

P&E-

P2$"(A15*

P2$!(A1

*P2$5(A13

*P2$(A12

*P2$3(A11*

P2$2(A10*

P2$1(A#*

P2$0(A8*

8051(8031*

(8"51*

(8#51*



IMPORTANT PINS IO Port!"IMPORTANT PINS IO Port!"

ne o te most useul eatures o te 8051 is tat it containsour I/ ports (P0 P3*

Port 0Port 0 pins 32-39pins 32-39 P0P0 P0!0P0!0 P0!:P0!: 8-bit R/ - ;eneral Purpose I/O8-bit R/ - ;eneral Purpose I/O OrOra&ts as a %ultiple)e+ lo# bytea&ts as a %ultiple)e+ lo# byte a++ressa++ressan+an+ +ata+atabus 'orbus 'or e)ternale)ternal

%e%ory +esi,n%e%ory +esi,n

Port 1Port 1 pins 1-8pins 1-8 P1P1 P1!0P1!0 P1!:P1!: OnlyOnly8-bit R/ - ;eneral Purpose I/O8-bit R/ - ;eneral Purpose I/O

Port 2Port 2 pins 21-28pins 21-28 P2P2 P2!0P2!0 P2!:P2!: 8-bit R/ - ;eneral Purpose I/O8-bit R/ - ;eneral Purpose I/O OrOri,i,byte o' tebyte o' te a++ressa++ressbus 'or e)ternal %e%ory +esi,nbus 'or e)ternal %e%ory +esi,n

Port 3Port 3 pins 10-1:pins 10-1: P3P3 P3!0P3!0 P3!:P3!: ;eneral Purpose I/O;eneral Purpose I/O i' not usin, any o' te internal periperals (ti%ers or e)ternali' not usin, any o' te internal periperals (ti%ers or e)ternal

interrupts!interrupts!

Eac port can 4e used as input or output (4idirection*



Port # Alternate Function!



IMPORTANT PINSIMPORTANT PINS

PSENPSEN(out



Pin! o$ 8051

@&& pin 40@&& proi+es supply olta,e to te &ip!"e olta,e sour&e is B@!

; pin 20 ,roun+

C"A=1 an+ C"A=2 pins 19*18"ese 2 pins proi+e e)ternal &lo&5!

ay 1 usin, a Duart &rystal os&illatoray 2 usin, a ""= os&illator.)a%ple 4-1 so#s te relationsipbet#een C"A= an+ te %a&ine &y&le!



Ma&ine &y&le

Fin+ te %a&ine &y&le 'or

(a C"A= E 11!0B92 M

(b C"A= E 1$ M!

Solution:

(a 11!0B92 M / 12 E 921!$ 5G

%a&ine &y&le E 1 / 921!$ 5 E 1!08B s

(b 1$ M / 12 E 1!333 MG

%a&ine &y&le E 1 / 1!333 M E 0!:B s



Pin! o$ 8051

R" pin 9 reset input pin an+ a&tie i, nor%ally lo# !

"e i, pulse %ust be i, at least 2

%a&ine &y&les! po#er-on reset! >pon applyin, a i, pulse to R"* te%i&ro&ontroller #ill reset an+ all aluesin re,isters #ill be lost!


20/58hsabaghianb @ kashanu.ac.irhsabaghianb @ kashanu.ac.ir MicroprocessorsMicroprocessors1-1-2!2!

Pin! o$ 8051

;E#pin :) e?ternal access There is no on5chip



Pin! o$ 8051

#LEpin :1 address latch enable It is an output pin and is acti.e high

012) port 1 pro.ides both address and data

The #LE pin is used for de5multiple?ing theaddress and data by connecting to the @ pin of the+-LS:+: latch



Address Multiple#in"for E#ternal Memory

Figure 2-7

Multiple)in, te

a++ress

(lo#-bytean+ +ata

bus



Address Multiple#in"for E#ternal Memory

Figure 2-8

A&&essin,e)ternal

&o+e%e%ory


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Accessin" E#ternal$ata Memory

Figure2-11

Inter'a&e to 1K

RAM


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E#ternal code memory


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E#ternal data memory

012)


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O%erlappin" E#ternal Codeand $ata Spaces


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O%erlappin" E#ternal Codeand $ata Spaces

Allo&s the 'AM to be

&ritten as data memory and

read as data memory as &ell as co%e memor&)

!his allo&s a pro"ram to be

do&nloaded from outside into the 'AM as data and

e#ecutedfrom 'AM as code)


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On*Chip Memory+nternal 'AM


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hsabaghianb @ kashanu.ac.irhsabaghianb @ kashanu.ac.ir MicroprocessorsMicroprocessors1-1-3!3!

'e"isters

1+14121-1:161)11


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Special ,unction 'e"isters

$A!A re"isters

CO!'O2 re"isters

!imersSerial ports+nterrupt systemAnalo" to $i"ital con%erter

$i"ital to Analo" con%erterEtc)

Addresses 80h 3 ,,h

$irect Addressin" usedto access S4's


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Acti%e ban- selected by 4S 6RS1'RS07 bit

4ermits fast conte#t s&itchin"9 in interrupt

ser%ice routines (+S')

'e"ister Ban-s


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8051 C4: 'e"isters

A (AccumulatorB4S (4ro"ram Status ordS4 (Stac- 4ointer4C (4ro"ram Counter$4!'($ata 4ointer

:sed in assemblerinstructions


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Regi!ter!

A

(

R!

R1

R3

R4

R2

R5

R7

R6

DP) DP"

PC

DPTR

PC

Some 8!51 16-*it Re+i,ter

Some 8-*it Re+i,ter,

o t.e 8!51


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!he 8051

Assembly 2an"ua"e


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O%er%ie&

ata trans'er instru&tions

A++ressin, %o+es

ata pro&essin, (arit%eti& an+ lo,i&

Pro,ra% Ho# instru&tions


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$ata !ransfer +nstructions

MO@ +est* sour&e +est sour&e ta&5 instru&tions

PUSH byte ;increment stack pointer,;move byte on stack

POP byte ;move from stack to byte,

;decrement stack pointer .)&an,e instru&tions

XCH a, byte;exchange accumulator and byte

XCHD a, byte ;exchange low nibbles of;accumulator and byte


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Addressin" Modes

I%%e+iate Mo+e spe&i'y +ata by its alue

mov A, #0 ;put 0 in the accumulator

;A = 00000000

mov R4, #11h ;put 11hex in the R register ;R = 00010001

mov B, #11 ;put 11 decimal in b register

;! = 00001011

mov DPTR,#7521h ;put "#$1 hex in %&'R ;%&'R = 0111010100100001


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Addressin" Modes

I%%e+iate Mo+e &ontinue

MO DPTR,#7521h()* %&+,$1-

()* %&-, "#


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Addressin" Modes

Re,ister A++ressin, eiter sour&e or +estination is one o'P> re,ister

MO R0,AMO A,R7

ADD A,R4

ADD A,R7

MO DPTR,#25!5H

MO R5,DP"

MO R,DPH

otethatMO R4,R7$% $&'o((e't


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Addressin" Modes

ire&t Mo+e spe&i'y +ata by its 8-bit a++ress

>sually 'or 30-:F o' RAMMov a, 70h ) 'o*y 'o&te&t% o+ RAM at 70h to a

Mov R0,40h ) 'o*y 'o&te&t% o+ RAM at 70h to a

Mov 5h,a ) *-t 'o&te&t% o+ a at 5h to a

Mov 0D0h,a ) *-t 'o&te&t% o+ a $&to PS.


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Addressin" Modes

Re,ister In+e)e+ Mo+e sour&e or +estination a++ress iste su% o' te base a++ress an+ tea&&u%ulator(In+e)

Jase a++ress &an be P"R or Pmov *t(, #4000h

mov a, #5

mov' a, a 9 *t( ;a (.00#/


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Acc 'e"ister

Are,ister &an be a&&esse+ by +ire&tan+ re,ister%o+e

"is 3 instru&tion as sa%e'un&tion #it +i7erent&o+e

0703 :500 mov a,00h

0705 ;500:0 mov a'',00h

070; ;500:0 mov 0e0h,00h

Also tis 3 instru&tion070B :8 mov a,(1070C ;8:0 mov a'',(1

070: ;8:0 mov 0e0h,(1


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E#chan"e +nstructions

t#o #ay +ata trans'erXCH a, 30h ) a M306

XCH a, R0 ) a R0

XCH a, R0 ) a MR06

XCHD a, R0 ) e'ha&e $$t

R0."/ R0.0/a."/ a.0/

%nly - bits e?changed


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ata Pro&essin,

Instru&tionsArit%eti& Instru&tions

=o,i& Instru&tions


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Arit%eti& Instru&tions

A++

ubtra&t

In&re%ent

e&re%ent Multiply

ii+e

e&i%al a+ust


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Arit%eti& Instru&tions

Mnemonic De!cri(tion

A%% A, byte add A to byte put result in A

A%%2 A, byte add &ith carry

34!! A, byte subtract &ith borro&

562 A increment A

562 byte increment byte in memory

562 %&'R increment data pointer

%72 A decrement accumulator

%72 byte decrement byte(4+ A! multiply accumulator by b re"ister

%5* A! di%ide accumulator by b re"ister

%A A decimal ad;ust the accumulator


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A Instru&tions

add a, byte ; a a 8 byteaddc a, byte ; a a 8 byte 8 2

"ese instru&tions a7e&t 3 bits in P

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