Atmel C51 manuels

Atmel C51 Manuel d'utilisateur (27 pages)

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Table des matières

User Guide

1

4119C–8051–3/03

3

Section 1

5

Introduction

5

1.4 Demo Board

6

Features

6

Section 2

7

Hardware Description

7

2.4 Board Supply

8

Considerations

8

2.5 Board Layout n On-Off

9

Page Mode

10

Non Page Mode

10

Table 2. J9 Switches

11

Table 3. J16 Switches

11

Section 3

13

Operation Mode

13

3.2 ISP External

14

Flash Memory

14

Section 4

19

Bill of Material

19

Section 5

21

Schematics

21

Printed on recycled paper

27

Atmel C51 Manuel (116 pages)

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Table des matières

Atmel 8051 Microcontrollers

1

Hardware Manual

1

Table of Contents

2

Section 1

3

1.2 Addressing

4

1.3 Arithmetic

6

1.4 Logical

7

1.5 Data Transfers

8

The 8051 Instruction Set

10

1.6 External RAM

11

1.7 Lookup Tables

11

1.8 Boolean

12

Instructions

12

C= bit1 XRL bit2

13

MOV C, bit1

13

JNB bit2, OVER

13

OVER: (continue)

13

1.9 Jump

14

1.10 Read-Modify

16

Write Instruction

16

Features

16

1.11 Instruction Set

17

1.12 Instructions That

21

Affect Flag

21

Settings

21

1.13 Instruction Table

22

1.14 Instruction Definitions

25

1.14.2 ADD A,<src-byte>

26

ADD A,direct

26

ADD A,@R

26

ADD A,#data

26

ADDC A,R

27

ADDC A,direct

27

ADDC A,@R

27

ADDC A,#data

27

1.14.4 AJMPaddr11

28

ANL A,R

29

ANL A,direct

29

ANL A,@R

29

1.14.6 ANLC,<src-bit>

30

ANL A,#data

30

ANL direct,A

30

ANL direct,#data

30

ANL C,bit

30

1.14.7 CJNE <dest

31

ANL C,/bit

31

CJNE A,direct,rel

31

CJNE A,#data,rel

32

,#data,rel

32

CJNE @R

32

,data,rel

32

1.14.8 CLR A

33

1.14.9 CLR bit

33

CLR bit

33

1.14.10 CPL A

34

1.14.11 CPL bit

34

CPL bit

34

1.14.12 DA A

35

1.14.13 DECbyte

36

DEC direct

36

1.14.14 DIVAB

37

DJNZ direct,rel

38

1.14.16 INC<byte>

39

INC direct

39

1.14.18 JB blt,rel

40

1.14.17 INC DPTR

40

1.14.19 JBC bit,rel

41

1.14.20 JC rel

41

1.14.21 JMP @A+DPTR

42

1.14.22 JNB bit,rel

42

1.14.23 JNC rel

43

1.14.24 JNZ rel

43

1.14.25 JZ rel

44

1.14.26 LCALLaddr16

44

1.14.27 LJMPaddr16

45

1.14.28 MOV <dest

45

MOV A,R

45

4316E–8051–01/07

46

1.14.30 MOV DPTR,#data16

49

1.14.31 MOVC A,@A+

49

<base-reg>

49

1.14.32 MOVX <dest

50

MOVC A,@A+DPTR

50

MOVC A,@A+PC

50

MOVX A,@R

50

1.14.33 MUL AB

51

MOVX A,@DPTR

51

MOVX @DPTR,A

51

1.14.34 NOP

52

1.14.35 ORL<dest-byte>

53

<src-byte>

53

ORL A,direct

53

ORL A,@R

53

1.14.37 POP direct

56

1.14.38 PUSH direct

56

1.14.39 RET

57

1.14.40 RETI

57

1.14.41 RL A

58

1.14.42 RLC A

58

1.14.43 RR A

59

1.14.44 RRC A

59

1.14.45 SETB<bit>

60

1.14.46 SJMP rel

60

SETB bit

60

SUBB A,R

61

SUBB A,direct

61

SUBB A,@R

61

1.14.48 SWAP A

62

1.14.49 XCH A,<byte>

62

SUBB A,#data

62

XCH A,R

62

XCH A,direct

62

1.14.50 XCHD A,@R

63

XCH A,@R

63

1.14.51 XRL <dest

64

XRL A,R

64

XRL A,direct

64

XRL A,@R

64

XRL A,@#data

65

XRL direct,A

65

Section 2

66

Note: (*)For Timer 2 only

67

2.2 Special Function

68

Registers

68

2.3 Oscillator and

70

Clock Circuit

70

2.4 CPU Timing

71

2.5 Port Structures

73

2.6 Accessing

77

External Memory

77

2.7 PSEN

78

Reset Value = XXXX XX00b

80

Table 2-2. AUXR Register

80

2.9 Timer/Counters

81

2.10 Timer 0

82

2.11 Timer 1

84

2.12 Timer 2

89

Timer 2 Control Register

92

2.13 Serial Interface

94

Baud Rate Selection for

97

UART for Mode 1 and 3

97

Common Features Description

100

2.14 Framing Error

104

Detection

104

2.15 Automatic

105

Address

105

Recognition

105

UART Registers

108

Reset Value = 0000 0000b

110

Bit addressable

110

Table 2-24. T2CON Register

110

2.16 Interrupts

112

Regional Headquarters

116

Atmel C51 Fiche technique (21 pages)

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Table des matières

C51 MCU’s

1

1.2 Hardware reset

3

Microcontroller

4

Internal Reset

6

1.3 Oscillator circuit

10

7764A–8051–11/07

11

1.4 Microcontroller status

13

2.1 HPC package

14

2.2 LPC package

15

Do not change the BLJB bit

16

3. Troubleshooting

19

Regional Headquarters

21

Atmel C51 Fiche technique (127 pages)

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Table des matières

Features

1

Description

1

AT89C51RB2/RC2

10

Table of Contents

124

Regional Headquarters

127

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