Atmel C51 manuels

Atmel C51 Manuel (70 pages)

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Table des matières

Atmel 8051 Microcontrollers

1

Hardware Manual

1

Section 1

2

Section 2

2

Table of Contents

3

1.2 Addressing

6

1.3 Arithmetic

8

1.4 Logical

9

1.5 Data Transfers

10

The 8051 Instruction Set

11

1.8 Boolean

14

Instructions

14

1.9 Jump

15

Rev. 4316A–8051–01/04

20

Common Features Description

21

2.2 Special Function

22

Registers

22

Note: Reserved

23

2.3 Oscillator and

25

Clock Circuit

25

2.4 CPU Timing

26

2.5 Port Structures

28

2.6 Accessing

32

External Memory

32

4316A–8051–01/04

36

TCON reg

36

TMOD reg

36

Reset Value = 0000 0000b

40

Bit addressable

46

Table 2-17. SCON Register

50

Baud Rate Selection for

51

UART for Mode 1 and 3

51

2.14 Framing Error

58

Detection

58

Table 2-21. SADDR Register

61

Not bit addressable

61

UART Registers

62

Table 2-27. T2CON Register

64

Regional Headquarters

70

Atmel C51 Fiche technique (34 pages)

marque: Atmel | Catégorie: Générateurs d'électricité | Taille: 0.64 MB |

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Table des matières

Continued

2

Microcontroller

3

Pin Description

4

Pin Configurations

4

Block Diagram

5

Special Function Registers

7

Data Memory - RAM

11

Programmable Watchdog Timer

11

Timer 0 and 1

12

Figure 3

14

Figure 4

14

Baud Rate Generator

15

Serial Peripheral Interface

16

8-BIT SHIFT REGISTER

17

Interrupts

18

Oscillator Characteristics

19

Idle Mode

19

Power Down Mode

19

Program Memory Lock Bits

20

Lock Bit Protection Modes

20

Programming the Flash

20

Programming Interface

21

Serial Downloading

21

Instruction Set

22

4. “X” = don’t care

23

= 0°C to 70°C, V

25

= 5.0V ± 10%

25

Serial Downloading Waveforms

26

Absolute Maximum Ratings*

27

DC Characteristics

27

AC Characteristics

28

External Clock Drive

30

Float Waveforms

31

(power down)

32

2. Lock bits programmed

32

Ordering Information

33

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