Microchip AT89S4051 Manual

Microchip Ikke kategoriseret AT89S4051

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Atmel 8051 Microcontrollers

Hardware Manual

Atmel 8051 Microcontrollers Hardware Manual 1

4316E–8051–01/07

Table of Contents

Section 1

The 8051 Instruction Set....................................................................... 1-2

1.1 Program Status Word................................................................................1-2

1.2 Addressing Modes ....................................................................................1-3

1.3 Arithmetic Instructions...............................................................................1-5

1.4 Logical Instructions ...................................................................................1-6

1.5 Data Transfers .........................................................................................1-7

1.6 External RAM.........................................................................................1-10

1.7 Lookup Tables .......................................................................................1-10

1.8 Boolean Instructions ...............................................................................1-11

1.9 Jump Instructions ....................................................................................1-13

1.10 Read-Modify-Write Instruction Features .................................................1-15

1.11 Instruction Set Summary.........................................................................1-16

1.12 Instructions That Affect Flag Settings .....................................................1-20

1.13 Instruction Table .....................................................................................1-21

1.14 Instruction Definitions..............................................................................1-24

Section 2

Common Features Description ........................................................... 2-66

2.1 Introduction ............................................................................................2-66

2.2 Special Function Registers .....................................................................2-68

2.3 Oscillator and Clock Circuit .....................................................................2-70

2.4 CPU Timing.............................................................................................2-71

2.5 Port Structures and Operation ................................................................2-73

2.6 Accessing External Memory....................................................................2-77

2.7 PSEN ......................................................................................................2-78

2.8 ALE .........................................................................................................2-79

2.9 Timer/Counters .......................................................................................2-81

2.10 Timer 0....................................................................................................2-82

2.11 Timer 1....................................................................................................2-84

2.12 Timer 2....................................................................................................2-89

2.13 Serial Interface........................................................................................2-94

2.14 Framing Error Detection........................................................................2-104

2.15 Automatic Address Recognition ............................................................2-105

2.16 Interrupts ...............................................................................................2-112

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	AT89S4051

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