AT90S1200 Ver la hoja de datos (PDF) - Atmel Corporation

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AT90S1200

8-Bit Microcontroller with 1K bytes In-System Programmable Flash

Atmel Corporation 

AT90S1200

Table of Contents

Features................................................................................................. 1

Pin Configuration.................................................................................. 1

Description ............................................................................................ 2

Block Diagram ...................................................................................................... 2

Pin Descriptions.................................................................................................... 3

Crystal Oscillator................................................................................................... 3

On-chip RC Oscillator ........................................................................................... 4

Architectural Overview......................................................................... 5

General Purpose Register File ............................................................................. 6

ALU – Arithmetic Logic Unit.................................................................................. 6

In-System Programmable Flash Program Memory .............................................. 6

Program and Data Addressing Modes.................................................................. 7

Subroutine and Interrupt Hardware Stack ............................................................ 8

EEPROM Data Memory........................................................................................ 9

Instruction Execution Timing................................................................................. 9

I/O Memory ......................................................................................................... 10

Reset and Interrupt Handling.............................................................................. 12

Sleep Modes....................................................................................................... 19

Timer/Counter0 ................................................................................... 20

Timer/Counter0 Prescaler................................................................................... 20

Watchdog Timer.................................................................................. 23

EEPROM Read/Write Access............................................................. 25

Prevent EEPROM Corruption ............................................................................. 26

Analog Comparator ............................................................................ 27

I/O Ports............................................................................................... 29

Port B.................................................................................................................. 29

Port D.................................................................................................................. 34

Memory Programming........................................................................ 37

Program and Data Memory Lock Bits................................................................. 37

Fuse Bits............................................................................................................. 37

Signature Bytes .................................................................................................. 37

Programming the Flash and EEPROM............................................................... 37

Parallel Programming ......................................................................................... 38

Parallel Programming Characteristics ................................................................ 43

Serial Downloading............................................................................................. 44

Serial Programming Characteristics ................................................................... 47

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0838H–AVR–03/02

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