Rainbow-electronics ATtiny2313 Manuel d'utilisateur télécharger pdf (Page 207)

ATtiny2313

2543A–AVR–08/03

Table of Contents Features................................................................................................. 1

Pin Configurations................................................................................ 1

Overview................................................................................................ 2

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

Pin Descriptions.................................................................................................... 4

About Code Examples.......................................................................... 4

Disclaimer.............................................................................................. 4

AVR CPU Core ...................................................................................... 5

Introduction........................................................................................................... 5

Architectual Overview........................................................................................... 5

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

Status Register ..................................................................................................... 7

General Purpose Register File ............................................................................. 8

Stack Pointer ........................................................................................................ 9

Instruction Execution Timing............................................................................... 10

Reset and Interrupt Handling.............................................................................. 10

AVR ATtiny2313 Memories ................................................................ 13

In-System Reprogrammable Flash Program Memory ........................................ 13

SRAM Data Memory........................................................................................... 13

EEPROM Data Memory...................................................................................... 15

I/O Memory......................................................................................................... 21

System Clock and Clock Options ..................................................... 22

Clock Systems and their Distribution.................................................................. 22

Clock Sources..................................................................................................... 23

Default Clock Source .......................................................................................... 23

Crystal Oscillator................................................................................................. 24

Calibrated Internal RC Oscillator ........................................................................ 25

External Clock..................................................................................................... 27

128 kHz Internal Oscillator.................................................................................. 28

Power Management and Sleep Modes.............................................. 30

Idle Mode............................................................................................................ 31

Power-down Mode.............................................................................................. 31

Standby Mode..................................................................................................... 31

Minimizing Power Consumption ......................................................................... 32

System Control and Reset................................................................. 34

Internal Voltage Reference................................................................................. 39

Watchdog Timer ................................................................................................. 40

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Rainbow-electronics ATtiny2313 Manuel d'utilisateur Page 207