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9157C–AVR–03/12
Atmel ATtiny88 Automotive
29. Table of Contents
Features ..................................................................................................... 1
1
Pin Configurations ................................................................................... 2
1.1
Disclaimer ..........................................................................................................2
1.2
Pin Descriptions .................................................................................................3
2
Overview ................................................................................................... 5
2.1
Block Diagram ...................................................................................................5
2.2
Automotive Quality Grade ................................................................................6
3
Additional Information ............................................................................. 7
3.1
Resources .........................................................................................................7
3.2
About Code Examples .......................................................................................7
3.3
Data Retention ...................................................................................................7
3.4
Disclaimer ..........................................................................................................7
4
AVR CPU Core .......................................................................................... 8
4.1
Introduction ........................................................................................................8
4.2
Architectural Overview .......................................................................................8
4.3
ALU – Arithmetic Logic Unit ...............................................................................9
4.4
Status Register ................................................................................................10
4.5
General Purpose Register File ........................................................................11
4.6
Stack Pointer ...................................................................................................12
4.7
Instruction Execution Timing ...........................................................................13
4.8
Reset and Interrupt Handling ...........................................................................13
5
Memories ................................................................................................ 16
5.1
In-System Reprogrammable Flash Program Memory .....................................16
5.2
SRAM Data Memory ........................................................................................17
5.3
EEPROM Data Memory ..................................................................................18
5.4
I/O Memory ......................................................................................................22
5.5
Register Description ........................................................................................22
6
System Clock and Clock Options ......................................................... 26
6.1
Clock Systems and their Distribution ...............................................................26
6.2
Clock Sources .................................................................................................27
6.3
Calibrated Internal Oscillator ...........................................................................28
6.4
128 kHz Internal Oscillator ..............................................................................29