Datasheet

i
8024A–AVR–04/08
ATmega8HVA/16HVA
Table of Contents
Features ..................................................................................................... 1
1 Pin Configurations ................................................................................... 2
1.1LGA ...........................................................................................................................2
1.2TSOP .........................................................................................................................3
1.3Pin Descriptions .........................................................................................................3
2 Overview ................................................................................................... 5
2.1Comparison Between ATmega8HVA and ATmega16HVA .......................................7
3 Disclaimer ................................................................................................. 7
4 Resources ................................................................................................. 7
5 Data Retention .......................................................................................... 7
6 About Code Examples ............................................................................. 7
7 AVR CPU Core .......................................................................................... 8
7.1Overview ....................................................................................................................8
7.2ALU – Arithmetic Logic Unit .......................................................................................9
7.3Status Register ..........................................................................................................9
7.4General Purpose Register File ................................................................................11
7.5Stack Pointer ...........................................................................................................12
7.6Instruction Execution Timing ...................................................................................13
7.7Reset and Interrupt Handling ...................................................................................13
8 AVR Memories ........................................................................................ 16
8.1Overview ..................................................................................................................16
8.2In-System Reprogrammable Flash Program Memory .............................................16
8.3SRAM Data Memory ................................................................................................16
8.4EEPROM Data Memory ..........................................................................................18
8.5I/O Memory ..............................................................................................................18
8.6Register Description ................................................................................................19
9 System Clock and Clock Options ......................................................... 24
9.1Clock Systems and their Distribution .......................................................................24
9.2Clock Sources .........................................................................................................25
9.3Calibrated Fast RC Oscillator ..................................................................................25
9.4Slow RC Oscillator ...................................................................................................26