Datasheet

v
8024A–AVR–04/08
ATmega8HVA/16HVA
25.3Physical Interface ................................................................................................139
25.4Software Break Points .........................................................................................140
25.5Limitations of debugWIRE ...................................................................................140
25.6Register Description ............................................................................................140
26 Self-Programming the Flash ............................................................... 141
26.1Overview ..............................................................................................................141
26.2Addressing the Flash During Self-Programming .................................................142
26.3Register Description ............................................................................................147
27 Memory Programming ......................................................................... 149
27.1Program And Data Memory Lock Bits .................................................................149
27.2Fuse Bits ..............................................................................................................149
27.3Signature Bytes ...................................................................................................151
27.4Calibration Bytes .................................................................................................151
27.5Page Size ............................................................................................................151
27.6Serial Programming .............................................................................................151
27.7High-voltage Serial Programming ........................................................................156
27.8High-voltage Serial Programming Algorithm .......................................................157
28 Operating Circuit .................................................................................. 162
29 Electrical Characteristics .................................................................... 165
29.1Absolute Maximum Ratings* ...............................................................................165
29.2DC Characteristics ...............................................................................................166
29.3External Interrupt Characteristics ........................................................................168
29.4General I/O Lines characteristics ........................................................................169
29.5FET Driver Characteristics ..................................................................................170
29.6Power-on and Reset Characteristics ...................................................................170
29.7SPI Timing Characteristics ..................................................................................171
29.8Programming Characteristics ..............................................................................172
30 Typical Characteristics – Preliminary Data ....................................... 174
31 Register Summary ............................................................................... 175
32 Instruction Set Summary ..................................................................... 179
33 Ordering Information ........................................................................... 182
33.1ATmega8HVA ......................................................................................................182
33.2ATmega16HVA ....................................................................................................183