Datasheet

iv
2586N–AVR–04/11
ATtiny25/45/85
18.5 Limitations of debugWIRE .............................................................................144
18.6 Register Description ......................................................................................144
19 Self-Programming the Flash ............................................................... 145
19.1 Performing Page Erase by SPM ....................................................................145
19.2 Filling the Temporary Buffer (Page Loading) .................................................145
19.3 Performing a Page Write ...............................................................................146
19.4 Addressing the Flash During Self-Programming ...........................................146
19.5 EEPROM Write Prevents Writing to SPMCSR ..............................................147
19.6 Reading Lock, Fuse and Signature Data from Software ...............................147
19.7 Preventing Flash Corruption ..........................................................................149
19.8 Programming Time for Flash when Using SPM ............................................149
19.9 Register Description ......................................................................................149
20 Memory Programming ......................................................................... 151
20.1 Program And Data Memory Lock Bits ...........................................................151
20.2 Fuse Bytes .....................................................................................................152
20.3 Device Signature Imprint Table .....................................................................153
20.4 Page Size ......................................................................................................154
20.5 Serial Downloading ........................................................................................155
20.6 High-voltage Serial Programming ..................................................................159
20.7 High-voltage Serial Programming Algorithm .................................................159
21 Electrical Characteristics .................................................................... 166
21.1 Absolute Maximum Ratings* .........................................................................166
21.2 DC Characteristics .........................................................................................166
21.3 Speed ............................................................................................................168
21.4 Clock Characteristics .....................................................................................169
21.5 System and Reset Characteristics ................................................................170
21.6 Brown-Out Detection .....................................................................................171
21.7 ADC Characteristics ......................................................................................172
21.8 Serial Programming Characteristics ..............................................................175
21.9 High-voltage Serial Programming Characteristics .........................................176
22 Typical Characteristics ........................................................................ 177
22.1 Active Supply Current ....................................................................................177
22.2 Idle Supply Current ........................................................................................180
22.3 Supply Current of I/O modules ......................................................................182
22.4 Power-down Supply Current ..........................................................................183