Datasheet

iv
8183F–AVR–06/12
ATtiny24A/44A/84A
17 debugWIRE On-chip Debug System .................................................. 150
17.1 Features ........................................................................................................150
17.2 Overview ........................................................................................................150
17.3 Physical Interface ..........................................................................................150
17.4 Software Break Points ...................................................................................151
17.5 Limitations of debugWIRE .............................................................................151
17.6 Register Description ......................................................................................151
18 Self-Programming the Flash ............................................................... 152
18.1 Performing Page Erase by SPM ....................................................................152
18.2 Filling the Temporary Buffer (Page Loading) .................................................152
18.3 Performing a Page Write ...............................................................................153
18.4 Addressing the Flash During Self-Programming ...........................................153
18.5 EEPROM Write Prevents Writing to SPMCSR ..............................................154
18.6 Reading Lock, Fuse and Signature Data from Software ...............................154
18.7 Preventing Flash Corruption ..........................................................................156
18.8 Programming Time for Flash when Using SPM ............................................156
18.9 Register Description ......................................................................................156
19 Memory Programming ......................................................................... 158
19.1 Program And Data Memory Lock Bits ...........................................................158
19.2 Fuse Bytes .....................................................................................................159
19.3 Device Signature Imprint Table .....................................................................160
19.4 Page Size ......................................................................................................161
19.5 Serial Programming .......................................................................................162
19.6 High-voltage Serial Programming ..................................................................166
19.7 High-Voltage Serial Programming Algorithm .................................................166
20 Electrical Characteristics .................................................................... 173
20.1 Absolute Maximum Ratings* .........................................................................173
20.2 DC Characteristics .........................................................................................173
20.3 Speed ............................................................................................................174
20.4 Clock Characteristics .....................................................................................175
20.5 System and Reset Characteristics ................................................................176
20.6 ADC Characteristics ......................................................................................177
20.7 Analog Comparator Characteristics ...............................................................180
20.8 Serial Programming Characteristics ..............................................................180
20.9 High-Voltage Serial Programming Characteristics ........................................181