Datasheet

222
7701F–AVR–10/12
Atmel ATtiny24/44/84 [Preliminary]
18 Analog-to-Digital Converter ............................................................. 137
18.1 Features .....................................................................................................137
18.2 Overview ....................................................................................................137
18.3 ADC Operation ...........................................................................................138
18.4 Starting a Conversion .................................................................................139
18.5 Prescaling and Conversion Timing .............................................................140
18.6 Changing Channel or Reference Selection ................................................143
18.7 ADC Noise Canceller .................................................................................144
18.8 ADC Conversion Result .............................................................................147
18.9 Temperature Measurement ........................................................................148
18.10 Register Description ...................................................................................149
19 debugWIRE On-chip Debug System ................................................ 156
19.1 Features .....................................................................................................156
19.2 Overview ....................................................................................................156
19.3 Physical Interface .......................................................................................156
19.4 Software Break Points ................................................................................157
19.5 Limitations of debugWIRE ..........................................................................157
19.6 Register Description ...................................................................................157
20 Self-Programming the Flash ............................................................ 158
20.1 Performing Page Erase by SPM ................................................................158
20.2 Filling the Temporary Buffer (Page Loading) .............................................158
20.3 Performing a Page Write ............................................................................159
20.4 Addressing the Flash During Self-Programming ........................................159
20.5 Register Description ...................................................................................161
21 Memory Programming ...................................................................... 163
21.1 Program And Data Memory Lock Bits ........................................................163
21.2 Fuse Bytes .................................................................................................164
21.3 Signature Bytes ..........................................................................................165
21.4 Calibration Byte ..........................................................................................165
21.5 Page Size ...................................................................................................166
21.6 Serial Downloading ....................................................................................167
21.7 High-voltage Serial Programming ..............................................................171
21.8 High-voltage Serial Programming Algorithm ..............................................172