ATTINY261_09 Datasheet, PDF (224/227 Pages) ATMEL Corporation – 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash

14.5 Modes of Operation .........................................................................................75
14.6 Input Capture Unit ...........................................................................................77
14.7 Output Compare Unit .......................................................................................78
14.8 Timer/Counter Timing Diagrams .....................................................................79
14.9 Accessing Registers in 16-bit Mode ................................................................81
14.10 Register Description ........................................................................................85
15 Timer/Counter1 Prescaler ..................................................................... 89
15.1 Register Description ........................................................................................90
16 Timer/Counter1 ...................................................................................... 92
16.1 Features ..........................................................................................................92
16.2 Overview ..........................................................................................................92
16.3 Counter Unit ....................................................................................................96
16.4 Output Compare Unit .......................................................................................97
16.5 Dead Time Generator ......................................................................................99
16.6 Compare Match Output Unit ..........................................................................100
16.7 Modes of Operation .......................................................................................102
16.8 Timer/Counter Timing Diagrams ...................................................................109
16.9 Fault Protection Unit ......................................................................................111
16.10 Accessing 10-Bit Registers ............................................................................112
16.11 Register Description ......................................................................................115
17 USI – Universal Serial Interface .......................................................... 128
17.1 Features ........................................................................................................128
17.2 Overview ........................................................................................................128
17.3 Functional Descriptions .................................................................................129
17.4 Alternative USI Usage ...................................................................................135
17.5 Register Descriptions ....................................................................................135
18 AC – Analog Comparator .................................................................... 140
18.1 Register Description ......................................................................................140
18.2 Analog Comparator Multiplexed Input ...........................................................141
19 ADC – Analog to Digital Converter ..................................................... 144
19.1 Features ........................................................................................................144
19.2 Overview ........................................................................................................144
19.3 Operation .......................................................................................................145
19.4 Starting a Conversion ....................................................................................146
224 ATtiny261/ATtiny461/ATtiny861
7753C–AVR–07/09