ATTINY88_14 Datasheet, PDF (296/302 Pages) ATMEL Corporation – 8-bit AVR Microcontroller with 8K Bytes In-System

6.5 Clock Startup Sequence ..................................................................................32
6.6 Register Description ........................................................................................34
7 Power Management and Sleep Modes ................................................. 36
7.1 Sleep Modes ....................................................................................................36
7.2 Software BOD Disable .....................................................................................37
7.3 Minimizing Power Consumption ......................................................................38
7.4 Register Description ........................................................................................39
8 System Control and Reset .................................................................... 42
8.1 Resetting the AVR ...........................................................................................42
8.2 Reset Sources .................................................................................................43
8.3 Internal Voltage Reference ..............................................................................45
8.4 Watchdog Timer ..............................................................................................46
8.5 Register Description ........................................................................................49
9 Interrupts ................................................................................................ 52
9.1 Interrupt Vectors ..............................................................................................52
9.2 External Interrupts ...........................................................................................53
9.3 Register Description ........................................................................................55
10 I/O-Ports .................................................................................................. 60
10.1 Introduction ......................................................................................................60
10.2 Ports as General Digital I/O .............................................................................61
10.3 Alternate Port Functions ..................................................................................65
10.4 Register Description ........................................................................................77
11 8-bit Timer/Counter0 .............................................................................. 80
11.1 Features ..........................................................................................................80
11.2 Overview ..........................................................................................................80
11.3 Timer/Counter Clock Sources .........................................................................81
11.4 Counter Unit ....................................................................................................81
11.5 Output Compare Unit .......................................................................................82
11.6 Modes of Operation .........................................................................................83
11.7 Timer/Counter Timing Diagrams .....................................................................84
11.8 8-bit Timer/Counter Register Description ........................................................85
12 16-bit Timer/Counter1 with PWM .......................................................... 89
12.1 Features ..........................................................................................................89
12.2 Overview ..........................................................................................................89
ii ATtiny48/88
8008H–AVR–04/11