Datasheet

35
ATtiny4/5/9/10 [DATASHEET]
8127F–AVR–02/2013
9. Interrupts
This section describes the specifics of the interrupt handling in ATtiny4/5/9/10. For a general explanation of the
AVR interrupt handling, see “Reset and Interrupt Handling” on page 10.
9.1 Interrupt Vectors
Interrupt vectors of ATtiny4/5/9/10 are described in Table 9-1 below.
Note: 1. The ADC is available in ATtiny5/10, only.
In case the program never enables an interrupt source, the Interrupt Vectors will not be used and, consequently,
regular program code can be placed at these locations.
The most typical and general setup for interrupt vector addresses in ATtiny4/5/9/10 is shown in the program exam-
ple below.
Address Labels Code Comments
0x0000 rjmp RESET ; Reset Handler
0x0001 rjmp INT0 ; IRQ0 Handler
0x0002 rjmp PCINT0 ; PCINT0 Handler
0x0003 rjmp TIM0_CAPT ; Timer0 Capture Handler
0x0004 rjmp TIM0_OVF ; Timer0 Overflow Handler
0x0005 rjmp TIM0_COMPA ; Timer0 Compare A Handler
0x0006 rjmp TIM0_COMPB ; Timer0 Compare B Handler
0x0007 rjmp ANA_COMP ; Analog Comparator Handler
0x0008 rjmp WDT ; Watchdog Interrupt Handler
0x0009 rjmp VLM ; Voltage Level Monitor Handler
0x000A rjmp ADC ; ADC Conversion Handler
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Table 9-1. Reset and Interrupt Vectors
Vector No. Program Address Label Interrupt Source
1 0x0000 RESET
External Pin, Power-on Reset,
VLM Reset, Watchdog Reset
2 0x0001 INT0 External Interrupt Request 0
3 0x0002 PCINT0 Pin Change Interrupt Request 0
4 0x0003 TIM0_CAPT Timer/Counter0 Input Capture
5 0x0004 TIM0_OVF Timer/Counter0 Overflow
6 0x0005 TIM0_COMPA Timer/Counter0 Compare Match A
7 0x0006 TIM0_COMPB Timer/Counter0 Compare Match B
8 0x0007 ANA_COMP Analog Comparator
9 0x0008 WDT Watchdog Time-out
10 0x0009 VLM V
CC
Voltage Level Monitor
11 0x000A ADC ADC Conversion Complete
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