ATTINY461-20SUR Atmel, ATTINY461-20SUR Datasheet - Page 50

• Manufacturer Part Number: ATTINY461-20SUR
• Description: MCU AVR 4KB FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY461-20SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9. Interrupts
9.1
50
Interrupt Vectors
ATtiny261/461/861
This section describes the specifics of the interrupt handling as performed in ATtiny261/461/861.
For a general explanation of the AVR interrupt handling, refer to
on page
Interrupt vectors of ATtiny261/461/861 are described in
Table 9-1.
If the program never enables an interrupt source, the Interrupt Vectors are not used, and regular
program code can be placed at these locations.
The most typical and general program setup for the Reset and Interrupt Vector Addresses in
ATtiny261/461/861 is shown in the program example below.
Vector
No.
Address Labels Code
0x0000
0x0001
0x0002
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
12.
Program
Address
Reset and Interrupt Vectors
0x000C
0x000D
0x000A
0x000B
0x000E
0x000F
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
0x0008
0x0009
0x0010
0x0011
0x0012
rjmp
rjmp
rjmp
Source
RESET
INT0
PCINT
TIMER1_COMPA
TIMER1_COMPB
TIMER1_OVF
TIMER0_OVF
USI_START
USI_OVF
EE_RDY
A
ADC
WDT
INT1
TIMER0_COMPA
TIMER0_COMPB
TIMER0_CAPT
TIMER1_COMPD
FAULT_PROTECTION
NA_COMP
RESET
EXT_INT0
PCINT
Comments
; Reset Handler
; IRQ0 Handler
; PCINT Handler
Interrupt Definition
External Pin, Power-on Reset,
Brown-out Reset, Watchdog Reset
External Interrupt Request 0
Pin Change Interrupt Request
Timer/Counter1 Compare Match A
Timer/Counter1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter0 Overflow
USI Start
USI Overflow
EEPROM Ready
Analog Comparator
ADC Conversion Complete
Watchdog Time-out
External Interrupt Request 1
Timer/Counter0 Compare Match A
Timer/Counter0 Compare Match B
Timer/Counter1 Capture Event
Timer/Counter1 Compare Match D
Timer/Counter1 Fault Protection
Table 9-1
“Reset and Interrupt Handling”
below.
2588E–AVR–08/10