![](http://datasheet.mmic.net.cn/Microchip-Technology/PIC16F785-I-P_datasheet_99470/PIC16F785-I-P_62.png)
62
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
Notes:
1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader address at
2. When the IVSEL bit in MCUCR is set, Interrupt Vectors will be moved to the start of the Boot
Flash Section. The address of each Interrupt Vector will then be the address in this table
added to the start address of the Boot Flash Section.
3. Applies only to Atmel ATmega1284P.
Table 12-2 shows reset and Interrupt Vectors placement for the various combinations of
BOOTRST and IVSEL settings. If the program never enables an interrupt source, the Interrupt
Vectors are not used, and regular program code can be placed at these locations. This is also
the case if the Reset Vector is in the Application section while the Interrupt Vectors are in the
Boot section or vice versa.
Note:
means unprogrammed while “0” means programmed.
28
$0036
SPM_READY
Store Program Memory Ready
29
$0038
USART1_RX
USART1 Rx Complete
30
$003A
USART1_UDRE
USART1 Data Register Empty
31
$003C
USART1_TX
USART1 Tx Complete
32
$003E
Timer/Counter3 Capture Event
33
$0040
Timer/Counter3 Compare Match A
34
$0042
Timer/Counter3 Compare Match B
35
$0044
Timer/Counter3 Overflow
Table 12-2.
Reset and Interrupt Vectors placement
BOOTRST
IVSEL
Reset Address
Interrupt Vectors Start Address
1
0
0x0000
0x0002
1
0x0000
Boot Reset Address + 0x0002
0
Boot Reset Address
0x0002
0
1
Boot Reset Address
Boot Reset Address + 0x0002
Table 12-1.
Reset and Interrupt Vectors. (Continued)
Vector
no.
Program
address (2)
Source
Interrupt definition