DOC7707 datasheet(64/307 Pages) ETC1

64 / 307 page

7707F–AVR–11/10

AT90USB82/162

Notes:

1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader address at

reset, see “Memory Programming” on page 243.

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. Moreover, contrary to other 8K/16K

devices, the interrupt vectors spacing remains identical (2 words) for both 8KB and 16KB

versions.

Table 10-2 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.

$0034

ANALOG COMP

Analog Comparator

$0036

EE READY

EEPROM Ready

$0038

SPM READY

Store Program Memory Ready

Table 10-1.

Reset and Interrupt Vectors (Continued)

Vector

No.

Program

Address(2)

Source

Interrupt Definition

DOC7707 Datasheet(PDF) 64 Page - List of Unclassifed Manufacturers