Datasheet

276
32117D–AVR-01/12
AT32UC3C
15.9 Fuses Settings
The flash block contains 32 general purpose fuses. These 32 fuses can be found in the Flash
General Purpose Fuse Register Low. Some of these fuses have defined meanings outside the
flash controller and are described in this section.
In addition to the General Purpose fuses parts of the Flash, user page can have a defined mean-
ing outside the flash controller and are described in this section. Note that after writing the user
page, values will not be propagated to other modules internally on the device. Other modules
will load these values after resetting the chip.
The general purpose fuses are erased by a JTAG or aWire chip erase.
15.9.1 Flash General Purpose Fuse Register (FGPFRLO)
• BOD33EN: 3.3V Brown Out Detector Enable
• BODEN: 1.8V Brown Out Detector Enable
Table 15-10. FGPFR Register Description
31 30 29 28 27 26 25 24
BOD33EN BODEN BODHYST BODLEVEL[3:1]
23 22 21 20 19 18 17 16
BODLEVEL[0] UPROT SECURE BOOTPROT EPFL
15 14 13 12 11 10 9 8
LOCK[15:8]
7 6543210
LOCK[7:0]
Table 15-11. BOD33EN Field Description
BOD33EN Description
0x0 BOD33 disabled
0x1 BOD33 enabled, BOD33 reset enabled
0x2 BOD33 enabled, BOD33 reset disabled
0x3 BOD33 disabled
Table 15-12. BODEN Field Description
BODEN Description
0x0 BOD18 disabled
0x1 BOD18 enabled, BOD18 reset enabled
0x2 BOD18 enabled, BOD18 reset disabled
0x3 BOD18 disabled