at32uc3b0512-z2ues ATMEL Corporation, at32uc3b0512-z2ues Datasheet - Page 137

• Manufacturer Part Number: at32uc3b0512-z2ues
• Description: 32-bit Avr Microcontroller
• Manufacturer: ATMEL Corporation

14.9
14.9.1
32059J–12/2010
GPF31
31
23
15
7
Fuses Settings
Flash General Purpose Fuse Register Low (FGPFRLO)
GPF30
30
22
14
6
BODLEVEL[3:0]
The flash block contains a number of general purpose fuses. Some of these fuses have defined
meanings outside the flash controller and are described in this section.
The general purpose fuses are erase by a JTAG chip erase.
BODEN: Brown Out Detector Enable
BODHYST: Brown Out Detector Hysteresis
0: The Brown out detector hysteresis is disabled
1: The Brown out detector hysteresis is enabled
BODLEVEL: Brown Out Detector Trigger Level
This controls the voltage trigger level for the Brown out detector. Refer to Electrical Characteris-
tics section. If the BODLEVEL is set higher than VDDCORE and enabled byt fuses, the part will
be in constant reset. To recover from this situation, apply an external voltage on VDDCORE that
is higher than the BOD level and disable the BOD.
LOCK, EPFL, BOOTPROT
These are Flash controller fuses and are described in the FLASHC section.
As no external memories can be connected to AT32UC3B the EPFL bit has no effect.
BODEN
0x0
0x1
0x2
0x3
GPF29
29
21
13
5
Description
BOD disabled
BOD enabled, BOD reset enabled
BOD enabled, BOD reset disabled
BOD disabled
28
20
12
4
LOCK[15:8]
LOCK[7:0]
BODEN
27
19
11
3
BOOTPROT
BODHYST
26
18
10
2
25
17
9
1
BODLEVEL[5:4]
AT32UC3B
EPFL
24
16
8
0
137