ATA5771 ATMEL Corporation, ATA5771 Datasheet - Page 212
ATA5771
Manufacturer Part Number
ATA5771
Description
Manufacturer
ATMEL Corporation
Datasheet
1.ATA5771.pdf
(284 pages)
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19.2
160
Fuse Bytes
ATtiny24/44/84
The ATtiny24/44/84 have three Fuse bytes.
describe the functionality of all the fuses and how they are mapped into the Fuse bytes. Note
that the fuses are read as logical zero, “0”, if they are programmed..
Table 19-3.
Notes:
Table 19-4.
Notes:
Fuse Extended Byte
SELFPRGEN
Fuse High Byte
RSTDISBL
DWEN
SPIEN
WDTON
EESAVE
BODLEVEL2
BODLEVEL1
BODLEVEL0
(2)
(3)
1. Enables SPM instruction. See
1. See
2. DWEN must be unprogrammed when Lock Bit security is required. See
3. The SPIEN Fuse is not accessible in SPI Programming mode.
4. Programming this fues will disable the Watchdog Timer Interrupt. See
5. See
(4)
Fuses. When programming the RSTDISBL Fuse, High-voltage Serial programming has to be
used to change fuses to perform further programming
Memory Lock Bits” on page
a Function of the Fuse Settings of WDTON” on page 42
(1)
(5)
(5)
(5)
(1)
Fuse Extended Byte
Fuse High Byte
“Alternate Functions of Port B” on page 64
Table 20-7 on page 180
Bit No
Bit No
7
6
6
4
3
2
1
0
7
6
5
4
3
2
1
0
Description
External Reset disable
DebugWIRE Enable
Enable Serial Program and Data
Downloading
Watchdog Timer always on
EEPROM memory is preserved through
the Chip Erase
Brown-out Detector trigger level
Brown-out Detector trigger level
Brown-out Detector trigger level
Description
-
-
-
-
-
-
-
Self-Programming Enable
159.
for BODLEVEL Fuse decoding.
“Self-Programming the Flash” on page
Table
19-3,
for description of RSTDISBL and DWEN
Table 19-4
for details.
and
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
Default Value
1 (unprogrammed)
1 (unprogrammed)
0 (programmed, SPI
prog. enabled)
1 (unprogrammed)
1 (unprogrammed,
EEPROM not
preserved)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
153.
“WDT Configuration as
“Program And Data
Table 19-5
8006G–AVR–01/08
briefly
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