ATtiny167 datasheet(226/282 Pages) ATMEL

226 / 282 page

226

7728D–AVR–07/09

ATtiny87/ATtiny167

Note that the fuses are read as logical zero, “0”, if they are programmed.

Notes:

1. See ”Alternate Functions of Port B” on page 81. for description of RSTDISBL Fuse.

2. The SPIEN Fuse is not accessible in serial programming mode.

3. See ”Watchdog Timer Control Register - WDTCR” on page 57. for details.

4. See Table 22-5 on page 247 for BODLEVEL Fuse coding.

Table 21-3.

Extended Fuse Byte

Fuse Extended Byte

Bit No

Description

Default Value

–

1 (unprogrammed)

–

1 (unprogrammed)

–

1 (unprogrammed)

–

1 (unprogrammed)

–

1 (unprogrammed)

–

1 (unprogrammed)

–

1 (unprogrammed)

SELFPRGEN

Self Programming Enable

1 (unprogrammed)

Table 21-4.

Fuse High Byte

Bit No Description

Default Value

RSTDISBL(1)

External Reset Disable

1 (unprogrammed)

DWEN

DebugWIRE Enable

1 (unprogrammed)

SPIEN(2)

Enable Serial Program

and Data Downloading

0 (programmed,

SPI programming enabled)

WDTON(3)

Watchdog Timer always on

1 (unprogrammed)

EESAVE

EEPROM memory is preserved

through the Chip Erase

1 (unprogrammed,

EEPROM not preserved)

BODLEVEL2(4)

Brown-out Detector trigger level

1 (unprogrammed)

BODLEVEL1(4)

Brown-out Detector trigger level

1 (unprogrammed)

BODLEVEL0(4)

Brown-out Detector trigger level

1 (unprogrammed)

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