267
AT90PWM216/316 [DATASHEET]
7710H–AVR–07/2013
PSCRV fuse bit. In this second case, PSCOUT00 & PSCOUT01 keep the forced state until PSOC0 register is
written..
If PSC1RB fuse equals 1 (unprogrammed), PSCOUT10 & PSCOUT11 keep a standard port behavior. If PSC1RB
fuse equals 0 (programmed), PSCOUT10 & PSCOUT11 are forced at reset to low level or high level according to
PSCRV fuse bit. In this second case, PSCOUT10 & PSCOUT11 keep the forced state until PSOC1 register is
written.
If PSC2RB fuse equals 1 (unprogrammed), PSCOUT20, PSCOUT21, PSCOUT22 & PSCOUT23 keep a standard
port behavior. If PSC1RB fuse equals 0 (programmed), PSCOUT20, PSCOUT21, PSCOUT22 & PSCOUT23 are
forced at reset to low level or high level according to PSCRV fuse bit. In this second case, PSCOUT20,
PSCOUT21, PSCOUT22 & PSCOUT23 keep the forced state until PSOC2 register is written.
Notes:
2. The SPIEN Fuse is not accessible in serial programming mode.
Note:
1. The default value of SUT1..0 results in maximum start-up time for the default clock source. See
Table 6-9 on page2. The default setting of CKSEL3..0 results in internal RC Oscillator @ 8 MHz. See
Table 6-9 on page 32 for details.
details.
Table 24-5.
Fuse High Byte
High Fuse Byte
Bit No
Description
Default Value
7
External Reset Disable
1 (unprogrammed)
DWEN
6
debugWIRE Enable
1 (unprogrammed)
5
Enable Serial Program and Data Downloading
0 (programmed, SPI programming enabled)
4
Watchdog Timer Always On
1 (unprogrammed)
EESAVE
3
EEPROM memory is preserved through the Chip Erase
1 (unprogrammed), EEPROM not reserved
2
Brown-out Detector trigger level
1 (unprogrammed)
1
Brown-out Detector trigger level
1 (unprogrammed)
0
Brown-out Detector trigger level
1 (unprogrammed)
Table 24-6.
Fuse Low Byte
Low Fuse Byte
Bit No
Description
Default Value
7
Divide clock by 8
0 (programmed)
6
Clock output
1 (unprogrammed)
SUT1
5
Select start-up time
SUT0
4
Select start-up time
CKSEL3
3
Select Clock source
CKSEL2
2
Select Clock source
CKSEL1
1
Select Clock source
CKSEL0
0
Select Clock source