Техническая Спецификация для Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105
Модели
ATEVK1105
766
AT32UC3A
Table 38-7.
BOD Timing
38.4.2
POR
Table 38-8.
Electrical Characteristic
Symbol
Parameter
Test Conditions
Typ.
Max.
Units.
T
BOD
Minimum time with
VDDCORE < VBOD to
detect power failure
Falling VDDCORE
from 1.8V to 1.1V
300
800
ns
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Units.
V
DDRR
VDDCORE rise rate to ensure power-on-reset
0.01
V/ms
V
SSFR
VDDCORE fall rate to ensure power-on-reset
0.01
400
V/ms
V
POR+
Rising threshold voltage: voltage up to which
device is kept under reset by POR on rising
VDDCORE
Rising VDDCORE:
V
RESTART
->
V
POR+
1.35
1.5
1.6
V
V
POR-
Falling threshold voltage: voltage when POR
resets device on falling VDDCORE
Falling VDDCORE:
1.8V
->
V
POR+
1.25
1.3
1.4
V
V
RESTART
On falling VDDCORE, voltage must go down to
this value before supply can rise again to ensure
reset signal is released at
V
POR+
Falling VDDCORE:
1.8V
->
V
RESTART
-0.1
0.5
V
T
POR
Minimum time with VDDCORE <
V
POR-
Falling VDDCORE:
1.8V
->
1.1V
15
us
T
RST
Time for reset signal to be propagated to system
200
400
us
32058K
AVR32-01/12