AT32UC3B0512-A2UES ATMEL [ATMEL Corporation], AT32UC3B0512-A2UES Datasheet - Page 39
AT32UC3B0512-A2UES
Manufacturer Part Number
AT32UC3B0512-A2UES
Description
32-bit AVR Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT32UC3B0512-A2UES.pdf
(91 pages)
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Table 9-7.
9.4.3
Table 9-8.
Symbol
T
Symbol
V
V
V
V
V
T
T
T
T
BOD
POR
RST
SSU1
SSU2
DDRR
DDFR
POR+
POR-
RESTART
Reset Sequence
BOD Timing
Electrical Characteristics
Minimum time with VDDCORE <
VBOD to detect power failure
VDDCORE rise rate to ensure power-
on-reset
VDDCORE fall rate to ensure power-
on-reset
Rising threshold voltage: voltage up
to which device is kept under reset by
POR on rising VDDCORE
Falling threshold voltage: voltage
when POR resets device on falling
VDDCORE
On falling VDDCORE, voltage must
go down to this value before supply
can rise again to ensure reset signal
is released at V
Minimum time with VDDCORE <
V
Time for reset signal to be
propagated to system
Time for Cold System Startup: Time
for CPU to fetch its first instruction
(RCosc not calibrated)
Time for Hot System Startup: Time for
CPU to fetch its first instruction
(RCosc calibrated)
Parameter
Parameter
POR-
POR+
Conditions
Falling VDDCORE from 1.8V to 1.1V
Conditions
Rising VDDCORE:
V
Falling VDDCORE:
1.8V -> V
Falling VDDCORE:
1.8V -> V
Falling VDDCORE:
1.8V -> 1.1V
RESTART
POR+
RESTART
-> V
POR+
Min.
Min.
0.01
0.01
-0.1
480
1.4
1.2
Typ.
Typ.
1.55
300
200
420
1.3
15
Max.
Max.
1.65
800
400
400
960
1.4
0.5
V/ms
V/ms
Unit
Unit
ns
µs
µs
µs
µs
V
V
V
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