ATXMEGA128B3-AU ATMEL [ATMEL Corporation], ATXMEGA128B3-AU Datasheet - Page 78

• Manufacturer Part Number: ATXMEGA128B3-AU
• Description: 8/16-bit Atmel XMEGA B3 Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

36.10 Brownout Detection Characteristics
Table 36-15. Brownout Detection Characteristics
Note:
36.11 External Reset Characteristics
Table 36-16. External Reset Characteristics
36.12 Power-on Reset Characteristics
Table 36-17. Power-on Reset Characteristics
Note:
8074B–AVR–02/12
Symbol
Symbol
Symbol
V
V
V
V
t
t
POT-
BOD
HYST
POT+
EXT
RST
(1)
1. BOD is calibrated at 85°C within BOD level 0 values, and BOD level 0 is the default level.
1. Both V
Parameter
BOD level 0 falling Vcc
BOD level 1 falling Vcc
BOD level 2 falling Vcc
BOD level 3 falling Vcc
BOD level 4 falling Vcc
BOD level 5 falling Vcc
BOD level 6 falling Vcc
BOD level 7 falling Vcc
Detection time
Hysteresis
Parameter
Minimum reset pulse width
Reset threshold voltage
Parameter
POR threshold voltage falling V
POR threshold voltage rising V
POT-
values are only valid when BOD is disabled. When BOD is enabled the µBOD is enabled, and V
CC
CC
V
V
V
V
CC
CC
CC
CC
= 2.7 - 3.6V
= 1.6 - 2.7V
falls faster than 1V/ms
falls at 1V/ms or slower
(1)
T = 85°C, calibrated
Continous mode
Sampled mode
Condition
Condition
Condition
Min
Min
0.4
0.8
Min
1.5
0.50*V
0.40*V
Typ
Typ
1.0
1.3
1.3
90
1000
Typ
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
0.4
1.6
CC
CC
XMEGA B3
1000
Max
Max
1.59
POT-
Max
1.72
=V
POT+
Units
Units
Units
µs
%
ns
V
V
V
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