Datasheet

41
32059L–AVR32–01/2012
AT32UC3B
Therefore VDDCORE rise rate (VDDRR) must be equal or superior to 2.5V/ms and VDDIO must
reach VDDIO mini value before 500 us (< TRST + TSSU1) after VDDCORE has reached V
POR+
min value.
Figure 9-4. Dual Supply Configuration
9.4.4 RESET_N Characteristics
V
D
D
R
R
2
.
5
V
/
m
s
m
i
n
i
m
u
m
Vpor+ min
VDDIO min
<500us
VDDIO
VDDCORE
Internal
POR
(active low)
TRST
TSSU1
First instruction
fetched in flash
Table 9-9. RESET_N Waveform Parameters
Symbol Parameter Conditions Min. Typ. Max. Unit
t
RESET
RESET_N minimum pulse width 10 ns