ATmega325PA Atmel Corporation, ATmega325PA Datasheet - Page 326

• Manufacturer Part Number: ATmega325PA
• Manufacturer: Atmel Corporation

28.5
28.6
28.6.1
8285D–AVR–06/11
System and Reset Characteristics
Power-on Reset
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450PA
revision C and later
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P
The following characteristics apply only to ATmega165A/165PA
Table 28-13. Reset, Brown-out and Internal Voltage Characteristics
Note:
Table 28-14. Reset, Brown-out and Internal Voltage Reference Characteristics,
Notes:
Symbol
Symbol
V
V
V
V
SR
t
t
V
V
t
I
RST
HYST
BOD
POT
RST
BG
BG
PSR
BG
POT
ON
1. The Power-on Reset will not work unless the supply voltage has been below V
1. The Power-on Reset will not work unless the supply voltage has been below V
Parameter
Power-on Reset Threshold
Voltage (rising)
Power-on Reset Threshold
Voltage (falling)
Power-on Reset Slope Rate
Minimum pulse width on RESET
Pin
Brown-out Detector Hysteresis
Min Pulse Width on Brown-out
Reset
Bandgap reference voltage
Bandgap reference start-up time
Bandgap reference current
consumption
RESET Pin Threshold Voltage
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
Power-on Slope Rate
T
A
= -40°C to 85°C
(1)
V
V
V
Condition
T
T
T
T
T
V
V
A
A
CC
CC
CC
to 85°C
to 85°C
A
A
A
CC
CC
= -40°C
= -40°C
= 25°C
= 25°C
= 25°C
= 2.7V,
= 2.7V,
= 2.7V,
= 3V
= 3V
(1)
0.2 V
Min
1.1
0.6
0.1
1.0
CC
Min.
0.01
1.1
0.6
Typ
1.4
1.3
1.1
50
40
10
2
Typ
1.4
1.3
0.9 V
Max
1.6
1.6
2.5
1.2
4.5
70
Max
1.6
1.6
10
POT
POT
CC
(falling)
(falling)
Units
V/ms
Units
V/ms
mV
V
V
µA
µs
µs
µs
V
V
V
V
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