ATA6621 Ver la hoja de datos (PDF) - Atmel Corporation
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ATA6621 Datasheet PDF : 27 Pages
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ATA6621
5. Electrical Characteristics (Continued)
5V < VS < 18V, Tamb = –40°C to +125°C
No. Parameters
Test Conditions
Pin Symbol Min
Typ
Max
Unit Type*
12 Watchdog Input PTRIG and NTRIG
12.1
Watchdog input
high-level threshold
V_HPTRIG
3.5
V
A
12.2
Watchdog input low
threshold
V_LPTRIG
1.5
V
A
12.3
Internal pull down PTRIG
Internal pull down PTRIG
13 Watchdog Oscillator
RpdPTRIG
RpuNTRIG
250
600
kΩ
A
13.1
Voltage at WD_OSC in
Normal Mode
IWD_OSC = –250 µA
VWD_OSC
2.3
2.5
2.7
V
A
13.2
Possible values of
resistor
ROSC
10
120
kΩ
D
13.3
13.4
13.5
13.6
14
14.1
Oscillator period
ROSC = 10 kΩ
Oscillator period
ROSC = 51 kΩ
Oscillator period
ROSC = 91 kΩ
Oscillator period
ROSC = 120 kΩ
Watchdog Timing Relative to tOSC
Watchdog lead time after
reset
tOSC
2.1
2.6
3.1
µs
A
tOSC
10
12.5
15
µs
A
tOSC
17.9
22.4
26.8
µs
A
tOSC
23.2
29
34.8
µs
A
td
3922
cycles A
14.2
Watchdog closed
window
t1
800
cycles A
14.3 Watchdog open window
14.4
Watchdog reset time
NRES
t2
840
cycles A
tnres
157
cycles A
15 Temperature Monitor at Pin TEMP
Voltage at TEMP in
15.1 Normal Mode
(T = –40°C)
ITEMP = ±3 µA
VTEMP
2.35
2.7
V
A
15.1
Voltage at TEMP in
Normal Mode (T = 27°C)
ITEMP = ±3 µA
VTEMP
2.0
2.35
V
A
Voltage at TEMP in
15.1 Normal Mode
(T = 125°C)
ITEMP = ±3 µA
VTEMP
1.4
1.9
V
A
15.2 Short current at TEMP
15.3 Temperature gradient
16 Wake Pin
VTEMP = 0V
ITEMP
VTC,TEMP
–30
4.8
5.05
–15
µA
A
5.3
mV/k C
16.1 High-level input voltage
16.2 Low-level input voltage
16.3 Wake pull-up current
16.4
High-level leakage
current
Initializes a wake-up signal
VS < 27V, VWake = 0V
VS = 27V; VWake = 27V
VWAKEH VS – 1V
VS + 0.3V V
A
VWAKEL
–27
VS – 3.3V V
A
IWAKE
–30
–10
µA
A
IWAKEL
–5
+5
µA
A
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
21
4887D–AUTO–12/06
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