Rainbow-electronics ATA6624 Bedienungsanleitung PDF herunterladen (Seite 22)

4986F–AUTO–07/08

ATA6622/ATA6624/ATA6626

13 Watchdog Oscillator

13.1

Voltage at WD_OSC in

Normal Mode

WD_OSC

= –200 µA

≥ 4V

WD_OSC

1.13 1.23 1.33 V A

13.2

Positive values of

resistor

OSC

34 120 kΩ A

13.3 Oscillator period R

OSC

= 34 kΩ t

OSC

10.65 13.3 15.97 µs A

13.4 Oscillator period R

OSC

= 51 kΩ t

OSC

15.68 19.6 23.52 µs A

13.5 Oscillator period R

OSC

= 91 kΩ t

OSC

26.83 33.5 40.24 µs A

13.6 Oscillator period R

OSC

= 120 kΩ t

OSC

34.2 42.8 51.4 µs A

14 Watchdog Timing Relative to t

OSC

14.1

Watchdog lead time after

Reset

7895 cycles A

14.2

Watchdog closed

window

1053 cycles A

14.3 Watchdog open window t

1105 cycles A

14.4

Watchdog reset time

NRES

nres

3.244.8msA

15 KL_15 Pin

15.1

High-level input voltage

= 50 kΩ

Positive edge initializes a

wake-up

KL_15H

0.3V

15.2

Low-level input voltage

= 50 kΩ

KL_15L

–1 +2 V A

15.3 KL_15 pull-down current

< 27V

KL_15

= 27V

KL_15

50 60 µA A

15.4 Internal debounce time Without external capacitor Tdb

KL_15

80 160 250 µs A

15.5

KL_15 wake-up time

= 50 kΩ, C = 100 nF)

= 50 kΩ, C = 100 nF Tw

KL_15

0.424.5msC

16 WAKE Pin

16.1 High-level input voltage V

WAKEH

– 1V

0.3V

16.2 Low-level input voltage Initializes a wake-up signal V

WAKEL

–1

–

3.3V

16.3 WAKE pull-up current

< 27V

WAKE

= 0V

WAKE

–30 –10 µA A

16.4

High-level leakage

current

= 27V

WAKE

= 27V

WAKEL

–5 +5 µA A

16.5

Time of low pulse for

wake-up via WAKE pin

WAKE

= 0V I

WAKEL

30 70 150 µs A

8. Electrical Characteristics (Continued)

5V < V

< 27V, -40°C < Tj < 150°C, unless otherwise specified. All values refer to GND pins

No. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type*

*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 28 29

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