Microprocessor Supervisory Circuit

6

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____________________________Typical Operating Characteristics (continued)

1000

1

1

100

1000

OUTPUT CURRENT

10

100

10

VBATT = 0V

SLOPE = 0.8

Ω

1000

1

1

10

100

OUTPUT CURRENT

10

100

VBATT = 4.5V

SLOPE = 8

Ω

0

50

0

40

20

WATCHDOG TIMEOUT

vs. TIMING CAPACITOR

TIMING CAPACITOR (nF)

30

10

70 80 90 100

60

50

100

150

200

250

VBATT = 2.8V

0

4

0

100

50

CHIP-ENABLE PROPAGATION DELAY

vs. CE OUT LOAD CAPACITANCE

200

250

300

150

8

12

16

20

CE IN = 0V TO 5V

DRIVER SOURCE

IMPEDENCE = 50

Ω

0

4

8

15

BATTERY CURRENT

vs. INPUT SUPPLY VOLTAGE

04

3

2

12

16

20

VBATT = 2.8V,