SP690T/S/R DS/10

SP690T/S/R, 802/T/S/R, 804T/S/R, 805T/S/R Low Power Microprocessor Supervisory

© Copyright 2000 Sipex Corporation

10

Figure 16A. SP805L RESET Response Time

Figure 16B. Circuit for the SP805 RESET Response

Time

GND

RESET

330pF

10K

Ω

Figure 17B. Circuit for the Power-Fail Comparator

Response Time (fall)

Figure 17A. Power-Fail Comparator Response Time (fall)

30pF

1K

Ω

PFO

+1.25V

+5V

PFI

Figure 18A. Power-Fail Comparator Response Time (rise)

Figure 18B. Circuit for the Power-Fail Comparator

Response Time (rise)

30pF

1K

Ω

PFO

+1.25V

+5V

PFI

0V

PFI

1.3V

1.2V

5V

500ns / div

PFO

V

= 0

V

BATTERY

2

1

T

1

1.3V

1.2V

V

= 0

V

BATTERY

PFI

PFO

500ns / div

0V

[

T

]

1

T

V

CC

1V / div

3.1V

2V

10

µs / div

RESET