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SP690ACP

Low Power Microprocessor Supervisory with Battery Switch-Over

Signal Processing Technologies 

VCC

+5V

+4V

RESET

+5V

0V

2µs/div

Figure 5A. SP690A RESET Response Time

+5V

VCC

+4V

VCC

TA = +25 C

VCC

10KΩ

RESET

GND

30pF

Figure 5B. Circuit for the SP690A/802L RESET

Response Time

VCC

VCC

RESET

+4V

0V

2µs/div

Figure 6A. SP805L RESET Response Time

+1.3V

PFI

+1.2V

5V

PFO

VCC = 5V

VBATT = 0V

0V

RESET

VBATT

GND

330pF 10KΩ

Figure 6B. Circuit for the SP805 RESET

Response Time

+5V

VCC = +5V

TA = +25 C

PFI

1KΩ

PFO

+1.25V

30pF

500ns/div

Figure 7A. Power-Fail Comparator Response Time (FALL)

Figure 7B. Circuit for the Power-Fail Comparator

Response Time (FALL)

Date: 11/29/04

SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over

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© Copyright 2004 Sipex Corporation

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