SP690R 查看數據表（PDF） - Signal Processing Technologies

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SP690R

3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over

Signal Processing Technologies 

1V / div

3.1V

2V

0V

[

T

]

VCC

1

RESET

T

10 µs / div

Figure 16A. SP805L RESET Response Time

1.3V

PFI

1.2V

VCC= 5V

VBATTERY = 0

PFO

5V

0V

500ns / div

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

VCC

VCC

RESET

VCC

10KΩ

GND

330pF

Figure 16B. Circuit for the SP805 RESET Response

Time

+5V

VCC = +5V

TA = +25 C

PFI

1KΩ

PFO

+1.25V

30pF

Figure 17B. Circuit for the Power-Fail Comparator

Response Time (fall)

1

1.2V

1.3V

PFI

PFO

VCC= 5

VBATTERY = 0

1

2

T

500ns / div

+5V

VCC = +5V

TA = +25 C

PFI

PFO

+1.25V

30pF

1KΩ

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

Figure 18B. Circuit for the Power-Fail Comparator

Response Time (rise)

SP690T/S/R JAN 30-06 SP690T/S/R, 802/T/S/R, 804T/S/R, 805T/S/R Low Power Microprocessor Supervisory

10

© 2006 Sipex Corporation

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