VCC
VCC
VCC
[
T
]
1V / div
3.1V
VCC
1
2V
10KΩ
RESET
RESET
T
0V
330pF
GND
10 µs / div
Figure 16B. Circuit for the SP805 RESET Response
Time
Figure 16A. SP805L RESET Response Time
+5V
PFI
1.3V
1.2V
VCC = +5V
= 5V
VCC
TA = +25 C
VBATTERY
= 0
1KΩ
PFI
PFO
5V
PFO
0V
30pF
+1.25V
500ns / div
Figure 17B. Circuit for the Power-Fail Comparator
Response Time (fall)
Figure 17A. Power-Fail Comparator Response Time (fall)
1
+5V
1.3V
PFI
1.2V
= 5
VCC
VCC = +5V
TA = +25 C
VBATTERY
= 0
PFI
PFO
PFO
1KΩ
30pF
+1.25V
1
T
2
500ns / div
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
© 2006 Sipex Corporation
10
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