SP690A Datasheet, PDF (8/16 Pages) Sipex Corporation – Low Power Microprocessor Supervisory with Battery Switch-Over

PFI
+1.3V
+1.2V
3V
PFO
0V
VCC = 5V
VBATT = 0V
+5V
VCC = +5V
TA = +25 C
PFI
PFO
+1.25V
30pF
1KΩ
2µs/div
Figure 8A. Power-Fail Comparator Response Time (RISE)
Figure 8B. Circuit for the Power-Fail Comparator
Response Time (RISE)
+5V
VCC
0V
+5V
RESET*
0V
+5V
RESET**
0V
tRS
3.0V
+5V
VOUT
3.0V
0V
+5V
PFO
0V
VBATT = PFI = 3.0V
*SP690A/692A/802L/802M
**SP805L/805M
Figure 9. Timing Diagram
Date: 11/29/04
SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over
8
© Copyright 2004 Sipex Corporation