sp690acp Exar Corporation, sp690acp Datasheet - Page 8

• Manufacturer Part Number: sp690acp
• Description: Low Power Microprocessor Supervisory With Battery Switch-over
• Manufacturer: Exar Corporation

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