ISL88705 INTERSIL [Intersil Corporation], ISL88705 Datasheet - Page 10

• Manufacturer Part Number: ISL88705
• Description: uP Supervisor with Watchdog Timer, Power-Fail Comparator, Manual Reset and Adjustable Power-On Reset
• Manufacturer: INTERSIL [Intersil Corporation]

generation capability via the C
capacitor to GND. This evaluation platform has an adjustable
SMD capacitor, C4 (8pF to 45pF) that allows easy evaluation
of this feature. Also unique to the ISL88707 and ISL88708
are both the RESET and RESET outputs, all other variants
having only one or the other.
Figures 10, 11, 12, 13 and 14 illustrate the basic IC functions
and performance of the 3 implementations.
OPEN
172ms
FIGURE 10. RESET AND RESET ASSERTION
FIGURE 11. RESET ASSERTION vs CPOR
V
4.7pF
312ms
DD
ISL88705, ISL88706, ISL88707, ISL88708, 8SL88716, ISL88813
15pF
588ms
RESET
t
POR = 213ms
10
POR
pin with an external
33pF
1.1s
C
V
DD
POR
= OPEN
RESET
RESET
50pF
1.5s
5.5V OV
FIGURE 12. RESET AND RESET DEASSERTION
V
DD
FIGURE 13. 5V PFI TO PFO RESPONSE
FIGURE 14. 5V OV/UV MONITORING
PFI
PFO
V
PFI Vth
DD
December 6, 2006
RESET
RESET
RESET
FN8092.3