參數(shù)資料
型號(hào): ISL88708
廠商: Intersil Corporation
英文描述: UP Supervisor with Watchdog Timer,Power-Fail Comparator, Manual Reset and Adjustable Power-On Reset
中文描述: 與看門(mén)狗定時(shí)器,電源故障比較器,手動(dòng)復(fù)位和可調(diào)電源監(jiān)控復(fù)位,
文件頁(yè)數(shù): 9/13頁(yè)
文件大?。?/td> 518K
代理商: ISL88708
9
FN8092.0
October 18, 2005
Figures 10 - 14, illustrate the basic IC functions and
performance of the 3 implementations.
Special Application Considerations
Using good decoupling practices will prevent transients
(i.e. due to switching noises and short duration droops in the
supply voltage) from causing unwanted resets.
When using the C
POR
pin, avoid stray capacitance during
layout as much as possible in order to minimize its effect on
the t
POR
timing.
FIGURE 10. RESET & RESET ASSERTION
FIGURE 11. RESET ASSERTION vs CPOR
V
DD
RESET
RESET
C
POR
= OPEN
t
POR = 213ms
V
DD
RESET
50pF
1.5s
OPEN
172ms
4.7pF
312ms
15pF
588ms
33pF
1.1s
FIGURE 12. RESET & RESET DEASSERTION
FIGURE 13. 5V PFI TO PFO RESPONSE
V
DD
RESET
RESET
PFO
PFI
PFI Vth
ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813
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