參數(shù)資料
型號(hào): TLE6363
廠商: INFINEON TECHNOLOGIES AG
英文描述: Multifunctional Voltage Regulator and Watchdog
中文描述: 多功能穩(wěn)壓器和看門狗
文件頁數(shù): 12/28頁
文件大?。?/td> 278K
代理商: TLE6363
TLE 6363
Data Sheet V 1.1
12
2000-11-8
Circuit Description
Below some important sections of the
TLE 6363
are described in more detail.
Power On Reset
In order to avoid any system failure, a sequence of several conditions has to be passed.
In case of
V
CC
power down (
V
CC
<
V
RT
for
t
>
t
RR
) a logic LOW signal is generated at the
pin RO to reset an external microcontroller. When the level of
V
CC
reaches the reset
threshold
V
RT
, the signal at RO remains LOW for the Power-up reset delay time
t
RD
before switching to HIGH. If
V
CC
drops below the reset threshold
V
RT
for a time extending
the reset reaction time
t
RR
, the reset circuit is activated and a power down sequence of
period
t
RD
is initiated. The reset reaction time
t
RR
avoids wrong triggering caused by short
“glitches” on the
V
CC
-line.
Figure 3
Reset Function
AET02950
L
H
RO
V
CC
Invalid
RT
V
typ. 4.65 V
<
RR
t
<
RD
t
Start-Up
ON Delay
Invalid
Invalid
ON Delay
Started
Stopped
RD
t
RR
t
RD
t
t
t
Power
Start-Up
Normal
Failed
N
Failed
Normal
1 V
ON Delay
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