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參數(shù)資料
| 型號(hào)： | AAT3524IGY-438-200-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 元件分類： | 復(fù)位半導(dǎo)體 |
| 英文描述： | MicroPower Microprocessor Reset Circuit |
| 中文描述： | 微功耗微處理器復(fù)位電路 |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大?。?/td> | 225K |
| 代理商： | AAT3524IGY-438-200-T1 |
Applications Information
Reset Output Options
The AAT3524 has an active low open drain output
and the AAT3520/2 have a push-pull output. The
AAT3524 may be used in multiple voltage systems,
with an external pull-up resistor. This allows the
AAT3524 to interface to microprocessors with high-
er supply voltages up to 5.5V (Figure 2). In the
event of a power down or brown-out condition the
reset signal remains valid until the V
CC
drops below
1.2V. To ensure validity down to ground an external
100k
resistor should be connected between the
RESET output and GND.
Supply Voltage Transient Behavior
In some cases fast negative transients of short dura-
tion can appear on the V
CC
power supply. The
AAT3520 series devices provide some immunity to
line transients which can generate invalid reset puls-
es. Figure 1 shows typical behavior to short duration
pulses verses RESET comparator overdrive. As
shown in the Maximum Transient Duration vs. Reset
Threshold Overdrive graph, when the transient volt-
age becomes larger, the time allowed before assert-
ing a reset becomes shorter. e.g. typically a transient
of 100mV below the reset threshold would have to
present for more than 50
μ
s to cause a reset.
Immunity can be increased by the addition of a small
by-pass capacitor of 0.1μF connected as close to
the V
CC
pin as possible.
AAT3520/2/4
MicroPower Microprocessor Reset Circuit
6
3520.2002.2.0.9
Figure 2: Using AAT3524 Open Drain Output with Multiple Supplies
AAT3524
5V
System
+3.3V
V
CC
V
CC
RESET
100k
GND
GND
RESET
INPUT
+5.0V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3526ICX-2.93-200-T1 | 制造商:Advanced Analogic Tech 功能描述:AAT3526 Series 2.93V 150ms Reset Timeout MicroPower Supervisory Circuit-SOT143-4 制造商:SKYWORKS SOLUTIONS 功能描述:AAT3526 Series 2.93V 150ms Reset Timeout MicroPower Supervisory Circuit-SOT143-4 |
| AAT3526ICX-3.08-200-T1 | 制造商:Advanced Analogic Tech 功能描述:AAT3526 Series 3.08V 150ms Reset Timeout MicroPower Supervisory Circuit-SOT143-4 制造商:SKYWORKS SOLUTIONS 功能描述:AAT3526 Series 3.08V 150ms Reset Timeout MicroPower Supervisory Circuit-SOT143-4 |
| AAT3528ICX-3.00-200-T1 | 制造商:Advanced Analogic Tech 功能描述:AAT3526 Series 3 V 150ms Reset Timeout MicroPower Supervisory Circuit-SOT143-4 制造商:SKYWORKS SOLUTIONS 功能描述:AAT3526 Series 3 V 150ms Reset Timeout MicroPower Supervisory Circuit-SOT143-4 |
| AAT3532IAS-T1 | 制造商:Skyworks Solutions Inc 功能描述:POWER MANAGEMENT IC |
| AAT3601IIH-T1 | 制造商:Skyworks Solutions Inc 功能描述:POWER MANAGEMENT IC |
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