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AAT3532 Datasheet(PDF) 2 Page - Advanced Analog Technology, Inc.

Part No. AAT3532
Description  MicroPower™ Microprocessor Reset Circuit
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Manufacturer  AAT [Advanced Analog Technology, Inc.]
Direct Link  http://www.aatech.com.tw
Logo AAT - Advanced Analog Technology, Inc.

AAT3532 Datasheet(HTML) 2 Page - Advanced Analog Technology, Inc.

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Pin Descriptions
Pin Programming Selections
Table 1: TD Pin Programming for Watchdog Timeout Selections.
Table 2: Reset Voltage Threshold Programming Selections.
Pin Configuration
SOP-8
(Top View)
ST
V
CC
RST
RST
PBRST
TD
TOL
GND
1
2
3
4
8
7
6
5
TOL Pin
Tolerance
V
CC
10%
GND
5%
Timeout
TD Pin
Min
Typ
Max
GND
62.5ms
150ms
250ms
Float
250ms
600ms
1000ms
V
CC
500ms
1200ms
2000ms
Pin #
Symbol
Function
1
PBRST
Push-button reset input. A de-bounced active low input for manual reset. Guaranteed
to recognize inputs 20ms or greater.
2
TD
Watchdog time delay set input. See Table 1 for watchdog timeout selections.
3
TOL
Tolerance set. Input selects 5% or 10% threshold detection.
4
GND
IC ground connection.
5
RST
Reset output (active high). Activated when either: V
CC falls below the reset voltage
threshold; PBRST is forced low; ST is not strobed within the minimum timeout period;
or during power-up.
6
RST
Reset output (active low, open drain). Inverse of RST.
7
ST
Strobe input to watchdog timer. A pulse is required within the watchdog timeout period
to prevent RST and RST entering active state.
8
VCC
5V supply.
AAT3532
MicroPower™ Microprocessor Reset Circuit
2
3532.2005.12.1.2


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