AAT3532 Advanced Analogic Technologies, Inc., AAT3532 Datasheet - Page 2

• Manufacturer Part Number: AAT3532
• Description: Aat3532 | Micropower Supervisory Circuit With Delay, Manual Reset, And Watchdog
• Manufacturer: Advanced Analogic Technologies, Inc.

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