ber of AATI鈥檚 Total Power Management ICs鈩?/div>
(TPMIC鈩? product family. It is a fully integrated
device for monitoring microprocessor activity,
external reset, and power supply conditions. The
device holds the microprocessor in a reset condi-
tion for a minimum of 250ms while V
CC
is estab-
lished to ensure correct system start-up. A manual
reset can be initiated via a de-bounced input pin.
As an additional level of protection, the AAT3532
includes a watchdog timer which requires a period-
ic strobe input from the microprocessor to ensure
correct operation. The AAT3532 has a programma-
ble watchdog timer and voltage tolerance level.
The quiescent supply current is extremely low, typ-
ically 23碌A(chǔ).
The AAT3532 is available in an 8-pin SOP package
specified over -40擄 to 85擄C temperature range.
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
PowerManager
鈩?/div>
Adjustable 4.5V or 4.75V Voltage Monitor
250ms (min) Reset Pulse Width
Low quiescent current: typically 23碌A(chǔ)
Adjustable Watchdog Timer (150ms, 600ms,
or 1200ms)
De-bounced Manual Reset Input
Operates down to 20ns strobe input pulse
width
No external components
Temp range -40擄 to 85擄C
Standard 8 pin SOP package
Pin compatible with MAX1232
Preliminary Information
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Computers
Controllers
Telecom Equipment
Embedded Systems
Intelligent Instrumentation
Automotive
Typical Application
V
DD
V
CC
PBRST
RST
RESET
INPUT
V
DD
AAT3532
TD
RST
碌
P
I/O
ST
TOL
GND
3532.2001.11.0.9
1
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