The MAX1232 microprocessor (µP) supervisory circuit
provides µP housekeeping and power-supply supervision
functions while consuming only 1/10th the power of
the DS1232. The MAX1232 enhances circuit reliability
in µP systems by monitoring the power supply, monitoring
the software execution, and providing a debounced
manual reset input. The MAX1232 is a plug-in upgrade
of the Dallas DS1232.
A reset pulse of at least 250ms duration is supplied on
power-up, power-down, and low-voltage brownout conditions
(5% or 10% supply tolerances can be selected
digitally). Also featured is a debounced manual reset
input that forces the reset outputs to their active states
for a minimum of 250ms. A digitally programmable
watchdog timer monitors software execution and can
be programmed for timeout settings of 150ms, 600ms,
or 1.2s. The MAX1232 requires no external components.
Key Features
Applications/Uses
Consumes 1/10th the Power of the DS1232
Precision Voltage Monitor—Adjustable +4.5V or
+4.75V
Power-OK/Reset Pulse Width—250ms Min
No External Components
Adjustable Watchdog Timer—150ms, 600ms, or
1.2s
Debounced Manual Reset Input for External
Override
Available in 8-Pin PDIP/SO and 16-Pin Wide SO
Packages
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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