SAN JOSE, CALIF. IMP Inc. has introduced the IMP-1232LP, a microprocessor supervisory circuit with a user-selectable watchdog time-out period and a selectable threshold level.
The part monitors the 5-V power supply and will restart a hung-up microprocessor. Its supply current is 30 microamps max, which IMP said is 40 percent lower than that of competing parts.
The timeout period can be 150 ms, 600 ms or 1.2 seconds through a time-delay control pin. Users can select the power supply reset trip point level at either 5 percent (4.74 V maximum threshold level) or 10 percent (4.49 V) below the nominal 5-V supply with a tolerance select pin. The IMP1232LP is available in 8-pin SO, DIP and MicroSO and 16-pin SO packages. Prices in 1,000-piece quantities start at 70 cents.
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EETInfo No. 602