HomedatasheetMAX1232E

MAX1232E Datasheet

Supervisory Circuits
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Description

The MAX1232E microprocessor (µP) supervisory circuit provides µP housekeeping and power-supply supervi-sion 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 man-ual reset input that forces the reset outputs to their active states for a minimum of 250ms. A digitally pro-grammable watchdog timer monitors software execu-tion and can be programmed for timeout settings of 150ms, 600ms, or 1.2s. The MAX1232 requires no external components. MAX1232E Features• 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 PackagesMAX1232E Applications • Computers• Controllers• Intelligent Instruments• Automotive Systems• Critical µP Power Monitoring
Features

Parameters

[{"Name":"Number of Voltages Monitored","Value":"1"},{"Name":"Monitored Voltage","Value":"4.5 V, 4.75 V"},{"Name":"Undervoltage Threshold","Value":"4.5 V, 4.25 V"},{"Name":"Overvoltage Threshold","Value":"4.74 V, 4.49 V"},{"Name":"Overvoltage Threshold","Value":"4.74 V, 4.49 V"},{"Name":"Output Type","Value":"Active High, Active Low, Open Drain"},{"Name":"Manual Reset","Value":"Resettable"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information

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