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MIC1202M3, MIC1206D-R15KT, MIC1232

Table of contents:
Info of MIC1202M3
Info of MIC1206D-R15KT
Info of MIC1232

MIC1202M3, MIC1206D-R15KT, MIC1232 Selling Leads, Datasheet

MFG:MICREL Package Cooled:SOT-223-3 D/C:09+

MIC1202M3, MIC1206D-R15KT, MIC1232 Picture

MIC1202M3, MIC1206D-R15KT, MIC1232 Datasheet download

Five Points

Part Number: MIC1202M3

MFG: MICREL

Package Cooled: SOT-223-3

D/C: 09+

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MIC1232 General Description

The MIC1232 is a multifunction circuit which monitors microprocessor activity, external reset and power supplies in microprocessor based systems. The circuit functions include a watchdog timer, power supply monitor, microprocessor reset, and manual pushbutton reset input.

The power supply line is monitored with a comparator and an internal voltage reference. /RST is forced low when an out-of-tolerance condition exists and remains asserted for at least 250ms after V_CC rises above the threshold voltage (4.5V or 4.75V). The /RST pin will remain logic low with V_CC as low as 1.4V.

The Watchdog input (/ST) monitors µP activity and will assert /RST if no µP activity has occurred within the watchdog timeout period. The watchdog timeout period is selectable with nominal periods of 150, 600, or 1200 milliseconds.

MIC1232 Maximum Ratings

Terminal Voltage
VCC, . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V
All Other Inputs . . . . . . . . . . . . -0.3V to (VCC + 0.3V)
Input Current
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250mA
Gnd, All Other Inputs . . . . . . . . . . . . . . . . . . . . 25mA

MIC1232 Features

` Power OK/Reset Time Delay, 250ms min.
` Watchdog Timer, 150ms, 600ms, or 1.2s typical
` Precision Supply Voltage Monitor, Select Between 5% or 10% of Supply Voltage
` Available in 8-pin Surface Mount (SO)
` Debounced External Reset Input
` Low Supply Current, < 18A Typ.

MIC1232 Connection Diagram

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