Product Summary

The MIC1832M 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 MIC1832M 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 VCC rises above the threshold voltage (2.55V or 2.88V). The RST pin will remain logic low with VCC 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 a nominal periods of 150, 600, or 1200 milliseconds.

Parametrics

MIC1832M absolute maximum ratings: (1)Terminal Voltage VCC: -0.3V to 7.0V; (2)Terminal Voltage All Other Inputs: -0.3V to (VCC + 0.3V); (3)Input Current VCC: 250mA; (4)Input Current Gnd, All Other Inputs: 25mA; (5)Operating Temperature Range: -40℃ to 85℃; (6)Storage Temperature Range: -65℃ to 150℃; (7)Lead Temperature (Soldering - 10 sec.): 300℃; (8)Power Dissipation: 700mW.

Features

MIC1832M features: (1)Power OK/Reset Time Delay, 250ms min.; (2)Watchdog Timer, 150ms, 600ms, or 1.2s typical; (3)Precision Supply Voltage Monitor, Select Between 5% or 10% of Supply Voltage; (4)Available in 8-pin Surface Mount (SO); (5)Debounced External Reset Input; (6)Low Supply Current, < 18μA Typ.

Diagrams

MIC1832M pin configuration

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
MIC1832M
MIC1832M

IC SUPERVISOR 2.88/2.55V 8-SOIC
Data Sheet
Negotiable 
MIC1832M TR
MIC1832M TR

IC SUPERVISOR 2.88/2.55V 8-SOIC
Data Sheet
Negotiable 
MIC1832MY TR
MIC1832MY TR

IC SUPERVISOR 2.88/2.55V 8-SOIC
Data Sheet
0-2500: $0.77
MIC1832MY
MIC1832MY

IC SUPERVISOR 2.88/2.55V 8-SOIC
Data Sheet
0-1: $1.38
1-25: $1.10
25-100: $0.86
100-250: $0.81
250-500: $0.80