Product Summary

The MIC1232M 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 MIC1232M 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 (4.5V or 4.75V). 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 nominal periods of 150, 600, or 1200 milliseconds.

Parametrics

MIC1232M absolute maximum ratings: (1)Terminal Voltage VCC: -0.3V to 6.0V; (2)Terminal Voltage All Other Inputs: -0.3V to (VCC + 0.3V); (3)Input Current VCC: 250mA; (4)Input Current Gnd, All Other InputsL: 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

MIC1232M 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

MIC1232M pin configuration

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
MIC1232M
MIC1232M

IC SUPERVISOR MULTIFUNC 5V 8SOIC
Data Sheet
Negotiable 
MIC1232M TR
MIC1232M TR

IC SUPERVISOR MULTIFUNC 5V 8SOIC
Data Sheet
Negotiable 
MIC1232MY TR
MIC1232MY TR

IC SUPERVI MULTIFUNC 4.75V 8SOIC
Data Sheet
0-1: $1.22
1-10: $1.04
10-25: $0.94
25-100: $0.85
100-250: $0.77
250-500: $0.66
500-1000: $0.56
MIC1232MY
MIC1232MY

IC SUPERVISOR MULTIFUNCT 8-SOIC
Data Sheet
0-1235: $0.50