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MIC1232

5V Voltage Supervisor w/ Manual Reset, Watchdog and Dual Rest Outputs

Status: In Production

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, <18µA typical
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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 time, 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 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 with in the watchdog timeout period. The watchdog timeout period is selectable with nominal period of 150, 600, 1200 milliseconds.

Additional 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, <18µA typical
Parametrics
Name
Value
Product Type
Supervisor
Watchdog Timer
Yes
Operating Temp. Range (°C)
-40 to 85
Vcc Range (V)
4.5 - 5.5
Nominal Reset Voltage (V)
4.37, 4.62
Reset Type
Active Low/High or High/Low
Output
Push-Pull
Typical Reset Pulse Width (ms)
250
Typical Supply Current (µA)
18

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC1232MY
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC1232MY-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC1232NY
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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