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Datasheet Microchip MIC1232


The MIC1232 is a multifunction circuit which monitors microprocessor activity, external reset and power supplies in microprocessor based systems


  • Download » Datasheet PDF, 201 Kb, Revision: 11-05-2015
    MIC1232 - 5V Voltage Supervisor w/ Man Reset, Watchdog Timer & Dual Reset Output
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    5V Voltage Supervisor with Manual Reset,
    Watchdog Timer and Dual Reset Outputs General Description Features The MIC1232 is a low-current microprocessor supervisor
    for monitoring 5V systems. The device features logic
    selectable (TOL) reset thresholds of 5% or 10% of 5V; a
    pushbutton reset input (/PBRST); a watchdog timer with
    three-state selectable (TD) timeout periods of 150ms,
    600ms, or 1.2s; a fixed reset timeout period of 250ms
    (min); and active-low open-drain reset (/RST) and activehigh push-pull reset (RST) outputs. The /RST output
    maintains a valid reset condition for VCC as low as 1.4V.
    The MIC1232 asserts a reset condition if the supply
    voltage drops below the reset threshold, the pushbutton
    reset is asserted low, or the watchdog timer does not see
    a high-to-low transition on the watchdog timer input within
    the watchdog timer period. A reset condition is held for the
    reset timeout period of 250ms (min) after the pushbutton
    input is released or after the supply voltage increases
    above the reset threshold voltage.
    The MIC1232 is a drop-in replacement for the DS1232,
    MAX1232, and TC1232. It consumes a low 18ВµA (typ) of
    supply current, 40ВµA (max). This is one-tenth the max
    current of the DS1232, and one-quarter the max current of
    the MAX1232 and TC1232. It operates over the –40C to ...



Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)




Manual ResetNoNoNo
Nominal Reset Voltage, V4.37, 4.624.37, 4.624.37, 4.62
Operating Temp. Range, °C-40 to 85-40 to 85-40 to 85
Operating Temperature Range, °C-40 to +85-40 to +85-40 to +85
Power FailNoNoNo
Product TypeSupervisorSupervisorSupervisor
Reset TypeActive Low/High or High/LowActive Low/High or High/LowActive Low/High or High/Low
Typical Reset Pulse Width, ms250250250
Typical Supply Current, µA181818
VCC Range, V4.5 - 5.54.5 - 5.54.5 - 5.5
Watchdog TimerYesYesYes

Eco Plan


Moldel Line

Series: MIC1232 (3)

Manufacturer's Classification

  • Power Management > Voltage Detectors

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