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Datasheet Microchip MIC1815


The MIC1815 is an inexpensive microprocessor supervisory circuit that monitors power supplies in microprocessor based systems


  • Download » Datasheet PDF, 236 Kb, Revision: 11-05-2015
    MIC1815 - Microprocessor Reset Circuit
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    MIC1815 Micrel MIC1815
    Microprocessor Reset Circuit General Description Features The MIC1815 is an inexpensive microprocessor supervisory
    circuit that monitors power supplies in microprocessor based
    The function of these devices is to assert a reset if the power
    supply drops below a designated reset threshold level. Several
    different reset threshold levels are available to accommodate
    10% or 20% drop in 3.3V powered systems.
    The MIC1815 has an active low /RESET output. The reset
    output is guaranteed to remain asserted for a minimum of
    100ms after VCChas risen above the designated reset threshold level. The MIC1815 comes in a 3-pin SOT-23 package. Precision voltage monitor for 10% or 20% drop in 3.3V
    power supplies /RESET remains valid with VCC as low as 1V 5ВµA supply current 100ms minimum reset pulse width No external components required Available in 3-pin SOT-23 package Ordering Information Applications Portable equipment
    Intelligent instruments
    Critical microprocessor power monitoring
    Embedded controllers Part Number Marking Threshold
    Voltage Operating Temp. Range Package Pb-Free MIC1815-10U ND 2.88V –40°C to +85°C SOT-23 No MIC1815-20U NE 2.55V –40°C to +85°C SOT-23 No MIC1815-10UY ND 2.88V –40°C to +85°C SOT-23 Yes MIC1815-20UY NE 2.55V –40°C to +85°C SOT-23 Yes Typical Application
    VCC VCC VCC MIC1815 µP RESET RESET Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 474-1000 fax + 1 (408) 944-0970 July 2005 1 MIC1815 MIC1815 Micrel Pin Configuration RESET 1 MIC1815 3 GND VCC 2 3-Lead SOT23 Pin Description
    Pin Number Pin Name 1 /RESET MIC1815 Pin Function
    /RESET goes low if VCC falls below the reset threshold and remains asserted for one reset timeout period (100ms min) after VCC exceeds the reset
    threshold. 2 VCC Power supply input. 3 GND IC ground pin 2 July 2005 MIC1815 Micrel Absolute Maximum Ratings(Note 1) Operating Ratings(Note 2) Terminal Voltage (VCC) .–0.3V to +6V
    Input Current (VCC). 20mA
    Output Current (/RESET) . 20mA ...



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




Manual ResetNoNo
Nominal Reset Voltage, V2.55, 2.882.55, 2.88
Operating Temp. Range, °C-40 to 85-40 to 85
Operating Temperature Range, °C-40 to +85-40 to +85
Power FailNoNo
Product TypeSupervisorSupervisor
Reset TypeActive LowActive Low
Typical Reset Pulse Width, ms100100
Typical Supply Current, µA55
VCC Range, V1.5 - 5.51.5 - 5.5
Watchdog TimerNoNo

Eco Plan


Moldel Line

Series: MIC1815 (2)

Manufacturer's Classification

  • Power Management > Voltage Detectors

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