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ADM6319:  Supervisory Circuit with Watchdog and Manual Reset in 5-Lead SOT-23

The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power- on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by an external push ...More

ADM6319:  Supervisory Circuit with Watchdog and Manual Reset in 5-Lead SOT-23

Product Description

The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power- on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by an external push button through a manual reset input. The seven parts feature different combinations of watchdog input, manual reset input, and output stage configuration, as shown in Table 1.

Each part is available in a choice of 26 reset threshold options ranging from 2.5 V to 5 V in 100 mV increments. There are also four reset timeout options of 1 ms, 20 ms, 140 ms, and 1120 ms (minimum) and four watchdog timeout options of 6.3 ms, 102 ms, 1600 ms, and 25.6 sec (typical).

The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are available in 5-lead SOT-23 packages and typically consume only 3 μA, making them suitable for use in low power portable applications.

Applications

  • Microprocessor systems
  • Computers
  • Controllers
  • Intelligent instruments
  • Portable equipment

    • Data Sheet, Rev. D, 8/08

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    • 26 reset threshold options
      2.5 V to 5 V in 100 mV increments
    • 4 reset timeout options
      1 ms, 20 ms, 140 ms, and 1120 ms (minimum)
    • 4 watchdog timeout options
      6.3 ms, 102 ms, 1600 ms, and 25.6 sec (typical)
    • Manual reset input
    • Reset output stages
      Push-pull active low
      Open-drain active low
      Push-pull active high
    • Low power consumption: 5 μA
    • Manual reset input
    • Power supply glitch immunity
    • Specified over industrial temperature range
    • 5-lead SOT-23 package
    • Watchdog Timer: No
    • # of Monitored Voltages: 1
    • Backup-Battery Switch: No
    • Manual Reset Capability: Yes
    • Package: SOT
    • Reset Threshold Summary: 26 Options--2.5 to 5V
    • Reset Output-Stage: Active-High/Push-Pull,Active-Low/Push-Pull
    • Min Reset Timeout (ms): 1,1120,140,20

    Functional Block Diagram for ADM6319

    Similar Products

    arrow View Full Interactive Product Selection Table
    Part# Reset Threshold Summary Min Reset Timeout (ms) Reset Output-Stage Manual Reset Capability Package Price* (1000-4999)
    ADM1810 4.35V & 4.62V 100 Active-Low/Push-Pull No SC70, SOT $0.46
    ADM1811 4.35V & 4.62V 100 Active-Low/Int-Pullup No SC70, SOT $0.46
    ADM1812 4.35V & 4.62V 100 Active-High/Push-Pull No SC70, SOT $0.46
    ADM1813 4.35V & 4.62V 100 Active-Low/Int-Pullup Yes SC70, SOT $0.39
    ADM1815 5 Options--2.18 to 3.06V 100 Active-High/Push-Pull No SC70, SOT $0.39
    ADM1816 5 Options--2.18 to 3.06V 100 Active-Low/Int-Pullup No SC70, SOT $0.46
    ADM1817 5 Options--2.18 to 3.06V 100 Active-High/Push-Pull No SC70, SOT $0.46
    ADM1818 5 Options--2.18 to 3.06V 100 Active-Low/Int-Pullup Yes SC70, SOT $0.45
    ADM6315 6 Options--2.63 to 4.63V 1, 1,120, 140, 20 Active-Low/Open-Drain Yes SOT $0.81
    ADM6319 26 Options--2.5 to 5V 1, 1,120, 140, 20 Active-High/Push-Pull, Active-Low/Push-Pull Yes SOT $0.50
    ADM6322 26 Options--2.5 to 5V 1, 1,200, 140, 20 Active-High/Push-Pull, Active-Low/Open-Drain Yes SOT $0.51
    ADM6384 31 Options--1.58 to 5.0V 1, 1,120, 140, 20 Active-Low/Push-Pull Yes SC70 $0.95
    ADM6711 6 Options--2.32 to 4.63V 140 Active-Low/Push-Pull Yes SC70 $0.26
    ADM6713 6 Options--2.32 to 4.63V 140 Active-Low/Open-Drain Yes SC70 $0.28
    ADM6825 9 Options--1.58 to 4.63V 140 Active-High/Push-Pull, Active-Low/Push-Pull Yes SOT -
    ADM698 4.65V 140 Active-High/Push-Pull, Active-Low/Push-Pull No DIP, SOIC $1.37
    ADM707 4.65V 160 Active-High/Push-Pull, Active-Low/Push-Pull Yes DIP, SOIC $0.97
    ADM708 4 Options--2.63 to 4.4V 160 Active-High/Push-Pull, Active-Low/Push-Pull Yes DIP, SOIC, SOP $0.85
    ADM709 5 Options--2.63 to 4.65V 140 Active-Low/Push-Pull No DIP, SOIC $0.71
    ADM803 6 Options--2.32 to 4.63V 140 Active-Low/Open-Drain No SC70 $0.26
    ADM809 7 Options--2.32 to 4.63V 140 Active-Low/Push-Pull No SC70, SOT $0.62
    ADM810 7 Options--2.32 to 4.63V 140 Active-High/Push-Pull No SC70, SOT $0.61
    ADM811 6 Options--2.32 to 4.63V 140 Active-Low/Push-Pull Yes SOT $0.46
    ADM812 6 Options--2.32 to 4.63V 140 Active-High/Push-Pull Yes SOT $0.46
    ADM825 7 Options--2.19 to 4.63V 140 Active-High/Push-Pull, Active-Low/Push-Pull Yes SC70, SOT $0.51
    ADM8698 4.65V 140 Active-High/Push-Pull, Active-Low/Push-Pull No DIP, SOIC $2.01
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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.