ADM8322 Supervisory Circuit with Manual Reset, Active-Low Open-Drain and Active-High Push-Pull Reset Outputs

The ADM8316 / ADM8318 / ADM8319 / ADM8320 / ADM8321 / ADM8322 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 switch through a manual reset input. The six devices feature different combinations of watchdog input, manual reset input, and output stage configuration.

Each device is available in a choice of 27 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, 1.6 sec, and 25.6 sec (typical).

The ADM8316 / ADM8318 / ADM8319 / ADM8320 / ADM8321 / ADM8322 are available in 5-lead SOT-23 packages and typically consume only 10 µA, making them suitable for use in low power, portable applications.

Applications
  • Automotive infotainment
  • Microprocessor systems
  • Computers
  • Controllers
  • Intelligent instruments
  • Portable equipment
Features and Benefits
  • 27 reset threshold options
    • 2.5 V to 5 V in 100 mV increments
  • 2.5 V to 5 V in 100 mV increments
  • 4 reset timeout options
    • 1 ms, 20 ms, 140 ms, and 1120 ms (minimum)
  • 1 ms, 20 ms, 140 ms, and 1120 ms (minimum)
  • 4 watchdog timeout options
    • 6.3 ms, 102 ms, 1.6 sec, and 25.6 sec (typical)
  • 6.3 ms, 102 ms, 1.6 sec, and 25.6 sec (typical)
  • Manual reset input
  • Multiple reset output options
  • Low power consumption
  • Specified over wide temperature range (−40°C to +125°C)
  • Qualified for automotive applications
  • 5-lead SOT-23 package
  • Power Management
    Data Sheets
    Documentnote
    ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322: Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23 Data Sheet (Rev. B)PDF 298.17 K
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADM8322WC26ARJZR7 Production5 ld SOT-23REEL 0-40 to 125C00Y
    ADM8322WC46ARJZR7 Production5 ld SOT-23REEL 3000-40 to 125C00.69Y
    Reference Materials
    ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322: Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23 Data Sheet (Rev. B) adm8316
    ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322:内置看门狗和手动复位的监控电路,采用5引脚SOT-23封装 (Rev. 0) adm8316
    Supervisory Devices Complementary Parts Guide for Altera FPGAs adm690
    Supervisory Devices Complementary Parts Guide for Xilinx FPGAs adm690
    Voltage Monitoring Products Applications Guide adm6317