ADM824
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ADM824

Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $0.67
Features
  • Precision 2.5 V to 5 V power supply monitor
  • 7 reset threshold options:
    2.19 V to 4.63 V
  • 140 ms (minimum) reset timeout
  • Manual reset input
    (ADM823, ADM825)
  • Push-pull output stages 
    RESET (ADM823) RESET,
    RESET (ADM824/ADM825)
  • Watchdog timer with 1.6 sec timeout (ADM823, ADM824)
  • See Data Sheet for Additional Information
Additional Details
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The ADM823 / ADM824 / ADM825 are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. In addition to 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 three parts feature different combinations of watchdog input, manual reset input, and output stage configuration, as shown in Table 1.

These parts are available in a choice of seven reset threshold options ranging from 2.19 V to 4.63 V. The reset and watchdog timeout periods are fixed at 140 ms (minimum) and 1.6 sec (typical), respectively.

The ADM823 / ADM824 / ADM825 are available in 5-lead SC70 and SOT-23 packages and typically consume only 5 μA, making them suitable for use in low power, portable applications.

APPLICATIONS

  • Microprocessor systems
  • Computers
  • Controllers
  • Intelligent instruments
  • Portable equipment
Part Models 4
1ku List Price Starting From $0.67

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADM824LYRJZ-REEL7
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ADM824RYKSZ-REEL7
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ADM824SYKSZ-REEL7
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ADM824SYRJZ-REEL7
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Product Lifecycle

PCN

May 20, 2024

- 23_0143

Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process 

ADM824LYRJZ-REEL7

PRODUCTION

ADM824RYKSZ-REEL7

PRODUCTION

ADM824SYKSZ-REEL7

PRODUCTION

ADM824SYRJZ-REEL7

PRODUCTION

Feb 4, 2010

- 10_0009

Halogen Free Material Change for SOT_23 Products

Filter by Model

reset

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Part Models

Product Lifecycle

PCN

May 20, 2024

- 23_0143

arrow down

Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process 

ADM824LYRJZ-REEL7

PRODUCTION

ADM824RYKSZ-REEL7

PRODUCTION

ADM824SYKSZ-REEL7

PRODUCTION

ADM824SYRJZ-REEL7

PRODUCTION

Feb 4, 2010

- 10_0009

arrow down

Halogen Free Material Change for SOT_23 Products

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