ADM823 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADM823
Manufacturer

ADI
ChipWorker Part#

CW389414360
Description

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

Datasheet

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ADM823 Specifications

Attribute	Attribute Value

Part Number	ADM823
Manufacturer	ADI
ChipWorker Part#	CW389414360
Documentation	Datasheet
	expand all
Product Lifecycle Status	Active

Product Description

Product Details
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
### Features and Benefits
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)
Low power consumption (5 μA)
See Data Sheet for Additional Information

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