ADM824LYRJZ-REEL7
数据手册.pdf监控电路 Watchdog Supervisor with MR - IC.
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**
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- Microprocessor systems
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- Computers
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- Controllers
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- Intelligent instruments
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- Portable equipment
### Features and Benefits
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- Precision 2.5 V to 5 V power supply monitor
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- 7 reset threshold options: 2.19 V to 4.63 V
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- 140 ms minimum reset timeout
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- Manual reset input
ADM823, ADM825
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- Push-pull output stages
RESET ADM823 RESET,
RESET ADM824/ADM825
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- Watchdog timer with 1.6 sec timeout ADM823, ADM824
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- Low power consumption 5 μA
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- See Data Sheet for Additional Information
