Features: Precision 2.5 V to 5 V power supply monitor7 reset threshold options: 2.19 V to 4.63 V140 ms (min) reset timeoutWatchdog timer with 1.6s timeout (ADM823, ADM824)Manual reset input (ADM823, ADM825)Push-pull output stages:RESET (ADM823)RESET, RESET (ADM824/ADM825)Low power consumption (3 A...
ADM825: Features: Precision 2.5 V to 5 V power supply monitor7 reset threshold options: 2.19 V to 4.63 V140 ms (min) reset timeoutWatchdog timer with 1.6s timeout (ADM823, ADM824)Manual reset input (ADM823,...
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The ADM823/ADM824/ADM825 are supervisory circuits which 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 iADM823/ADM824/ADM825 fails to strobe within a preset timeout period. A reset signal can also be asserted by means of 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.
Each part of ADM823/ADM824/ADM825 is 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 (min) and 1.6s (typ), respectively.
The ADM823/ADM824/ADM825 are available in 5-lead SC70 and SOT-23 packages and typically consume only 3 A, making them suitable for use in low power portable applications.