Analog Devices ADM823LYRJZ-R7

Processor Supervisor 4.63V 1V to 5.5V 5-Pin SOT-23 T/R

SUPERVISORY CIRCUIT WITH WATCHDOG AND MANUAL RESET IN 5-LEAD SOT-23 Power Supply Management Circuit, Fixed, 1 Channel, PDSO5

SUPERVISOR CIRCUIT, MPU, #1, SOT-23-5; Threshold Voltage: 4.63V; No. of Supervisors / Monitors: 1Monitors; Supply Voltage Min: 4.75V; Supply Voltage Max: 5.5V; Reset Type: Manual, Active-Low; Digital IC Case: SOT-23; No. of Pi

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 Data Sheet, Rev. B, 5/08