Analog Devices ADM823TYRJZ-R7

Processor Supervisor 3.08V 1V to 5.5V 5-Pin SOT-23 T/R

MICROPROCESSOR-MPU SUPERVISORY CIRCUIT,; MICROPROCESSOR-MPU SUPERVISORY CIRCUIT, 5.5V, SOT-23-5; Threshold Voltage:3.08V; No. of Supervisors / Monitors:1; Supply Voltage Min:1.2V; Supply Voltage Max:5.5V; Reset Type:Manual, Active-Low; Digital IC Case:SOT-23; No. of Pins:5

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