ADM8613Z232ACBZ-R7

are voltage supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. Apart from providing power-on reset signals, an onchip 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 ultralow power consumption of these devices makes them suitable for power efficiency sensitive systems, such as batterypowered portable devices and energy meters. The ADM8611, ADM8612, ADM8613, and ADM8615 can reset on demand through the manual reset input. The watchdog function on the ADM8613, ADM8614, and ADM8615 monitors the heartbeat of the microprocessor through the WDI pin. The ADM8613 and ADM8614 have a watchdog disable input, which allows the user to disable the watchdog function, if required. The ADM8614 also has a watchdog timeout extension input, allowing the watchdog timeout to be extended from 1.6 sec to 100 sec.

Applications

• Portable/battery-operated equipment
• Microprocessor systems
• Energy metering
• Energy harvesting

Key features

• Watchdog timer (ADM8613/ADM8614/ADM8615)
• Watchdog function disable input (ADM8613/ADM8614 only)
• Watchdog timeout extension input (ADM8614 only)
• Active low, open-drain RESET output
• Power supply glitch immunity
• Available in a 1.46 mm×0.96 mm WLCSP
• Operational temperature range: -40°C to +85°C