DESCRIPTION
The DS1830 Programmable MicroMonitor monitors three vital conditions for a microprocessor: power supply, software execution, and external override. All monitored parameters are programmable, with values stored in nonvolatile EPROM. This allows parameters such as reset time, watchdog timeout period, and power supply tolerance to be programmed into the device and tailored to the application circuit and microprocessor which is to be monitored.

FEATURES
• Halts and restarts an out–of–control microprocessor
• Holds microprocessor in check during power transients
• Automatically restarts microprocessor after power failure
• Monitors pushbutton for external override
• Major function parameters programmable through simple 3–wire interface, stored in nonvolatile memory
• Reset time programmable from 5 ms to 2.5 seconds
• Watchdog timeout programmable from 25 ms to 12.5 seconds
• Power trip points programmable 4.75V to 2.7V
• Pin compatible with the DS1232
• Low cost 8–pin DIP and 8–pin SOIC packages available
• Operating temperature of –40°C to +85°C