Watchdog timers are standalone devices that can trigger a high priority interrupt on the microcontroller or microprocessor to take an appropriate action, such as system reboot. These devices are a robust, reliable means of monitoring software code execution, or hardware failures, and require high security level of applications.
Feature
- Precision VCC monitoring of 5, 3.3, 3, or 2.5 V power supplies
- RST outputs (active low, push-pull or open drain)
- RST outputs (active high, push-pull)
- Reset pulse width of 1.4 ms, 200 ms and 240 ms (typ.)
- Watchdog timeout period of 1.6 s (typ.)
- Manual reset input (MR)
- Low supply current - 3 μA (typ.)
- GuaranteedRST(RST) assertion down to VCC= 1.0 V
- Operating temperature: –40 to +85 °C (industrial grade)
- RoHS complianceLead-free components are compliant with the RoHS directive
