Description
The HA16129FPJ is a watchdog timer IC that monitors a microprocessor for runaway. In addition to the watchdog timer function, the HA16129FPJ also provides a function for supplying a high-precision stabilized power supply to the microprocessor, a power on reset function, a power supply voltage monitoring function, and a fail-safe function that masks the microprocessor outputs if a runaway is detected.

Features
• High-precision output voltage: 5.0 V ± 1.5%
• The WDT supports both frequency and duty detection schemes.
• High-precision power supply monitoring function: 4.625 V ± 0.125 V
• Built-in OUTE function
• All functions can be adjusted with external resistors and/or capacitors.