H6060

` Self recovering watchdog function: reset goes active after the 1st timeout period, reset goes inactive again after the 2nd timeout period, repeated active reset signal until the system recovers
` Standard timeout period and power-on reset time (100 ms), externally programmable if required
` Unregulated DC monitoring (VIN) with 3 standard or programmable trigger voltages for: power-on reset initialization, advanced power-fail warning (SAVE ),
reset at power-down (RES )
` Regulated DC monitoring (V_DD): power-on reset initialization enabled only if V_DD 3.5 V
` Internal voltage reference
` Works down to 1.6 V supply voltage
` Push-pull or Open drain outputs
` Low current consumption
` SO8 package

Stresses above these listed maximum ratings may cause permanent damages to the device. Exposure beyond specified operating conditions may affect device reliability or cause malfunction.

The H6060 is a monolithic low-power CMOS device combining a programmable timer and a series of voltage comparators on the same chip. The device is specially suited for watchdog functions such as microprocessor and supply voltage monitoring. If the P system malfunctions, the watchdog will recover it by issuing repeated active reset signals. The voltage monitoring part provides double security by combining both the unregulated voltage (V_IN) and the regulated voltage (V_DD) monitoring simultaneously. It initializes the power-on reset after V_IN reaches VSH (see table 4) and V_DD rises above 3.V. If VIN drops below VSL (see table 4), the H6060 gives an advanced warning signal for register saving and if the voltage drops further below VRL (see table 4), RES and RES go active. The H6060 functions at any supply voltage down to 1.6 V and is therefore particularly suited for start-up and shut-down control of microprocessor systems.