R
EM MICROELECTRONIC - MARIN SA
www.DataSheet4U.com
H6006
Failsafe Watchdog
Description
The H6006 is a monolithic low...
R
EM MICROELECTRONIC - MARIN SA
www.DataSheet4U.com
H6006
Failsafe Watchdog
Description
The H6006 is a monolithic low power
CMOS device combining a programmable digital timer and a series of
voltage comparators on the same chip. The device is specially convenient for Watch-Dog functions such as microprocessor and supply
voltage monitoring. The watchdog part is designed to be used in all applications where it is important that after the occurrence of a malfunction the microprocessor system is stopped to avoid further damage. The timeout warning signal ( TO ) can be used to try to reactivate the system before halting it. The
voltage monitoring part provides double security by combining both unregulated
voltage and regulated
voltage monitoring simultaneously. The H6006 initializes the poweron reset after VIN reached VSH and VDD raises above 3.5 V. If VIN drops below VSL, the H6006 gives an advanced warning signal for register saving and if the
voltage drops further below VRL, RES goes active. The H6006 functions at any supply
voltage down to 1.5 V and is therefore particularly suited for start-up and shut-down control of microprocessor systems
Features
Failsafe watchdog function: timeout warning after 1st timeout period, reset after 2nd timeout period, reset remains active to avoid further failures Standard timeout period and power-on reset time (10 ms), externally programmable if required VIN monitoring with 3 standard or programmable trigger
voltages for: power-on re...