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H6006A3SO8A Datasheet(PDF) 1 Page - EM Microelectronic - MARIN SA |
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H6006A3SO8A Datasheet(HTML) 1 Page - EM Microelectronic - MARIN SA |
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1 / 8 page  R H6006 Copyright © 2004, EM Microelectronic-Marin SA 1 www.emmicroelectronic.com 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 power- on 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 reset initialization, advanced power-fail warning ( SAVE ), reset at power-down ( RES ) VDD monitoring: power-on reset initialization enabled only if VDD ≥ 3.5 V Internal voltage reference Works down to 1.5 V supply voltage Push-pull or Open drain outputs Low current consumption Available for normal and extended temperature range SO8 package Applications Microprocessor and microcontroller systems Point of sales equipment Telecom products Automotive subsystems Typical Operating Configuration Pin Assignment EM MICROELECTRONIC - MARIN SA Voltage Regulator 5 V GND Fig. 1 Micro- processor I/O VDD TO SAVE RES VIN TCL VSS INT NMI RES SO8 VDD H6006 Fig. 2 VIN TCL RC VSS TO SAVE RES |
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