Voltage Detector with Watchdog Function and ON/OFF Control
The XC6122 series are highly accurate, low power consumption CMOS voltage detectors with a watchdog function and ON/OFF control.
As the watchdog timeout period & release delay period is internally set the time can be fixed and it is possible to have a system monitor without the need for external components. By making use of the newly added EN/ENB pin the watchdog function can be turned OFF allowing the series to be used as a simple voltage detector.
With the XC6122 series, since the EN/ENB pin is internally pulled up to VIN or pulled down to VSS, it is possible to use the watchdog function even when the pin is OPEN. Detect voltage is fixed within a range of 1.6V~5.0V, selectable in 0.1V increments.
|Detect Voltage Range||1.6V～5.0V(0.1V increments)|
|Hysteresis Width||Detect Voltage×5%(TYP.)|
|Operating Voltage Range||1.0V～6.0V|
|Detect Voltage Temperature Characteristics||±100ppm/℃(TYP.)|
|Output Configuration||N-channel open drain|
|Watchdog Pin||Monitors CPU|
|EN/ENB Pin||The watchdog function is forced off.|
|Release Delay Time||3.13ms/50ms/100ms/200ms/400ms(TYP.) can be selectable|
|Watchdog Timeout Period||50ms/100ms/200ms/400ms/800ms/1.6s(TYP.) can be selectable|
|Package||SOT-25||Number of Pins||5|
|Pcs/Reel||3,000||Package Size(mm)||2.8 x 2.9 x 1.3|
|Package||USP-6C||Number of Pins||6|
|Pcs/Reel||3,000||Package Size(mm)||1.8 x 2.0 x 0.6|
What does the watchdog timer work?
This timer function is continuously monitoring to check whether the microcomputer is normally operating or not and give notice of any abnormal operation.