Voltage Detector with Watchdog Function and ON/OFF Control
The XC6121 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.
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.