Microcontroller Supervisory IC Application Note

A general voltage detector has only a preset detector threshold voltage. The release voltage is determined by the detector threshold hysteresis fixed in the IC. However, it is now possible to use a product with a preset detector threshold voltage and a released voltage.
Ricoh provides the R3150N Series that has a detector threshold voltage and a released voltage with high accuracy (±1.5%), and can be set up at about ±35% for both detect/release output delay time by an external capacitor.
In addition, R3150N Series is a high performance voltage detector which is also providing a version with a SENSE pin, and a N-channel open drain "H" Type and a version which can detect directly up to 10V in 36V operation.