Catalyst CAT93C4633JI-45TE13 1K 4.5-4.75V Supervisory circuits with microwire serial CMOS EEPROM, precision reset controller and watchdog timer
Ricoh R3131N47EA-TR Low voltage detector with built-in delay circuit. Detector threshold 4.7V. Standard output delay time 240ms. Output type Nch open drain. Detection mode H series output. Taping type TR.