ML63512 4-Bit Microcontroller(4????????
ML6351263514 From datasheet system
ML63512A 4-Bit Microcontroller with Built-in Level Detector, Melody Circuit, Comparator,Operating (Min.)
ML63512A-TB 4-bit microcontroller with built-in level detector, melody circuit,and comparator, operating at 0.9V
ML63512A-TP 4-bit microcontroller with built-in level detector, melody circuit,and comparator, operating at 0.9V
ML63512A63514A From datasheet system