DESCRIPTION

The UTC UM66TXXL series are CMOS LSI designed for using in door bell, telephone and toy application. It is an on-chip ROM programmed for musical performance. Produced by CMOS

technology, the device results in very low power consumption. Since the UTC UM66TXXL series include oscillation circuits a compact melody module can be constructed with only a few additional components.

„ FEATURES

* 64-Note Rom memory

* 1.5V ~ 4.5V power supply and low power consumption

* Dynamic speaker can be driven with external NPN transistor

* OSC resistor hold mode

* Power on reset: melody begins from the first note

* Built in level hold mode