UM66T68L Datasheet PDF - Contek Microelectronics

DESCRIPTION
The Contek 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 Contek 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