Description

DESCRIPTION:

UM3561 is a low-cost, low-power CMOS LSI designed for use in alarm and toy applications. Since the integrated circuit includes oscillator and selector circuits, a compact sound module can be constructed with only a few additional components. The M3561 contains a programmed mask ROM to simulate siren sound.

FEATURES:

· Four sounds can be selected

· Power on reset

· Typical 3V operating voltage

· A magnetic speaker can be driven by an NPN transistor