UM3561 IC 3V Unicorn Microelectronics (UMC) UM3561

Product Overview

The UM3561 is a low-cost, low-power CMOS LSI (Large-Scale Integration) chip designed specifically for toy applications. It includes an integrated oscillator and selector circuit, allowing for the construction of a compact sound module with minimal external components. The chip contains a programmed mask ROM that simulates four different siren sounds.

Core Specifications

• Manufacturer: Unicorn Microelectronics (UMC)

• Function: Three/Four Siren Sound Generator

• Operating Voltage: Typically 3 V

• Oscillator: RC oscillator requiring an external resistor

• Output: Can drive a magnetic speaker using an NPN transistor

• Features: Power-on reset, multi-sound selection capability