M3561 UM3561 Three Siren Sound Generator _____________________________________________________________________________ Features • Four sounds can be selected • Typical 3V operating voltage • 8-pin DIP package form • Power on reset. • A magnetic speaker can be driven by connecting an NPN transistor General Description The M3561 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. Absolute Maximum Ratings DC Supply Voltage .......................................... -0.3V to +5.0V Input Voltage Range ....................................... Vss-0.3V to Vdd+0.3V Operating Ambient Temperature .................... -10°C to +60°C Storage Temperature ....................................... -55°C to +125°C Electrical Characteristics (Vdd=3V, Vss=0V, Ta=25°C, Fosc=106496Hz unless otherwise specified.) Parameter Symbol Min. Typ. Max. Conditions Operating voltage Vdd 2.4V 3V 3.6V Operating Current Idd 150µA “H” Input Voltage Vih Vdd-0.2 Vdd “L” Input Voltage Vil Vss Vss+0.2 Frequency Stability 20% Fosc(3.3V)-Fosc(2.7V) ∆F/F Fosc(2.7V) Output Current Io/p 3mA Frequency Deviation -10% +10% ∆F/F Playing modes SEL1 SEL2 Sound Effect NC NC Police Siren Vdd NC Fire Engine Siren Vss NC Ambulance Siren X Vdd Machine Gun NC : No Connection X : Don’t Care Pin Configuration Pin no. 1 2 3 4 5 6 7 8 Symbol SEL2 Vss OUTPU T NC Vdd SEL1 OSC1 OSC2 Description Sound effect selection pin no. 2 Negative power supply Mono-tone output Internal testing pin : Leave open for normal operation Positive power supply Sound effect selection pin no. 1 External oscillator terminal 1 External oscillator terminal 2 Typical Application Circuits FOUR SOUND APPLICATION : 1. Police Siren 2. Fire Engine Siren 3. Ambulance Siren 4. Machine Gun THREE SOUND APPLICATION : 1. Police Siren 2. Fire Engine Siren 3. Ambulance Siren TWO SOUND APPLICATION : 1. Police Siren 2. Machine Gun Recommended values : R1 = 240kΩ , R2 = 10kΩ, Q = 2SC9013 REV.4-98 (3 pages)