15600

DESCRIPTION 

UTC 15600 Series is a CMOS IC circuits which contain a 

programmed mask ROM to generate chord music. The capacity of 

the ROM being used for storage of such music information is of 

128 words and up to two numbers of music melodies under two 

different sound sources can be optioned for storage into it. Also, 

the total integration (for mask option) of the RC oscillation circuit is 

builted in. Moreover, a small-sized package can be suitable for 

space –saving applications. 

FEATURES 

* Range of operating voltage: 0.9~5.5V 

* Reference signal source frequency: 32.768KHZ,47.520KHZ(mask 

option selection)

* Options : 

1. changing the melody midway during performance: Possible or 

not possible (mask option selection) 

2. selection of the reference sound frequency: when selecting the 

signal source frequency of 32.768kHz, A4=440Hz(standard) or 

C4=256Hz when selecting the signal source frequency of 

47.520kHz: A4=440Hz 

3. Selection of performance sound range: when selecting the 

signal source frequency of 

 32.768kHz, A4=440Hz: G6~C4 or G5~C3 

 32.768kHz, A4=256Hz: C7~C4 or C6~C3 

 47.520kHz, A4=440Hz: C7~C4 or C6~F3 

4. Choices of the reference signal source: External clock input or 

integrated RC oscillator (using both of the integrated C and R) 

or integrated RC oscillation (using the integrated C only but the 

R is for external installation) 

5. performance method choice : 

Level hold 

one shot C 

one shot A 

* Attenuation of sound: integrated envelope 

adding circuit 

* Loudspeaker drive: not equipping an 

amplifier(an extremely installed amplifier 

should be used) 

* Output Impedance : 

Max: 222k 

Min :68k

规格书15600