Document
UM3482
Bowin Microelectronics _________________________________________________________ UM3481A Multi-Instrument Melody Generator
Features • Powered by a 1.5V battery • Low standby current • 512-note memory, up to 16 songs • 8 playing modes by user setting • One built-in RC oscillator
• 8 beats selectable • 3 timbres - piano, organ, and mandolin • 5 tempos available through mask setting • 14 tones selectable • On-chip envelope modulator and pre-amplifier
General Description The UM3481 series is a mask-ROM-programmed multi-instrument melody generator , implemented by CMOS technology. It is designed to play the melody according to the previously programmed information and is capable of generating 16 songs with 3 instrument effects : piano, organ and mandolin. The device also includes a pre-amplifier which provides a simple interface to the driver circuit. The M3481 series is intended for applications such as toys, door bells, music box, melody clock/timers and telephones. Absolute Maximum Ratings DC Supply Voltage .......................................... -0.3V to +5.0V Input Voltage Range ....................................... Vss-0.3V to Vdd+0.3V Operating Ambient Temperature .................... 0°C to +70°C Storage Temperature ....................................... -10°C to +125°C Electrical Characteristics (Vss=0V, Vdd=1.5V, Ta=25°C, unless otherwise specified.) Parameter Symbol Min. Typ. Operating Voltage Vdd 1.3V 1.5V Stand-by Current Isb Input Voltage High Vih Vdd-0.3V Input Voltage Low Vil Vss Input Current High Iih 1.5µA 3µA Input Current Low Iil ENV Pin Drive Current Ienv 500µA Output Current (OP1) Iol 200µA Output Current (OP2) Ioh 200µA
Max. 5V 12µA Vdd Vss+0.3V 6µA 0.1µA 1200µA 1200µA
Conditions No load
Vih=Vdd Vil =Vss Venv=0.8V Vol=0.8V Voh=0.7V
Playing modes Mode CE SL LP AS Program 0 0 X X X Standby 1 1 0 0 0 First melody→...→Last melody→Stop 2 0 0 1 ↑ First melody→...→Last melody→Repeat from first melody 3 0 1 0 ↑ Start from the present melody→Stop 4 1 0 1 1 Repeat the present melody 5 1 0 0 ↑ Change to the next melody→...→Last melody→Stop 6 1 0 1 ↑ Next melody→...→Last melody→Repeat from first melody 7 1 1 0 ↑ Change to the next melody→Stop 8 1 1 1 ↑ Change to the next melody→Repeat the same melody ( ↑ means a low to high voltage level transaction )
BOWIN ELECTRONIC COMPANY
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UM3482
Bowin Microelectronics _________________________________________________________
Song Series List (Fewer songs version provides longer duration for each song) UM3481 (8 songs) UM3482 (12 songs) UM3485 (5 songs)
The Hawaiian Wedding Song Try To Remember Aloha OE Love Story Yesterday
Jingle Bells Santa Claus Is Coming To Town Silent Night, Holy Night Joy To The World Rudolph, The Red-nosed Reindeer We Wish You A Merry Christmas O Come, All Ye Faithful Hark, The Herald Angels Sing
American Patrol Rabbits Oh My Darling, Clementine Butterfly London Bridge Is Falling Down Row, Row, Row Your Boat.