UM88T-19L BOWIN | Alldatasheet

Document overview

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Technical content

Features

  • • •• 127-note ROM memory •• •• 1.3V to 3.3V operating voltage
  • • •• Sound range : 2.5 octives, 2 series •• •• Bulit-in RC oscillator
  • • •• Termpo : 16 kinds (presto-largo) • Power-on reset, melody begins from 1 st note
  • • •• Double sound sources •• •• With external npn transistor to drive speaker
  • • •• Digital envelop effect •• •• Packaged in inexpensive TO-92 package General Description The UM88T series is a CMOS LSI designed melody gene rator IC with accompaniment for use in telephones and toys application. It has an on-chip ROM programmed for dual-tone musical performance. Produced by CMOS technology, the device results in very low power consumption. And with built-in RC oscillator, a compact melody module can be constructed with only a few additional components.

Electrical Characteristics

(Vss=0V, Vdd=1.5V, Ta=25 °C, unless otherwise specified.) Parameter Symbol Min. Typ. Max. Conditions Operating voltage V DD 1.3V 1.5V 3.3V Current Consumption I DD - - 1mA Playing with no load Output Current I O/P 0.6mA 1.5mA - Song Series List Part number Song name UM88T-19L For Alice

Pin Configuration (Front View) Pin no. Symbol Description

1 O/P Melody Output

2 V DD Positive Power Supply

3 V SS Negative Power Supply

Typical Application Circuits LEVEL HOLD MODE FOR SPEAKER LEVEL HOLD MODE FOR PIEZO BUZZER Recommended values : C = 1 µ F , R = 4.7K Ω , Q = 2SC9013 REV.9-01 (2 pages)