DESCRIPTION
The BT8031-XX is a CMOS LSI chip, which plays a prearranged melodies. The ROM has a 127 words and can store up to two melodies with double sound sources, and it uses the built-in digital envelope circuit.

FEATURES
• 127-note ROM memory
• 2.0V to 5.0V power supply and low power
   consumption
• RC oscillator on chip
• One shot or level hold mode (mask option)
• Sound range: 2.5 octaves, 2 series
• Tempo: 16 kinds (presto-largo)
• Double sound sources
• Digital Envelope Effect
• Operation Temperature Range : -10 to 70℃

FUNCTIONS
• Dynamic speaker can be driven with external
   NPN transistor
• Power on reset; melody begins from the first note
• Start from the head of melody
• Bare chip or TO-92 are available