DESCRIPTION
The BT8028 is a CMOS LSI chip which electronically plays a prearranged melody. Selection of melody start signal is possible by mask option: orders specification suffix "L" indicate Level Hold Mode, and suffix "S" indicate One Shot Mode. The Universal version (as One Shot or Level Hold Mode) is possible also (suffix "U").

FEATURES
• 127-note ROM memory
• 1.3V to 3.3V power supply and
   low power consumption
• RC oscillator on chip
• One shot or level hold mode
• Sound range: 4 octaves, 2
   series
• Tempo: 16 kinds (prestolargo)
• Direct piezo drive

FUNCTIONS
• Solution of automatic stop or repeat of the
   melody
• Dynamic speaker can be driven with external
   NPN transistor
• Two or three times repeat of melody (mask
   option)
• Each note can be individually programmed to
   be staccato or legato (mask option)
• Changing the contents of melody is possible
   by reprogramming the maskable ROM
• Power on reset; melody begins from the first
   note
• Start from the head of melody
• Bare chip or TO-92 are available