BT8028 - IK Semiconductor

BT8028 SIMPLE MELODY GENERATOR

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"). ABSOLUTE MAXIMUM RATINGS (Ta = 25oC.

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 fir.