TECHNICAL DATA







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
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




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.




SONG LIST PIN CONFIGURATION



















BT8031-XX
BT8031- X X
MOVCCVSS

1 VSS
VCC
MO
2
OSC TEST
MT
3
4
5
6

01 For Elise
02 Ding - Dong
03 Westminster
04 One Ding - Dong
05 It’s Small World


CHIP TO-92


ELECTRICAL CHARACTERISTICS (V
CC
= 3V, V
SS
= 0V, T
a
= 25
o
C; unless otherwise specified)


Characteristic Symbol Test Condition Min Typ Max Unit
Operating Voltage V
CC
2.0 3.0 5.0 V
Supply Current Stand-by* I
S
- 5 A　
Operating I
CC
Output open 0.6 1 mA
Output Drive Current I
OH
V
CC
=3V, V
O
=0.8V 0.5 0.5 mA
Output Sink Current I
OL
V
CC
=3V, V
O
=0.5V 0.5 0.5 mA
Input Current MT I
I
V
IN
= V
CC
0.5 3.0 A　
Frequency Stability ∆F/F F
OSC
(3V) - F
OSC
(2V) - 15 %
OSC
(3V)

* Only for version “ONE SHOT MODE”




1