BT8028 Datasheet, PDF (1/6 Pages) Integral Corp. – SIMPLE MELODY GENERATOR

TECHNICAL DATA
SIMPLE MELODY GENERATOR
BT8028-XX
FEATURES
FUNCTIONS
• 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 (presto-
largo)
• Direct piezo drive
• 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
BT8028C-
X X L(S)
VSS VCC OUT
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").
ABSOLUTE MAXIMUM RATINGS (Ta = 25^oC)
Characteristic
DC Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Symbol
V_CC – V_SS
V_IN
T_opr
T_stg
Value
Unit
-0.3 ~ 3.5
V
V_SS – 0.3 ~ V_CC – 0.3
V
-20 ~ +65
o_C
-55 ~ +125
o_C
ELECTRICAL CHARACTERISTICS (T_a = 25^oC, V_CC = 1.5V ; unless otherwise specified)
Characteristic
Symbol
Test Condition
Min
Typ
Operating Voltage
Supply Current
Stand-by
Operating
Output Drive Current
Output Sink Current
Frequency Stability
V_CC
I_S
I_CC
I_OH
I_OL
ΔF/F
Output open
V_CC =1.3V, V_O =0.8V
V_CC =1.3V, V_O =0.5V
F_OSC(1.6V) - F_OSC(1.3V)
F_OSC(1.3V)
1.3
1.5
0.1
0.6
1.5
0.6
1.5
Max
Unit
3.3
V
1
μA
60
mA
mA
12
%
1