器件名称: IZ8018
功能描述: MULTI MELODY GENERATOR
文件大小: 136.65KB 共5页
简 介:MULTI MELODY GENERATOR
IZ8018
FEATURES
Single-chip CMOS construction 512x10 bit ROM melodies Internal envelope circuit Low stand-by current Single 1.5V operation Piezo direct drive Easy to connect with standard watch and clock LSI’s
FUNCTIONS
Tempo: 16 kinds Sound Range: 3 octaves (G4-G7) Serial select mode - total 7 melodies Play one melody, auto stop 32768 KHz extarnal clock
DESCRIPTION
The IZ8018 is a CMOS multi melody IC. The circuit is composed of a 512-word ROM, address counter, tempo and tone generator, address control circuit, envelope signal generator, switch control circuit and tone generator. The IZ8018 has complementary outputs MO, MO for direct piezo drive. Since the IZ8018 includes an envelope circuit on the output MO, it can generate good melody sound without any external component for envelope circuit. The IZ8018 can easily be connected to Integral’s standard watch chips and designed especially for this target.
BLOCK DIAGRAM
Figure 1.
ABSOLUTE MAXIMUM RATINGS (Ta = 25oC)
Characteristic Supply Voltage Input Voltage Output Voltage Operating Temperature Storage Temperature Symbol VDD - VSS VIN VOUT Ta Tstg Value -0.3 ~ 4.0 VSS - 0.3 ~ VDD + 0.3 VSS - 0.3 ~ VDD + 0.3 - 20 ~ + 75 - 55 ~ + 125 Unit V V V
o o
C C
1
MULTI MELODY GENERATOR
IZ8018
ELECTRICAL CHARACTERISTICS
(Ta = 25oC, VDD = 1.55V, VSS = 0V, unless otherwise specified) Characteristic Operating Voltage Supply Current (Stand-by) Input High Voltage Input Low Voltage Input Current S……
