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CF1156 series Melody LSIs
OVERVIEW
The CF1156 series are CMOS melody LSIs with built-in LED driver that, together with a battery and piezoelectric buzzer, operate in one of 3 melody modes determined by input level or bonding options. They also feature an oscillator stop function in non-play mode and a variable pull-down resistance function that responds to input levels in order to reduce power consumption, reduce cost, and extend battery life, making them ideal in a wide range of applications including greeting cards and toys.
FEATURES
I I I I I I
LED direct drive Requires few external components 2.0 to 3.6V wide operating voltage range Low power consumption 3 melody modes (bonding option) Oscillator stop function in non-play mode
I I I I I I
Power saving pull-down resistor built-in RC oscillator circuit Power-ON initialization function 2 VSS pad connections Wide pitch dynamic range (G3 to D7) Chip form
PAD LAYOUT and COORDINATES
(Unit: µm)
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Number 1 Pad BO LO VDD TC T2 T1 VSS TO OSH LH VSS X 930 529 155 155 155 155 223 486 750 1041 1075 Y 1075 1075 1075 887 608 420 155 155 155 155 420
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VDD
3
LO
2
BO
1
(1230,1230)
2 3 4 5
TC T2 T1
HA1156
4
5
6
6 7 8 9 11 10
VSS
7 8 9 10 11
(0,0)
VSS TO OSH
LH
Chip size: 1.23 × 1.23mm Chip thickness: 300 ± 30µm T1, T2, TC, and TO bonding is not required.
ORDERING INFORMATION
Device CF1156 Package Chip form
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CF1156 series
PAD DESCRIPTION
Name OSH, LH LO BO VDD VSS T1, T2, TC TO Function Melody mode control inputs. Built-in pull-down resistors mean LOW-level signals are obtained when inputs are open circuit. The resistance of the pull-down resistor varies with the applied voltage, as described in the Electrical Characteristics. LED drive output, HIGH level during non-play mode. Piezoelectric speaker driver output. LOW level output during non-play mode and during musical rest notes. HIGH level output during gaps between melody notes. Supply. The rear surface of the chip is VDD level. Ground Test inputs. Pull-down resistor built-in. Test output. The oscillator frequency (typ. 50kHz) is output for monitoring purposes.
SPECIFICATIONS
Absolute Maximum Ratings
Parameter Supply voltage range Input voltage range Operating temperature range Storage temperature range Symbol VDD − VSS VIN Topr Tstg Condition Rating −0.3 to 5.0 VSS − 0.2 to VDD + 0.2 −20 to 80 −65 to 150 Unit V V °C °C
Electrical Characteristics
Ta = 25°C, VSS = 0V, VDD = 3.0V
Parameter Operating voltage Current consumption1 Current consumption2 LH, OSH LOW-level input voltage LH, OSH HIGH-level input voltage LH, OSH LOW-level input current LH, OSH HIGH-level input current BO LOW-level output current BO HIGH-level output current LO LOW-level output current LO HIGH-level output current TO oscillator frequency TO oscillator start voltage TO oscillator stop voltage 1. Measurement circuit Symbol VDD IDD1 IDD2 VIL VIH IIL IIH IOL1 IOH1 IOL2 IOH2 fOSC VDOB VDOS VIL = 0.8V VIH = 3.0V VOL = 1.0V VOH = 2.0V VOL = 1.0V VOH = 2.0V Non-play mode Melody modes: BO, LO open
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Condition Rating min 2.0 – – – VDD – 0.2 0.7 0.7 4.0 4.0 10 8 35 – – 2. Measurement circuit typ 3.0 0.01 100 – – 9.0 9.0 – – – – 50 – – max 3.6 0.6 200 VSS + 0.2 – 18 18 – – – – 65 2.0 2.0 Unit V µA µA V V µA µA mA mA mA mA kHz V V
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A
VDD
A
VDD
3.0V
VSS
3.0V
LH
VSS
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CF1156 series
FUNCTIONAL DESCRIPTION
LED Indicator
The LED flashes during melody play mode only, at intervals representing a 1/8 musical note length.
LED flash
= 1 cycle
Note: The LED flashes at intervals equal to a 1/8 musical note, regardless of the melody note length being output. Play Non-play VDD
LED flash interval BO
LO
Active:LOW VSS
Melody Modes
The CF1156 series melody mode is determined by the bonding options and levels on the mode control inputs OSH and LH. When either OSH or LH or both go HIGH (VDD), the corresponding melody mode is selected as shown in the following table.
OSH HIGH LOW HIGH LOW LH HIGH HIGH LOW LOW Melody mode Level hold 1 Level hold 2 One-shot Non-play
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Level hold 1 When both OSH and LH go HIGH, melody play starts and continues while both are held HIGH. When both inputs go open circuit or LOW, melody play stops, even if during mid melody. Note that both OSH and LH inputs should be switched simultaneously using a single switch. If there is timing difference between the two inputs, then LH has priority.
OSH
LH
BO
1 TUNE REPEAT REPEAT
Oscillator
Pull-down resistance (2-pin parallel resistance)
45kΩ
150kΩ
45kΩ
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CF1156 series Level hold 2 When LH goes HIGH, a single melody play starts. Melody play continues until the single melody ends or LH goes .