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 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 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 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 ORDERING INFORMATION Device Package CF1156 Chip form SEIKO NPC CORPORATION —1 CF1156 series PAD LAYOUT and COORDINATES (Unit: µm) Number VDD LO 3 2 4 T2 5 T1 6 HA1156 TC (0,0) (1230,1230) BO 1 11 7 8 9 VSS TO OSH VSS 10 LH Chip size: 1.23 × 1.23mm Chip thickness: 300 ± 30µm T1, T2, TC, and TO bonding is not required. Pad Pad dimensions (Unit: µm) X Y 1 BO 930 1075 2 LO 529 1075 3 VDD 155 1075 4 TC 155 887 5 T2 155 608 6 T1 155 420 7 VSS 223 155 8 TO 486 155 9 OSH 750 155 10 LH 1041 155 11 VSS 1075 420 PAD DESCRIPTION Name Function OSH, LH 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. LO LED drive output, HIGH level during non-play mode. BO Piezoelectric speaker driver output. LOW level output during non-play mode and during musical rest notes. HIGH level output during gaps between melody notes. VDD Supply. The rear surface of the chip is VDD level. VSS Ground T1, T2, TC TO Test inputs. Pull-down resistor built-in. Test output. The oscillator frequency (typ. 50kHz) is output for monitoring purposes. SEIKO NPC CORPORATION —2 CF1156 series SPECIFICATIONS Absolute Maximum Ratings Parameter Symbol Rating Unit VDD − VSS −0.3 to 5.0 V Input voltage range VIN VSS − 0.2 to VDD + 0.2 V Operating temperature range Topr −20 to 80 °C Storage temperature range Tstg −65 to 150 °C Supply voltage range Condition Electrical Characteristics Ta = 25°C, VSS = 0V, VDD = 3.0V Rating Parameter Symbol Condition Unit min typ max 2.0 3.0 3.6 V Operating voltage VDD Current consumption1 IDD1 Non-play mode – 0.01 0.6 µA Current consumption2 IDD2 Melody modes: BO, LO open – 100 200 µA LH, OSH LOW-level input voltage VIL – – VSS + 0.2 V LH, OSH HIGH-level input voltage VIH VDD – 0.2 – – V LH, OSH LOW-level input current IIL VIL = 0.8V 0.7 9.0 18 µA LH, OSH HIGH-level input current IIH VIH = 3.0V 0.7 9.0 18 µA BO LOW-level output current IOL1 VOL = 1.0V 4.0 – – mA BO HIGH-level output current IOH1 VOH = 2.0V 4.0 – – mA LO LOW-level output current IOL2 VOL = 1.0V 10 – – mA LO HIGH-level output current IOH2 VOH = 2.0V 8 – – mA TO oscillator frequency fOSC 35 50 65 kHz TO oscillator start voltage VDOB – – 2.0 V TO oscillator stop voltage VDOS – – 2.0 V 1. Measurement circuit A VDD 3.0V VSS 2. Measurement circuit A 3.0V VDD LH VSS SEIKO NPC CORPORATION —3 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 LED flash interval = 1 cycle Note: The LED flashes at intervals equal to a 1/8 musical note, regardless of the melody note length being output. Play BO Non-play VDD 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 LH Melody mode HIGH HIGH Level hold 1 LOW HIGH Level hold 2 HIGH LOW One-shot LOW LOW Non-play 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 SEIKO NPC CORPORATION —4 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 open circuit or LOW, whichever occurs first. LH BO 1 TUNE Oscillator Pull-down resistance 90kΩ 300kΩ 90kΩ 300kΩ 90kΩ One-shot When OSH goes HIGH, a single melody play starts. Melody play continues until the melody ends, even if OSH goes open circuit or LOW mid melody. However, if the OSH input goes HIGH again during melody play, the melody play restarts from the beginning. OSH From the begining BO 1 TUNE 1 TUNE Oscillator Pull-down resistance 90kΩ 90kΩ 90kΩ 300kΩ 300kΩ 90kΩ 90kΩ 300kΩ 300kΩ SEIKO NPC CORPORATION —5 CF1156 series Power-save Function As shown in the preceding timing diagrams, the oscillator stops during non-play mode and the pull-down resistance value changes in response to both HIGH-level and LOW-level inputs (power-save pull-down resistor) to reduce power consumption and extend battery life. Non-play oscillator stop function When melody play ends, regardless of the state of either LH or OSH, the internal oscillator stops and is placed in a standby state. In this state, the current consumption, including input pin pull-down resistor current (IIH max), does not exceed 18.6µA. Power-save pull-down resistor The resistance of the OSH and LH input pull-down resistor changes in response to the input voltage. The pulldown resistance is 300kΩ when the input is HIGH, and the pull-down resistance is 90kΩ when the input is LOW. Furthermore, if a light-dependent resistor (CdS) cell is employed as a switch (the pull-down resistance is maximum when the CdS resistance is minimum (light) and the pull-down resistance is minimum when the CdS resistance is maximum (dark)), the combined resistance can be increased, decreasing current consumption. Musical Specifications Maximum program steps A maximum of 64 steps can be programmed into internal mask-programmable ROM. Each step represents either a note (sound pitch and length), a rest note, or a jump. The maximum number of jumps is 7. Note length (including rests) Eight rhythm values, from sixteenth note to half note, for notes and rests can be programmed, as shown in the following table. Code Type 0 1 2 3 4 5 6 7 Note Rest Also, notes and rests longer than half notes and rests can be created using a tie to connect the notes. This requires 2 program steps in ROM. Tempo The tempo for the standard quarter note can be selected from the following 16 options. Code 0 1 2 3 4 5 6 7 8 9 A B C D E F = 697 348 232 174 139 116 99.4 87 77.3 69.6 63.3 58 53.5 49.7 46.4 43.5 Pitch and scale The CF1156 series devices support 3.5 octaves ranging from G3 to D7, from which 15 notes can be selected to form a scale. SEIKO NPC CORPORATION —6 CF1156 series TYPICAL APPLICATION The circuits below represent the standard connections for CF1156 series devices. VDD LO BO VDD LO BO Light VSS OSH LH VSS VSS OSH LH VSS CdS Circuit 1 VDD LO VSS OSH Circuit 3 BO LH VSS Circuit 2 Note 1: There are 2 VSS pads, and either pad can be used. Note 2: Circuit 1 is for one-shot mode, circuit 2 for level hold 1/2 modes, and circuit 3 for CdS connection. The bonding options for the above circuits is shown in the following table. OSH LH Yes Yes Level hold 1 Yes Level hold 2 Yes Melody mode One-shot SEIKO NPC CORPORATION —7 CF1156 series Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from SEIKO NPC CORPORATION (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SEIKO NPC CORPORATION 15-6, Nihombashi-kabutocho, Chuo-ku, Tokyo 103-0026, Japan Telephone: +81-3-6667-6601 Facsimile: +81-3-6667-6611 http://www.npc.co.jp/ Email: [email protected] NC0002CE 2006.04 SEIKO NPC CORPORATION —8