CF1156

CF1156_06 NPC | Alldatasheet

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SEIKO NPC CORPORATION —1 Melody LSIs OVERVIEW The CF1156 series are CMOS melody LSIs with built-in LED driver that, together with a battery and piezo- electric buzzer, operate in one of 3 melody modes determined by input level or bonding options. They also fea- ture 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 LED direct drive I Requires few external components I 2.0 to 3.6V wide operating voltage range I Low power consumption I 3 melody modes (bonding option) I Oscillator stop function in non-play mode I Power saving pull-down resistor built-in I RC oscillator circuit I Power-ON initialization function I 2 V SS pad connections I Wide pitch dynamic range (G to D I Chip form

ORDERING INFORMATION

SEIKO NPC CORPORATION —2 PAD LAYOUT and COORDINATES (Unit: µ PAD DESCRIPTION Chip size: 1.23 1.23mm Chip thickness: 300 ± 30µm T1, T2, TC, and TO bonding is not required. VDD (0,0) (1230,1230) HA1156 7891 0 LO BO TC VSS TO OSH LH VSS Number Pad Pad dimensions (Unit: µ XY

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

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 V DD level. VSS Ground T1, T2, TC Test inputs. Pull-down resistor built-in. TO Test output. The oscillator frequency (typ. 50kHz) is output for monitoring purposes.

SEIKO NPC CORPORATION —3 SPECIFICATIONS Absolute Maximum Ratings

Electrical Characteristics

Ta = 25 C, V SS = 0V , V DD = 3.0V Parameter Symbol Condition Rating Unit Supply voltage range V DD V SS 0.3 to 5.0 V Input voltage range V IN V SS 0.2 to V DD + 0.2 V Operating temperature range T opr 20 to 80 C Storage temperature range T stg 65 to 150 C Parameter Symbol Condition Rating Unit min typ max Operating voltage V DD 2.0 3.0 3.6 V Current consumption 1. Measurement circuit I DD1 Non-play mode – 0.01 0.6 µA Current consumption 2. Measurement circuit I DD2 Melody modes: BO, LO open – 100 200 µA LH, OSH LOW-level input voltage V IL –– V SS + 0.2 V LH, OSH HIGH-level input voltage V IH V DD – 0.2 – – V LH, OSH LOW-level input current I IL V IL = 0.8V 0.7 9.0 18 µA LH, OSH HIGH-level input current I IH V IH = 3.0V 0.7 9.0 18 µA BO LOW-level output current I OL1 V OL = 1.0V 4.0 – – mA BO HIGH-level output current I OH1 V OH = 2.0V 4.0 – – mA LO LOW-level output current I OL2 V OL = 1.0V 10 – – mA LO HIGH-level output current I OH2 V OH = 2.0V 8 – – mA TO oscillator frequency f OSC 35 50 65 kHz TO oscillator start voltage V DOB – – 2.0 V TO oscillator stop voltage V DOS – – 2.0 V VDD VSS A 3.0V VDD LH VSS A 3.0V

SEIKO NPC CORPORATION —4 FUNCTIONAL DESCRIPTION LED Indicator The LED flashes during melody play mode only, at intervals representing a 1/8 musical note length. 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 (V DD ), the corresponding melody mode is selected as shown in the following table. 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 Melody mode HIGH HIGH Level hold 1 LOW HIGH Level hold 2 HIGH LOW One-shot LOW LOW Non-play = 1 cycle BO LED flash /sxnoteup /sxnoteup/sxnoteup/sxnoteup/sxnoteup /eighthnoteup LED flash interval LO Play Non-play VDD Active:LOW VSS The LED flashes at intervals equal to a 1/8 musical note, regardless of the melody note length being output. Note:

1 TUNE

150kΩ45kΩ 45kΩPull-down resistance (2-pin parallel resistance)

SEIKO NPC CORPORATION —5 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. 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. 300kΩ90kΩPull-down resistance 90kΩ 300kΩ 90kΩ 300kΩ 90kΩ Pull-down resistance 90kΩ 300kΩ 90kΩ 90kΩ 90kΩ From the begining 300kΩ 300kΩ

SEIKO NPC CORPORATION —6 Power-save Function As shown in the preceding timing diagrams, the oscillator stops during non-play mode and the pull-down resis- tance 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 (I IH 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 pull- down resistance is 300k Ω when the input is HIGH, and the pull-down resistance is 90k Ω when the input is LOW. Furthermore, if a light-dependent resistor (CdS) cell is employed as a switch (the pull-down resistance is max- imum 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. 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. Pitch and scale The CF1156 series devices support 3.5 octaves ranging from G to D , from which 15 notes can be selected to form a scale. Type Code 01234567 Note /sxnoteup /eighthnoteup /eighthnoteup ⟑ /quarternoteup /quarternoteup /cross /sxnoteup /quarternoteup ⟑ /quarternoteup ⟑ ⟑ /halfnoteup Rest /sixteenthrest /eighthrest /eighthrest ⟑ ⟑ /arpeggio /arpeggio /cross /sixteenthrest /arpeggio ⟑ /arpeggio ⟑ ⟑ Code 0123456789AB C D EF /quarternoteup

SEIKO NPC CORPORATION —7 TYPICAL APPLICATION The circuits below represent the standard connections for CF1156 series devices. Note 1: There are 2 V SS 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. Circuit 1 Circuit 2 LO VSS VDD BO OSH LH VSS LO VSS VDD BO OSH LH VSS Circuit 3 LO VSS VDD BO OSH LH VSS Light CdS OSH LH Melody mode Y es Y es Level hold 1 Y es Level hold 2 Y es One-shot

SEIKO NPC CORPORATION —8 NC0002CE 2006.04 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 te sting or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any ent ity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are req uested 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: sales npc.co.jp