CF1155

CF1155 NPC | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 7

Technical content

NIPPON PRECISION CIRCUITS—1 NIPPON PRECISION CIRCUITS INC. Melody LSIs OVERVIEW The CF1155 series are CMOS melody LSIs 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 func- tion 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 applica- tions including greeting cards and toys.

FEATURES

n Requires few external components n 1.2 to 3.6V wide operating voltage range n Low power consumption n 3 melody modes (bonding option) n Oscillator stop function in non-play mode n Power saving pull-down resistor built-in n RC oscillator circuit n Power-ON initialization function n 2 V SS pad connections n Wide pitch dynamic range (G to D n Chip form PAD LAYOUT and COORDINATES (Unit: µm)

ORDERING INFORMATION

Chip size: 1.23 1.23mm Chip thic kness: 300 ± 30µm T1, T2, TC, and TO bonding is not required. VDD (0,0) (1230,1230) HA1155 7891 0 OUT OUT TC VSS TO OSH LH VSS Number Pad X Y

1 OUT 930 1075

2 OUT 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

NIPPON PRECISION CIRCUITS—2 PAD DESCRIPTION SPECIFICATIONS Absolute Maximum Ratings

Electrical Characteristics

T a = 25 C, V SS = 0V , V DD = 1.5V 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 v oltage, as descr ibed in the Electrical Char acter istics. OUT , OUT Piez oelectric spea ker driver outputs. Both pins are LOW in non-play mode. OUT is LOW and OUT is HIGH dur ing output for a m usical rest note. Both pins are HIGH during the gap betw een m usical notes. VDD Supply. The rear surf ace of the chip is V DD level. VSS Ground T1, T2, TC Test inputs. Pull-down resistor b uilt-in. TO Test output. The oscillator frequency (typ. 50kHz) is output for monitoring pur poses. Parameter Symbol Condition Rating Unit Supply v oltage r ange V DD V SS 0.3 to 5.0 V Input voltage r ange V IN V SS 0.2 to V DD + 0.2 V Oper ating temper ature r ange T opr 20 to 80 C Stor age temper ature r ange T stg 65 to 150 C Parameter Symbol Condition Rating Unit min typ max Oper ating v oltage V DD 1.2 1.5 3.6 V Current consumption 1. Measurement circuit I DD1 Non-play mode – 0.01 0.3 µA Current consumption I DD2 Melody modes: OUT, OUT open – 25 50 µA LH, OSH LOW -level input v oltage V IL –– V SS + 0.2 V LH, OSH HIGH-level input v oltage V IH V DD – 0.2 – – V LH, OSH LOW -level input current I IL V IL = 0.4V 0.7 1.5 3.0 µA LH, OSH HIGH-level input current I IH V IH = 1.5V 0.7 1.5 3.0 µA OUT , OUT LOW -level output current I OL V OL OUT , OUT HIGH-level output current I OH V OH TO oscillator frequency f OSC 35 50 65 kHz TO frequency stability (relative to voltage) D f/f V DD D f/f V DD > 2.0V – 2 – %/1V TO oscillator start v oltage V DOB – – 1.2 V TO oscillator stop v oltage V DOS – – 1.2 V VDD VSS A 1.5V 2. Measurement circuit VDD LH VSS A 1.5V

NIPPON PRECISION CIRCUITS—3 FUNCTIONAL DESCRIPTION Melody Modes The CF1155 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 TUNE

500kW135kW 135kWPull-down resistance (2-pin parallel resistance)

NIPPON PRECISION CIRCUITS—4 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. Pull-down resistance 270kW 1M W 270kW

NIPPON PRECISION CIRCUITS—5 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 3.3µA. 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 1M W when the input is HIGH, and the pull-down resistance is 270k W 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 CF1155 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 x e e . q q + x q . q . . h Rest Code 0123456789AB C DEF q

NIPPON PRECISION CIRCUITS—6 TYPICAL APPLICATION The circuits below represent the standard connections for CF1155 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 OUT VSS VDD OUT OSH LH VSS Piezoelectric buzzer OUT VSS VDD OUT OSH LH VSS Piezoelectric buzzer Circuit 3 OUT VSS VDD OUT OSH LH VSS Piezoelectric buzzer Light OSH LH Melody mode Yes Yes Level hold 1 Yes Level hold 2 Yes One-shot

NIPPON PRECISION CIRCUITS—7 NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility fo r the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infr ingement. Applications for any devices shown in this data sheet are for illustr ation only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing o r modification. The products described in this data sheet are not intended to use for the apparatus which infl uence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinaft er, including compliance with export controls on the distribution or dissemination of the products. Customers shall not e xport, directly or indirectly, any products without first obtaining required licenses and approv als from appropriate gover nment agencies. NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, J apan Telephone: 03-3642-6661 Facsimile: 03-3642-6698 NC9922AE 2000.05 NIPPON PRECISION CIRCUITS INC.