HT3015A 15 Latin Rhythm Generator Features • • • Operating Voltage: 2.4V~5.0V Directly drive an external transistor Low stand-by current • • • 15 rhythms triggered by 16 keys 3Hz LED flash output 24 pin dual-in-line package • Sound effect generators Applications • Toys General Description LED flashes at a rate of 3Hz. Various types of timbre and rhythm can be generated by coding the internal ROM. The IC is offered in either a dice form or 24 pin dual-in-line package. The HT3015A is a single-chip PCM rhythm generator implemented in the CMOS technology. The IC includes 16 keys and can generate 15 kinds of rhythm. While the IC is playing, an Pin Assignment 1 25th June ’96 HT3015A Block Diagram Unit: µm Pad Coordinates Pad No. X Y 1 2 3 4 5 6 7 8 9 10 11 12 –1528.5 –1528.5 –1577 –1392 –91 94 279 464 805 990 1175 1360 1728.5 1411.5 –1762.5 –1762.5 –1762.5 –1762.5 –1762.5 –1762.5 –1771.5 –1771.5 –1771.5 –1771.5 Pad No. 13 14 15 16 17 18 19 20 21 22 23 X Y 1545 –1771.5 1547 1414 1547 1718.5 1355.5 1768.5 1170.5 1768.5 985.5 1768.5 798 1768.5 –776 1773.5 –961 1773.5 –1146.5 1773.5 –1331.5 1773.5 Chip size: 3450 × 3920 (µm)2 * The substrate should be connected to VSS in the PCB layout artwork. 2 25th June ’96 HT3015A Pin Description Pin No. Pin Name I/O Internal Connection 1~6, 15, 24 KEY1~KEY16 I Pull-High 7 NC — — No connection 8 VDD I — Positive power supply 9 AUD O PMOS Output 10 OSCO O — Oscillator output pin 11 OSCI I — Oscillator input pin 12 FLAG O 13 VSS I — 14 TEST I Pull-High Description Trigger keys, low active, retriggerable keys Voice output for driving an external transistor NMOS 3Hz flash, low active output, open drain Open Drain Negative power supply (GND) For IC test only Absolute Maximum Ratings Supply Voltage ..............................–0.3V to 6.0V Storage Temperature................. –50°C to 125°C Input Voltage................. VSS–0.3V to VDD+0.3V Operating Temperature................... 0°C to 70°C (Ta=25°C) Electrical Characteristics Symbol Parameter Test Condition VDD Condition Min. Typ. Max. Unit VDD Supply Voltage — — 2.4 — 5.0 V IDD Operating Current 3V No load — 200 400 µA ISTB Stand-by Current 3V — — 1 5 µA IAUD Max. AUD Output Current 3V VOH=0.6V –1.5 –2 — mA IOL FLAG Sink Current 3V VOL=0.3V 1.5 3.0 — mA VIL “L” Input Voltage — — — — 0.2VDD V VIH “H” Input Voltage — — 0.7VDD — — V FOSC System Frequency 3V ROSC=100K — 180 — KHz 3 25th June ’96 HT3015A Functional Description KEY2~KEY16 KEY1 KEY2~KEY16 can individually play a section of the 15 built-in demo-rhythms 4 times continuously. Their corresponding rhythms are as follows: KEY1 is a sequential input key. Pressing this key once plays the first rhythm, and re-pressing it plays the second rhythm, and so forth. Any key of KEY2~KEY16 can be pressed to reset KEY1 (return to the first section of the first group). KEY No. Rhythm KEY2 Latin fusion 1 KEY3 Latin fusion 2 KEY4 Latin ballad 1 KEY5 Latin ballad 2 KEY6 Latin ROCK 1 KEY7 Latin ROCK 2 KEY8 Latin fusion 3 KEY9 Samba 1 KEY10 Samba 2 KEY11 Son afro KEY12 Mambo KEY13 Latin ROCK 3 KEY14 Rhumba KEY15 Cha Cha KEY16 Samba 3 KEY priority KEY1 > KEY2 > KEY3 > .......... > KEY15 > KEY16 KEY features Pull-high resistance: 100kΩ Key-in debounce time: 22 ms FLAG 3Hz flashing LED output during the playing of the IC, active low, NMOS open drain output Timing Diagram 4 25th June ’96 HT3015A Application Circuits Chip form 5 25th June ’96 HT3015A Package form 6 25th June ’96