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| 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 Applications * Toys * Sound effect generators General Description 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 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. Pin Assignment 1 25th June '96 HT3015A Block Diagram Pad Coordinates Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 Unit: m X -1528.5 -1528.5 -1577 -1392 -91 94 279 464 805 990 1175 1360 Y 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 x 3920 (m)2 * The substrate should be connected to VSS in the PCB layout artwork. 2 25th June '96 HT3015A Pin Description Pin No. 1~6, 15, 24 7 8 9 10 11 12 13 14 Pin Name KEY1~KEY16 NC VDD AUD OSCO OSCI FLAG VSS TEST I/O I -- I O O I O I I Internal Connection Pull-High -- -- PMOS Output -- -- Description Trigger keys, low active, retriggerable keys No connection Positive power supply Voice output for driving an external transistor Oscillator output pin Oscillator input pin NMOS 3Hz flash, low active output, open drain Open Drain -- Pull-High Negative power supply (GND) For IC test only Absolute Maximum Ratings Supply Voltage ..............................-0.3V to 6.0V Input Voltage................. VSS-0.3V to VDD+0.3V Storage Temperature................. -50C to 125C Operating Temperature................... 0C to 70C (Ta=25C) Electrical Characteristics Symbol VDD IDD ISTB IAUD IOL VIL VIH FOSC Parameter Supply Voltage Operating Current Stand-by Current Max. AUD Output Current FLAG Sink Current "L" Input Voltage "H" Input Voltage System Frequency Test Condition VDD -- 3V 3V 3V 3V -- -- 3V Min. 2.4 -- -- -1.5 1.5 -- 0.7VDD -- Typ. -- 200 1 -2 3.0 -- -- 180 Max. 5.0 400 5 -- -- 0.2VDD -- -- Unit V A A Condition -- No load -- VOH=0.6V VOL=0.3V -- -- ROSC=100K mA mA V V 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: KEY No. KEY2 KEY3 KEY4 KEY5 KEY6 KEY7 KEY8 KEY9 KEY10 KEY11 KEY12 KEY13 KEY14 KEY15 KEY16 Rhythm Latin fusion 1 Latin fusion 2 Latin ballad 1 Latin ballad 2 Latin ROCK 1 Latin ROCK 2 Latin fusion 3 Samba 1 Samba 2 Son afro Mambo Latin ROCK 3 Rhumba Cha Cha Samba 3 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 priority KEY1 > KEY2 > KEY3 > .......... > KEY15 > KEY16 KEY features Pull-high resistance: 100k 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 |
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