HT2860 6-Sound Generator Features • • • • • Single power supply: 2.4V~4.5V Low standby current: 1µA (Typ.) at VDD=3V Auto power-off function Six different sound sections • • • K1 to K6 independently chosen or as a cascade control Speaker or direct piezo application 0.5Hz~1Hz LED flash output Minimal external components General Description multaneously triggering more than one key according to the key priority where K1 is the highest and K6 is the lowest. The customer’s sound sample is analyzed and programmed into an internal ROM by changing a mask layer during device fabrication. The HT2860 is suitable for various toy applications. The HT2860 is a CMOS LSI chip designed for use in sound effect products. It can generate six sections of programmable sounds. The LSI is equipped with tone circuit and control logic to generate various sounds including door bell, alarm, melodies, etc. Users can play not only sound sections (S1~S6) by triggering a single key (K1~K6), but serial sound sections by si- Pin Assignment OSC2 1 18 OUT VDD 1 16 OSC3 OSC1 2 17 OUT KEY6 2 15 TEST3 TEST3 3 16 TEST1 KEY5 3 14 OSC1 LED 4 15 TEST2 KEY4 4 13 OSC2 OSC3 5 14 PWR KEY3 5 12 OUT VDD 6 13 VSS KEY2 6 11 OUT KEY6 7 12 KEY1 KEY1 7 10 TEST2 KEY5 8 11 KEY2 VSS 8 9 PWR KEY4 9 10 KEY3 HT2860 – 16 DIP HT2860 – 18 DIP 1 11th July ’97 HT2860 Pad Coordinates Unit: mil Pad No. X Y Pad No. X Y 1 –38.21 39.10 10 38.38 6.38 2 –38.21 30.60 11 38.38 18.10 3 –38.21 –22.44 12 38.38 29.84 4 –38.21 –39.10 13 38.38 39.10 5 –25.71 –39.10 14 30.14 39.10 6 –13.56 –39.10 15 –2.68 39.10 7 10.75 –39.10 16 –10.75 39.10 8 22.91 –39.10 17 –18.83 39.10 9 38.38 –39.10 18 –26.90 39.10 Chip size: 89 × 90 (mil)2 ∗ The IC substrate should be connected to VDD in the PCB layout artwork. Block Diagram 2 11th July ’97 HT2860 Pad Description Pad No. Pad Name I/O Internal Connection Inverter Out Description 1 LED O LED flash output 2 OSC3 O — Vibration oscillator output 3 VDD — — Positive power supply 4 KEY6 I Pull-Low KEY6 input, high active 5 KEY5 I Pull-Low KEY5 input, high active 6 KEY4 I Pull-Low KEY4 input, high active 7 KEY3 I Pull-Low KEY3 input, high active 8 KEY2 I Pull-Low KEY2 input, high active 9 KEY1 I Pull-Low KEY1 input, high active 10 VSS — — Negative power supply, GND 11 PWR I — Power on reset 12 TEST2 I/O — For IC test only 13 TEST1 I/O — For IC test only 14 OUT O Inverter Out Sound output, normally low at the standby state 15 OUT O Inverter Out Sound output, out of phase to pad 14 16 OSC2 O — Oscillator output 17 OSC1 I — Oscillator input 18 TEST3 I/O — For IC test only Absolute Maximum Ratings* Supply Voltage ................................. –0.3V to 5V Storage Temperature................. –50°C to 125°C Input Voltage.................... VSS–0.3 to VDD+0.3V Operating Temperature................... 0°C to 70°C *Note: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damageto the device. These are stress ratings only. Functional operation of this device at these or any other conditions above those indicated in the operational sections of this specification is not implied and exposure to absolute maximum rating conditions for extended periods may affect device reliability. 3 11th July ’97 HT2860 (Ta=25°C) Electrical Characteristics Symbol Parameter Test Conditions VDD Conditions Min. Typ. Max. Unit VDD Operating Voltage — — 2.4 3 4.5 V ISTB Standby Current 3V — — 1 5 µA IDD Operating Current 3V No load — 100 200 µA IOH OUT Source Current 3V VOH=2.5V –1 –2 — mA IOL OUT Sink Current 3V VOL=0.5V 1 2 — mA ILED LED Source Current 3V VOH=2.5V –0.7 –1.5 — mA fSYS Oscillator Frequency 3V ROSC=120kΩ — 128 — kHz VIH “H” Input Voltage 3V — 2.4 — — V VIL “L” Input Voltage 3V — — — 0.6 V Timing Diagram 4 11th July ’97 HT2860 Application Circuits Speaker application 5 11th July ’97 HT2860 6 11th July ’97 HT2860 7 11th July ’97 HT2860 Application Circuits (HT2860B — Six Alarm Sounds) 8 11th July ’97 HT2860 Application Circuits (HT2860C — Six Alarm Sounds) 9 11th July ’97