HT45F2020 Sound Effect Generator IC Features General Description • Supply Voltage: 8 ~ 30V The HT45F2020 is a sound effect generator device with a capacity to store up to 8 sound files. With its fully integrated 8~30V shunt regulator type power supply the device offers a range of integrated functions to enable it to be implemented in a wide range of sound effect applications. Being supplied in a 6-pin SOT23-6 package type the device can be used in applications where space might be limited. Using the Holtek supplied Sound Effect Generator Wizard development tools, sound file production along with programming and play sound evaluation is made into an easy and rapid process. Other functions include a 200ms soft chirp and fade-in features. With its highly integrated range of functions and development platform Holtek has greatly simplified the sound effect generation process and one in which the hardware only requires a minimum of external components. • 200ms Soft Chirp Function • Fade-in Function • Up to 8 stored sound capacity • Package type: SOT23-6 Application • Car Alarms • Security Products • Restaurant/Cafe Pagers • Other products requiring recorded sound effects Block Diagram Sound Storage Time Base & Oscillator Shunt Regulator Driver Control Unit Pin Assignment OUT1 OUT2 CLK/IO2 SOT23-6 6 5 4 2020 1 2 3 VDD VSS DATA/IO1 Rev. 1.00 Top View 1 March 02, 2016 HT45F2020 Pin Description Pin Name Function I/T O/T VDD VDD PWR — Power Supply VSS VSS PWR — Ground DATA ST CMOS Data pin IO1 ST CMOS General purpose I/O CLK ST — IO2 ST CMOS General purpose I/O OUT1 OUT1 — CMOS Output OUT2 OUT2 — CMOS Inverted output DATA/ IO1 CLK/ IO2 Legend: I/T: Input type; PWR: Power; Description Clock pin O/T: Output type; ST: Schmitt Trigger input; CMOS: CMOS output; Absolute Maximum Ratings Supply Voltage..........................VSS-0.3V to VSS+6.0V Storage Temperature........................... -50°C to 125°C Input Voltage............................ VSS-0.3V to VDD+0.3V Operating Temperature......................... -40°C to 85°C Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. D.C. Characteristics Symbol Ta = 25°C Test Conditions Parameter VDD Conditions Min. Typ. Max. Unit VDD Operating Voltage — — 4.5 — 5.5 V IDD Operating Current 5V No load, all peripherals off, fSYS = 8MHz — 2.0 3.0 mA VIL Input Low Voltage for OUT1, OUT2, IO1, IO2 5V — 0 — 1.5 V VIH Input High Voltage for OUT1, OUT2, IO1, IO2 5V — 3.5 — 5 V IOL Sink Current for OUT1, OUT2, IO1, IO2 5V VOL = 0.1VDD 40 80 — mA IOH Source Current for OUT1, OUT2, IO1, IO2 5V VOH = 0.9VDD -7 -14 — mA RPH Pull-high Resistance for OUT1, OUT2, IO1, IO2 5V 10 30 50 kΩ Rev. 1.00 2 — March 02, 2016 HT45F2020 Shunt Regulator Electrical Characteristics Symbol Parameter CBYPASS = 4.7μF, Ta = 25°C Max. Unit Test Conditions Min. Typ. — 8 — 30 V VUNREG Supply Voltage VDD1 Load voltage with no load in room temperature VUNREG = 8V to 16V, ISUPPLY = ISHUNT(Max) with VUNREG = 16V, no load -3% 5 3% V VDD2 Load voltage – Load and Supply Voltage within Specification ISUPPLY = ISHUNT(Max) with VUNREG = 16, no load, select RSER(1) (1) VUNREG = 8V, ILOAD = ILOAD(Max) (2) VUNREG = 16V, ILOAD = 0 -5% 5 5% V ILOAD Load Current(2) VUNREG = 8V ~ 16V RSER = (16 - VDD1) / ISHUNT(Max) 0 — 15 mA ISHUNT(Max) Maximum Current of IShunt VUNREG = 16V 80 — — mA ISTATIC Maximum Static Current VUNREG = 16V — — 5 mA ∆VLINE Line Regulation VUNREG = 8V to 16V, no load RSER = (16V - VDD1) / ISHUNT(Max) — — 0.3 %/V Output Voltage Ripple (Stable) VUNREG = 8V to 16V, RSER = (16V - VDD1) / ISHUNT(Max) SEG alternately consumes the average current ISEG and ILOAD(Max). The SEG varies its consumption current once every 0.5ms(3) — — 100 mV VUNREG = 8V, RSER = (16V - VDD1) / ISHUNT(Max) ILOAD = 0mA to ILOAD(Max) — — 0.03 %/mA VUNREG = 12V, RSER = (16V - VDD1) / ISHUNT(Max) ILOAD = 0mA to ILOAD(Max) — — 0.03 %/mA VUNREG = 16V, RSER = (16V - VDD1) / ISHUNT(Max) ILOAD = 0mA to ILOAD(Max) — — 0.03 %/mA ∆VRIPPLE ∆VLOAD Rev. 1.00 Load Regulation 3 March 02, 2016 HT45F2020 Functional Description The value of RSER is calculated as follows: The HT45F2020 sound effect generator device is designed to be used in conjunction with the Holtek supplied Sound Effect Generator Wizard, which will allow users to easily and rapidly develop their sound generator applications. The device offers the advantages of a fully internal shunt regulator allowing it to be used with a wide range of external power supply voltages with the simple addition of an external resistor and capacitor. RSER = (VUNREG – VDD) / ISUPPLY ; Where ISUPPLY = ISHUNT(Max) ≤ which should be less than or equal to 80mA The maximum value of the load current is calculated as follows: I LOAD(Max) = I SHUNT(Max) × (V UNREG(Min) – V DD1(Max) ) / (VUNREG(Max) − VOUT1(Min)) − ISTATIC(Measured) Where VUNREG(Max), VDD1(Max) = Maximum specification value for VUNREG and VDD1 respectively Shunt Regulator and VUNREG(Min), VDD1(Min) = Minimum specification value for VUNREG and VDD1 respectively A fully internal shunt regulator circuit is fully integrated within the device to provide regulated power to the internal circuitry. This enables the device to operate with a large input voltage range such as that which might be found in automotive applications. The only external components required are an external resistor between the external power supply and the VDD pin, and a capacitor between VDD and ground. Note that I SEG = sound effect generator current consumption measured when the generator toggles two I/O pins every 0.5ms with no load. Sound Effect Generator Wizard The device must be used together with the Holtek supplied Sound Effect Generator Wizard software. VUNREG ISUPPLY RSER Evaluation Board An evaluation board is available from Holtek to enable the easy development of user applications. This is used together with the Sound Effect Generator Wizard software and the Holtek e-Link to enable the user sound files to be programmed into the device. The evaluation board also allows the user to immediately play the files thus allowing for rapid evaluation of the required sound effects. ILOAD VDD CBYPASS ISHUNT Feedback Examination of the shunt regulator block diagram will reveal that the supply current will be determined by the value of the external RSER resistor. For this reason selection of this resistor value is an important issue. It is recommended that the following criteria are used when deciding on the value of RSER. Rev. 1.00 4 March 02, 2016 HT45F2020 Evaluation Board Circuit SW1 J1 R1 C1 12V Adapter 10uF 150/2W VDD C2 C3 104 2.2uF ~100uF C4 104 VSS 100ohm/0.2W Speaker OUT1 IO2 VDD ICPCK LS1 IO1 ICPDA GND OUT2 1 HT45F2020 4P2T Rev. 1.00 5 March 02, 2016 HT45F2020 Application Circuits 12V 12V Buzzer 750Ω/0.25W 750Ω/0.25W VDD OUT1 1kΩ Buzzer OUT2 22μF ~ 100μF IO2 IO1 VSS 1kΩ OUT1 VDD OUT2 22μF ~ 100μF 1kΩ IO2 IO1 VSS Fig 1 Fig 2 12V Speaker 12V 150Ω/2W 1N4148 750Ω/0.25W 100Ω Speaker VDD VDD OUT2 22μF ~ 100μF VSS OUT1 A03400 OUT2 22μF ~ 100μF IO2 IO1 10Ω OUT1 IO2 IO1 VSS Fig 3 Fig 4 12V 772 430Ω/0.25W VDD 22μF~ 100μF OUT1 OUT2 VSS 820Ω 772 945 945 820Ω IO2 IO1 882 150Ω 150Ω Speaker 882 Fig 5 Rev. 1.00 6 March 02, 2016 HT45F2020 Package Information Note that the package information provided here is for consultation purposes only. As this information may be updated at regular intervals users are reminded to consult the Holtek website for the latest version of the package information. Additional supplementary information with regard to packaging is listed below. Click on the relevant section to be transferred to the relevant website page. • Further Package Information (include Outline Dimensions, Product Tape and Reel Specifications) • Packing Meterials Information • Carton information Rev. 1.00 7 March 02, 2016 HT45F2020 6-pin SOT23-6 Outline Dimensions H Symbol A Min. Nom. Max. — — 0.057 A1 — — 0.006 A2 0.035 0.045 0.051 b 0.012 — 0.020 C 0.003 — 0.009 D — 0.114 BSC — E — 0.063 BSC — e — 0.037 BSC — e1 — 0.075 BSC — H — 0.110 BSC — L1 — 0.024 BSC — θ 0° — 8° Symbol Rev. 1.00 Dimensions in inch Dimensions in mm Min. Nom. Max. 1.45 A — — A1 — — 0.15 A2 0.90 1.15 1.30 b 0.30 — 0.50 C 0.08 — 0.22 D — 2.90 BSC — E — 1.60 BSC — e — 0.95 BSC — e1 — 1.90 BSC — H — 2.80 BSC — L1 — 0.60 BSC — θ 0° — 8° 8 March 02, 2016 HT45F2020 Copyright© 2016 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek's products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.00 9 March 02, 2016