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| APLUS 32 to 40 SEC INSTANT VOICE ROM FEATURES * Voice length at - 8 KHz sampling is 32 seconds - 6 KHz sampling is 40 seconds * Silence compression to save memory * Eight trigger pins,TG1 to TG8 for 32 sections * SBT pin play-all or sequential play-all * 15 ms debounce time suitable for CDS * IRP interrupt pin stops playback at once * STP stop pulse generated at end of playback * BUSY signal for CPU control * Two LEDs flash at 3 Hz internal * 3.0V to 6V single power supply operation * Low standby current (<5 mA at 3V) * Auto-power down * Built-in oscillator, D/A converter, EPROM * ADPCM data compression * Optional pop noise elimination function * COUT pin drives speaker with a transistor * Development tools support * VOUT1 and VOUT2 drives buzzer directly * Sampling rate determined by external resistor * Holdable and unholdable triggering option * Industrial temperature available API840N JUNE 1999 GENERAL DESCRIPTION API840N is a high-quality voice synthesizer with a capacity of 32 to 40 seconds. A proprietary ADPCM algorithm is used. The audio message is stored in a 1024-Kbit on-chip EPROM. The API840N eliminates the need of complicated circuitry in voice playback (Figure 1) but still achieves high voice quality. Sounds such as human speech, animal sounds, musical sounds, and even special sound effects can be synthesized. Devices can be cascaded to achieve longer voice duration (Figure 3). Two devices can be configured in parallel (Figure 4) in order to achieve signal mixing without an external mixer allowing speeches to be mixed with background music synthesis from two different chips. The instant programming nature of the API840N allows a very short production turnaround time. There are no NRE charges that are usually required with conventional voice ROMs. Users now can apply a voice synthesis function as an additional feature to their products even when production volume is relatively small. It is also ideal for trial or engineering prototyping. As a result, the initial investment is minimal and the risk in the product development phase is reduced. The API840N provides a wide voltage operating range from 3.0V to 6.0V. A pair of PWM output pins, VOUT1 and VOUT2 provide direct drive to a buzzer (Figure 2). Voice quality from a buzzer is comparable to speaker output and power consumption is much lower. A current output pin, COUT, enables the device to drive a speaker with a low cost NPN transistor. No complex filtering or amplifier circuit is needed. An automatic ramp up/down function eliminates the undesired noise at the end of playback. Up to 32 sections are accessible through TG1 to TG8.The SBT trigger pin can be programmed to playback all 32 sections or sequentially from section 1 to 32. An interrupt pin (IRP) and stop pulse (STP) or BUSY signals provide handshaking with microprocessors or other API840N devices. All trigger pins give 15 ms debounce time and is ideal for CDS applications as in Figure 6. Two LED drivers are available, flashing on and off at approximately 3Hz intervals (Figure 5). The internal voltage compensation oscillator requires only one external resistor. Different sampling frequencies are determined by the external oscillator resistor value. 1 APLUS BLOCK DIAGRAM OSC OSCILLATOR ADDRESS SEQUENCER CLOCK GENERATOR API840N VOICE EPROM Vcc GND TG1 CONTROL LOGIC POP NOISE REDUCTION LED DRIVER ADPCM DECODER TG8 SBT IRP LED2 LED1 STP D/A COUT BUZZER BUFFER VOUT1 VOUT2 Programmable Options The API840N provides different control functions for user specified applications. They include: * Non-sequential or Sequential Play-all * Unholdable or Holdable trigger * STOP or BUSY signal selection * Automatic ramp-up/ramp-down or no ramp-up/ramp-down Silence Compression If a particular sound sequence includes periods of silence, the API840N will automatically compress the silence to save memory space. This compression will not affect playback of the sound sequence. ABSOLUTE MAXIMUM RATINGS(1) Symbol VTERM TBIAS TSTG Parameter Terminal Voltage with Respect to GND Temperature Under Bias Storage Temperature Value -0.5 to +7.0 -40 to +85 -55 to +125 Unit V C C Notes: 1. Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. OPERATING RANGE Range Ambient Temp. 0C to +70C -40 C to +85C Vcc 3.0V to 5.0V 3.0V to 5.0V Commercial Industrial 2 APLUS SECTION TRIGGERING TG1 HIGH NC NC NC NC NC NC NC HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC HIGH HIGH HIGH TG2 NC HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC HIGH HIGH TG3 NC NC HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC HIGH TG4 NC NC NC HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC HIGH HIGH HIGH HIGH NC NC NC NC TG5 NC NC NC NC HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC HIGH HIGH HIGH HIGH NC NC NC TG6 NC NC NC NC NC HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC HIGH HIGH HIGH HIGH NC NC API840N TG7 NC NC NC NC NC NC HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC HIGH HIGH HIGH HIGH NC TG8 NC NC NC NC NC NC NC HIGH NC NC NC NC NC NC HIGH HIGH NC NC NC NC NC HIGH HIGH HIGH NC NC NC NC HIGH HIGH HIGH HIGH Section 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 3 APLUS PIN DESCRIPTIONS Name TG8 LED 1 API840N PIN CONFIGURATION Function Trigger Switch 8, Internal Pull LOW, Active HIGH Drives First LED Flash at 3 Hz, Active LOW PWM Audio Signal Output for Buzzer Compliment PWM Audio Signal Output for Buzzer Power Ground Generate 30 ms Pulse or Busy Signal After Voice Playback Drives Second LED Flash at 3 Hz, Active LOW Current Output from Internal DAC for Speaker Playback Oscillator Resistor Pin to Control Sampling Frequency Trigger Switch 5, Internal Pull LOW, Active HIGH Trigger Switch 6, Internal Pull LOW, Active HIGH Program Power Supply, No Connect When Voice Playback I/O I O O O O O O I I I I I I I I I I 20-Pin 300-mil PDIP TG8 LED1 VOUT1 VOUT2 GND STP LED2 COUT OSC TG5 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 TG7 IRP SBT TG4 TG3 VCC TG2 TG1 VPP TG6 VOUT1 VOUT2 GND STP/BUSY LED 2 COUT OSC TG5 TG6 VPP TG1 TG2 VCC TG3 TG4 SBT IRP TG7 Trigger Switch 1, Internal Pull LOW, Active HIGH Trigger Switch 2, Internal Pull LOW, Active HIGH Positive Power Supply Trigger Switch 3, Internal Pull LOW, Active HIGH Trigger Switch 4, Internal Pull LOW, Active HIGH One Key or Sequential Trigger, Internal Pull LOW, Active HIGH Interrupt to Stop Playback, Internal Pull LOW, Active HIGH Trigger Switch 7, Internal Pull LOW, Active HIGH Note: 1. The following pins are used to program data into the memory on the chip: pins 5, 6, 7, 9, 12, 15, 18 and 19. 4 APLUS BONDING DIAGRAM Pin 1 2 3 6 7 8 9 10 11 12 13 14 Y 15 X (0,0) Note: Substrate must be connected to GND Pad size = 100 mm x 100 mm 5 4 3 2 1 20 19 18 17 16 API840N BONDING PARAMETERS Name TG8 LED1 X 3451.9 3451.9 3451.9 3451.9 3368.10 137.18 100.4 100.4 100.4 100.4 100.4 100.4 100.4 100.4 187.05 3372.5 3451.9 3451.9 3451.9 3451.94 Y 1599.7 1861.0 2147.6 2444.5 2803.35 2795.93 2486.3 2245.0 1790.0 1469.5 1230.0 989.6 662.3 422.7 113.78 141.8 581.5 836.0 1090.6 1345.13 VOUT1 VOUT2 GND STP LED2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 COUT OSC TG5 TG6 VPP TG1 TG2 Die size:3628mm x 3797mm VCC TG3 TG4 SBT IRP TG7 DC CHARACTERISTICS Symbol VCC ISB IOP VIH VIL IOH IOL ICO ISTPH TSTPL ILED DF/F Parameter Description Operating Voltage Standby Current Operating Current Input HIGH Voltage Input LOW Voltage VOUT LOW O/P Current VOUT HIGH O/P Current COUT O/P Current STP LOW O/P Current STP HIGH O/P Current Output Current LED Frequency Stability VCC = 3.0V, I/O Open Vcc = 3.0V, I/O Open Vcc = 3.0V Vcc = 3.0V Vcc = 3.0V, VOUT = 0V Vcc = 3.0V, VOUT = 3.0V Vcc = 3.0V, VCOUT = 0.7V Vcc = 3.0V, VSTP = 0V Vcc = 3.0V, VSTP = 3.0V Vcc = 3.0V - 6.0V FOSC(3V) - F OSC(3.5V) FOSC (3V) Condition Min. 3.0 2.5 -0.3 6 Typ. 4.5 1 3.0 0 -12 12 -2 -5 5 8 Max. 5.0 5 100 3.5 0.3 10 5 Unit V mA mA V V mA mA mA mA mA mA % 5 APLUS TIMING DIAGRAM PULSE TRIGGERED. a. Trigger is shorter than a phrase output API840N b. Trigger is longer than a phrase output TG1 TG2 COUT STP LED Phrase 2 Phrase 1 Phrase 2 Phrase 2 LEVEL TRIGGERED a. Trigger is shorter than a phrase output b. Trigger is longer than a phrase output TG1 TG2 Phrase 2 Phrase 1 Phrase 2 Phrase 2 COUT LED SINGLE BUTTON TRIGGER, NON-SEQUENTIAL PLAY-ALL (SBT) a. Pulse Triggered SBT COUT Phrase 1 Phrase 2 Phrase N Phrase 1 Phrase N Phrase 1 b. Level Triggered SBT COUT Phrase 1 Phrase 2 Phrase 1 Phrase N Phrase 1 6 APLUS SINGLE BUTTON TRIGGER, SEQUENTIAL (SBT) a. Pulse Triggered SBT COUT Phrase 1 Phrase 2 Phrase 2 Phrase 2 API840N Phrase N Phrase 1 b. Level Triggered SBT COUT Phrase 1 Phrase 2 Phrase 2 Phrase 2 Phrase N Phrase 1 7 APLUS APPLICATION CIRCUITS Vcc SP OSC TG1 TG2 TG3 TG4 TG5 TG6 TG7 TG8 SBT IRP COUT API840N Vcc VOUT1 OSC TG1 TG2 TG3 TG4 TG5 TG6 TG7 TG8 SBT IRP VOUT2 PIEZO BUZZER ROSC ROSC R GND GND Figure 1. Typical Application with Speaker Figure 2. Typical Application with Piezo Buzzer ROSC OSC Vcc ROSC OSC Vcc SP COUT COUT SBT IRP SBT STP GND IRP GND R Figure 3. Cascade Application 8 APLUS APPLICATION CIRCUITS Vcc OSC TG1 TG2 TG3 TG4 TG5 TG6 TG7 TG8 SBT IRP GND COUT API840N Vcc SP OSC TG1 TG2 TG3 TG4 TG5 TG6 TG7 TG8 SBT IRP GND COUT ROSC ROSC R Figure 4. Parallel Application (Mixing two speeches or speech with background music) ROSC OSC TG1 TG2 TG3 TG4 TG5 TG6 TG7 TG8 SBT IRP Vcc SP COUT R LED2 LED1 GND Figure 5. LED Application 9 APLUS APPLICATION CIRCUITS ROSC CDS OSC COUT SBT IRP GND Vcc API840N SP R SW8 ROSC SW5 SW1 SW6 SW2 Vcc SP OSC TG1 TG2 COUT SW7 TG3 SW3 R GND TG4 SW4 Figure 6. CDS Application and Additional Trigger Notes: The following are typical values: 1. ROSC = 2.0 M OHM. 2. B for N (NPN transistor) > 130. 3. SP = 8 OHM 1/4W. 4. Piezo buzzer resonant frequency = 1 KHz. 10 |
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