AP8842

Integrated Circuits Inc. aP8842 A PLUS MAKE YOUR PRODUCTION A-PLUS VOICE OTP IC aP8842 – 42 VOICE OTP APLUS INTEGRATED CIRCUITS INC. Sales E-mail: Address: 3 F-10, No. 32, Sec. 1, Chenggung Rd., Taipei, Taiwan 115, R.O.C. (115) 32 3 10. TEL: 886-2-2782-9266 FAX: 886-2-2782-9255 WEBSITE : http: //www.aplusinc.com.tw sales@aplusinc.com.tw Technology E-mail: service@aplusinc.com.tw Ver 1.3 1 Integrated Circuits Inc. aP8842 42 sec VOICE OTP Features 42 Sec Voice Length at 6 KHz Combination of voice building blocks extends the duration of playback Voice data re-use saves memory space Maximum 30 voice groups 8 trigger pins, S1 to S8 for the 8 voice groups ( group1 ~ 8 ) SBT for sequential playblack the rest of voice groups & for CPU mode trigger S1 to S5 in CPU trigger mode to trigger all 30 voice groups Holdable, Unholdable, Edge, Level triggering option Debounce time : 22ms for both Key and CPU mode @ 6K sampling rate IRP interrupt pin for master reset General Description aP8842 is a high quality voice synthesizer capable of varying playback duration. A proprietary ADPCM algorithm is used. The audio message is stored in a 1M bits on-chip EPROM which can store up to 42 seconds of voice data at 6 KHz sample rate. The aP8842 eliminates the need of complicated circuitry in voice playback but still achieves high voice quality for different kind of sounds. Combinations in sections achieve longer playback duration. A pair of PWM output pins, VOUT1 and VOUT2 provides direct drive to buzzer or speaker. A current output pin, COUT, enables the device to drive a speaker through a low cost NPN transistor. No complex filtering or amplifier circuit is needed. An automatic ramp-down function eliminates undesired noise at the end of playback. 3 programmable Outputs for STP stop pulse, BUSY and LEDs Built-in oscillator with a single external resistor to determine the sampling rate Built-in D/A converter, EPROM ADPCM data compression provides high sound quality Optional POP noise elimination function COUT pin drives speaker with a transistor VOUT1 and VOUT2 drives buzzer or speaker directly Auto-power down 2.7V – 3.8V single power supply operation Low standby current (