Integrated Circuits Inc. aPR33AxDB-C1.1F aPR33AxDB-C1.1F (CPU Serial Mode) Demo Board User Guide aPR33AxDB-C1.1F is suitable for aPR33A1/ aPR33A3, 2 chips supporting CPU serial interface by /BUSY, CE , SI , CLK , SO 5pin. Part no. aPR33A1(170 sec) aPR33A3(680 sec) Function CPU series interface, max 1024 sections. Application Support Mic & Line in circuits. aPR33AxDB-C1.1F Function： ： S1: Record / Control A of seven-segment display Record : Long press two seconds you can hear “Beep” voice then start recording. Press again to finish your recording. Please note it can not be recorded if there are data in the section unless you delete the data at first. Control A of seven-segment display: Short press to select ○ A of seven-segment display S2: Erase All / Control B of seven-segment display Erase All : Long press two seconds the sevensegment display will be extinguished and show 00. Control B of seven-segment display : Short press to select ○ B of seven-segment display S3: Delete the recording content showed on the / play Delete the recording content showed on the: Long press two seconds the seven-segment display will flash one time and stay in original section. Play: short press to start the playback Short press again then stop the playback. ◎ For Line-In circuits & instruction set, Please visit http://www.aplusinc.com.tw for spec. Ver. 2 1/3 8/1/2013 Integrated Circuits Inc. aPR33AxDB-C1.1F VOICE OUTPUT The aPR33AxDB support 2 voice output mode, PWM and DAC. ( Default : PWM ) The PWM mode use VOUT1 and VOUT2 pin to drive speaker. The DAC mode use VOUT2 pin to connect your transistor or amplifier. (A) PWM (B) DAC ◎ For more DAC application, Please visit http://www.aplusinc.com.tw for data sheet. Ver. 2 2/3 8/1/2013 Integrated Circuits Inc. aPR33AxDB-C1.1F Ver. 2 Revised the description of operation. Ver. 1 Original version aPR33AxDB-C1.1F User Guide Ver. 2 3/3 8/1/2013