Aplus aPR33AxDB-C2.1F User manual

Integrated Circuits Inc. aPR33AxDB-C2.1F
Ver 2 1/3 08 / 01 / 2013
aPR33AxDB-C2.1F (Fixed 1/ 2/ 4/ 8 Message mode)
Demo Board User Guide
aPR33AxDB-C2.1F is suitable for aPR33A1 / aPR33A3, 2 chips with supporting Fixed 1/2/4/8
message, 4 modes.
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■ aPR33AxDB –C2.1F Function：
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◆RECORDING VOICE MESSAGE :
SLIDE SW to REC →Press and
hold TACT SW(S1~S8), hear BEEP
sound with LED on to start REC
through Microphone →Release
TACT SW, hear BEEP BEEP sound
with LED off to complete REC.
◆ PLAY VOICE MESSAGE :
SLIDE SW to PLAY →Press and
leave TACT SW(S1~S8) to play voice
with LED on. After play finished, LED
will off.

Integrated Circuits Inc. aPR33AxDB-C2.1F
Ver 2 2/3 08 / 01 / 2013
Depends on different IC, 1/2/4/8 message modes can have different recording duration per message
as below table：
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
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◎ For more DAC application, Please visit http://www.aplusinc.com.tw for data sheet.
 If needs Line- In circuit application, please visit http://www.aplusinc.com.tw for datasheet.

Integrated Circuits Inc. aPR33AxDB-C2.1F
Ver 2 3/3 08 / 01 / 2013
Ver. 2
Remove 4 application circuits.
Ver. 1
Original version aPR33AxDB-C2.1F User Guide