PR33A3 Datasheet, PDF (8/27 Pages) Aplus Intergrated Circuits – Recording voice IC

Integrated Circuits Inc.
aPR33A3
Tape Mode using the Auto Rewind Option of playback
The following fig. showed a typical playback circuit for auto rewind mode. We add a
slide-switch between /REC pin and VSS, and add 2 tact-switches /M0_Tg, /M2_CE pin and
VSS. When the slide-switch fixed in float side and press /M0_Tg pin, chip will start message
playback.
Note: After reset, /REC and /M0_Tg, /M2_/CE and /M7_Option pin will be pull-up to VDD by
internal resistor.
On power-up, beep twice and the device will be ready to playback from the first address of
memory array. Send a falling edge to the /M0_Tg pin to play the present message. During
the playback, send a falling edge to/M0_Tg pin then it will stop playing & beep once. After
stop playing, sending a falling edge to /M0_Tg pin again, it will start to play the next message.
After playing the last message, send a falling edge to /M0_Tg pin, and it will beep once to
remind you & auto-rewind to the first message. If /M0_Tg pin is kept in low potential
continually, the messages will be played to the last one & beep twice repeatedly. When
/M0_Tg pin is back to high potential, the beep voices stop and the message will be
auto-rewind to the first message.
Ver. E
8/27
JAN 06 2014