PR33A3 Datasheet, PDF (7/27 Pages) Aplus Intergrated Circuits – Recording voice IC

Integrated Circuits Inc.
aPR33A3
MESSAGE MODE
In tape message mode (C3.1), users can divide the memory sequentially much like traditional
cassette tape recorders. Within tape mode, there are two options - auto rewind and non-auto rewind
which will be applied by the /M7_Option pin.
Tape Mode using the Auto Rewind Option of record
The following fig. showed a typical record 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 VSS side and press /M0_TG tact switch, chip will start message
record and until the users release the tact-switch.
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, the device is ready to record or playback from the first address of the memory
array. Send a falling edge to the /M0_Tg pin the device will beep once and start recording. A
subsequent rising edge to the /M0_Tg pin will stop recording & beep once. If the M0_Tg pin
is kept in low potential to the end of the memory, the recording will stop automatically & beep
once regardless of the state of the /M0_Tg pin. The device returns to the standby mode and
the /M0_Tg pin is returned to high. Please note the next recording operation will totally cover
all your previous messages. Your new recorded message will be your first message and your
original messages will be lost.
Ver. E
7/27
JAN 06 2014