Integrated Circuits Inc.

aPR33A3

Ver. E

7/27

JAN 06 2014

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.