PR33A3 Datasheet, PDF (9/27 Pages) Aplus Intergrated Circuits – Recording voice IC

Integrated Circuits Inc.
aPR33A3
Tape Mode using the Non-Auto Rewind Option of record
The following fig. showed a typical record circuit for non-auto rewind mode. We add a
slide-switch between /REC pin and VSS, and add 3 tact-switches /M0_Tg, /M1_Next,
/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. If you want to
record a new message, please press /M1_Next switch to go to the next section.
Note: After reset, /REC and /M0_Tg, /M1_Next, /M2_/CE and /M7_Option pin will be
pull-up to VDD by internal resistor.
On power-up, beep twice and the device is ready to record from the first address of memory
array. Send a falling edge to /M0_Tg pin and it will start recording & beep once. It must be
kept in low potential when recording. Send a rising edge to /M0_Tg pin and it will stop
recording & beep once. If /M0_Tg is kept in low potential and over the acceptable memory, it
will stop recording automatically & beep once. When /M0_Tg pin is rising in high potential,
the device will auto-rewind to the beginning place of the message & keep in standby mode to
wait for a new command. Please note the next recording operation will cover your original
message so the users have to send a falling edge to /M1_Next pin to let the device goes to
the next message to protect your original data.
This mode allows the users easily record a new message to cover the original message
unnecessarily triggering /M1_Tg pin. If you need to cover the other messages, send a falling
edge to /M2_CE pin to back to the beginning of the memory then send falling edges to
/M1_Next pin to the message that you want to be covered. When you cover this message, it
will be the last message. The original ones behind this message will be totally lost.
Ver. E
9/27
JAN 06 2014