ML2502 Ver la hoja de datos (PDF) - Oki Electric Industry
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ML2502 Datasheet PDF : 20 Pages
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1.4 Phrase 2 Recording Operation
ML2502
(1) Keep on inputting “H” level to the REC2 pin to power up and start recording from the top
address of the memory. Recording goes on while the REC2 pin being held “H” level.
(2) The LSI automatically ends recording when the last address of the memory has been
reached.
(3) The LSI automatically shifts to low-power consumption mode after recording ends.
(4) To stop recording for Phrase 2 before reaching the last address, bring the REC2 pin down
to “L” level. The LSI automatically shifts to low-power consumption mode after recording
stops.
(5) During recording operation any signal input to other pins than the REC2 is disregarded.
Note: Re-recording always causes to overwrite the existing recording data for a given phrase.
REC1
Start
Invalid Input
Stop
REC2
MON
Status Power Down Powering Up
Recording
Powering Down Power Down
Stopping Process
Figure 1.4 Timing Chart for Phrase 2 Recording Operation
1.5 Phrase 2 Playback Operation
(1) Input a “H” pulse to the PLAY2 pin to power up and start playback from the center address of
the memory.
(2) The LSI automatically ends playback when the last address of the recorded phrase has been
reached.
(3) The LSI automatically shifts to low-power consumption mode after playback ends.
(4) To stop playback of Phrase 2 before reaching its last address, input a “H” pulse again to the
PLAY1 or PLAY2 pin. This will cause the LSI to stop playback and then automatically shift
to low-power consumption mode.
(5) During playback operation signal input to the PLAY1 or PLAY2 pin only is valid, any other
signal input is disregarded
Start Pulse
Stop Pulse
PLAY1
PLAY2
MON
Stop
Status Power Down Powering Up
Playing Back
Powering Down Power Down
Figure 1.5 Timing Chart for Phrase 2 Playback Operation
ML2502 Data Sheet (Revision 8.0)
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