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I1810X Datasheet(PDF) 10 Page - Winbond |
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I1810X Datasheet(HTML) 10 Page - Winbond |
10 / 26 page I1800 SERIES 7.2. FUNCTIONAL DESCRIPTION EXAMPLE The following example operating sequence demonstrates the functionality of the I1800 devices. 1. Record a message filling the memory Pulling the REC pin HIGH initiates a record cycle form the beginning of the message space. The device will automatically power down after REC is release LOW. An EOM marker is written at the end of message. If REC is held HIGH, the recording continues until the message space has been filled. Once the message space is filled, recording ceases. 2. Edge-activated playback Pulling the PLAYE pin HIGH initiates a playback cycle from the beginning of the message space. When the device reaches the EOM marker, it automatically powers down. If a recording has filled the message space, the entire message is played. A subsequent rising edge on PLAYE initiates a new play cycle from the beginning of the memory. 3. Level-activated playback Pulling the PLAYL pin HIGH initiates a playback cycle from the beginning of the message space. When the device reaches the EOM marker, it automatically powers down. If a recording has filled the message space, the entire message is played. A subsequent rising edge on PLAYL initiates a new play cycle from the beginning of the memory. 4. Level-activated playback (truncated) If PLAYL is pulled LOW any time during the playback cycle, the device stops playing and enters the power-down mode. A subsequent rising edge on PLAYL initiates a new play cycle from the beginning of the memory. 5. Record (interrupting playback) The REC pin takes precedence over other operations. Any HIGH-going transition on REC initiates a new record operation from the beginning of the memory, regardless of any current operation in progress. 6. Record a message, partially filling the memory A record operation need not fill the entire memory. Releasing the REC pin LOW before filling the message space causes the recording to stop and an EOM marker to be placed. The device powers down automatically. 7. Playback a message that partially fills the memory Pulling the PLAYE or PLAYL pin HIGH initiates a playback cycle. The playback cycle ceases when the EOM marker is encountered and the device then powers down. - 10 - |
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