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I1806P датащи(PDF) 8 Page - Winbond |
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I1806P датащи(HTML) 8 Page - Winbond |
8 / 26 page I1800 SERIES PIN NAME PIN NO. I/O FUNCTION ROSC 19 I The Resistor Controlled Oscillator input: This enables the user to vary the I1800 device record and playback duration. The resistor connected between the ROSC pin and VSS (R2) determines the sample frequency and the filter upper pass band for the I1800 device. Please refer to the table in Duration Section for duration selection. FT 25 I Feed Through: This mode allows use of the speaker drivers for external signals. The signal between the MIC and MIC_REF pins will pass through the AGC, the filter and the speaker drivers to the speaker outputs SP+ and SP-. The input FT controls the feed through mode. To operate this mode, the control pins REC, PLAYE and PLAYL are held LOW at VSS. The pin FT is held HIGH to VCC. For normal operation of record, play and power down, the FT pin is held at VSS. The FT pin has a weak pull-down to VSS. XCLK 26 The External Clock input: For the I1800 devices has an internal pull-down resistor. This pin is used for test purposes only. Do not bond this pad. RECLED 28 O Record LED output: The RECLED output is LOW during a record cycle. It can be used to drive an LED to provide feedback that a record cycle is in progress. In addition, RECLED pulses LOW momentarily when and End-of-Message (EOM) or end-of-memory marker is encountered in a playback cycle. Note: 1 The REC signal is internally debounced on the rising edge to prevent a false re-triggering from a push- button switch. - 8 - |
Аналогичный номер детали - I1806P |
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Аналогичное описание - I1806P |
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