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ISD1610BPY Datasheet(PDF) 7 Page - Winbond |
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ISD1610BPY Datasheet(HTML) 7 Page - Winbond |
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7 / 23 page  ISD1600B SERIES Publication Release Date: Jan. 23, 2007 - 7 - Revision 1.2 5. PIN DESCRIPTION SOIC / PDIP PIN NAME PIN NO. FUNCTIONS VSSD 1 Digital Ground : VSSD is the ground for digital circuits. It is important to have a separate path for each ground back to the system ground terminal to minimize noise. REC 2 Record : The device starts recording whenever REC transits from High to Low and stays at Low. Recording stops when the signal returns to High. This pin has an internal pull-up resistor [1] and an internal debounce on falling edge. PLAYE 3 Edge-trigger Playback : A playback operation starts when this input detects a low going signal exceeding the specified debounced time. This pin has an internal pull-up resistor [1] and an internal debounce on both falling & rising edge. PLAYL 4 Level-trigger Playback : A playback operation begins when this input detects a low going signal and remains at Low. Playback stops when the signal returns to High. This pin has an internal pull-up resistor [1] and an internal debounce on falling edge. VSSA 5 Analog Ground : VSSA is the ground for analog circuits. It is important to have a separate path for each ground back to the system ground terminal to minimize noise. MIC+ 6 Microphone Positive Input : The input transfers the signal to the preamplifier. The internal Automatic Gain Control (AGC) circuit controls the gain of the preamplifier. An external microphone should be AC coupled to this pin via a series capacitor. The capacitor value, together with an internal 10 KΩ resistance on this pin, determines the low- frequency cutoff for the ISD1600B passband. MIC- 7 Microphone Negative Input : This is the inverting input to the microphone preamplifier. It provides input noise- cancellation, or common-mode rejection, when the microphone is connected differentially to the device. SP- 8 Speaker Negative : The SP-, Class D PWM output, provides a differential output with SP+ pin to drive 8Ω speaker or buzzer. During power down or recording, this pin is tri-stated. VSSP 9 PWM Ground : VSSP is the ground for PWM speaker driver. It is important to have a separate path for each ground back to the system ground terminal to minimize noise. |
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