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I can't record voice by IC ISD1700 it not response anything.

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M

mmc01

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I try to use ISD1700 like this **broken link removed** in page 16.

I want to use with microphone . I use Rosc pin 20 = 100k(ohm) . All Capacitor ceramic = 0.1uF. All capacitor electrolite = 4.7uF 25V. I don't use pin 2,3,17,27 not connect with anything. I don't understand how to connect different GND. I connect every GND to same GND and all VCC (vcca,vccd,vccp) to same vcc 5V from power supply . when I test my circuit it not have sound. I check speaker it ok but it have no sound from circuit. I use 8 Ohm 1.5W speaker. How to use ISD1700 with microphone. please help me.
 

LED blink 7 times when I press REC, PLAY button . It have no sound from circuit. when I press ERASE button hold to LED blink 7 times and I press REC button again it still blink 7 times as usual. How to use ISD1700 to record voice ?
 

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