Dear Members,

Can any body show me the connection between PIC16F877 and ISD4002. I connected them and nothing is working. I have decided to start the troubleshooting with the connection. My connection was as follow (both have ICs DIP pachaging):

PIC16F877 ISD4002

Pin 18 Pin 28

Pin 23 Pin3

Pin 24 Pin 2

Pin 1 in ISD4002 is connected to ground because I need it always in slave mode. Pin 7 in PIC16F877 is connected to Vcc since I need it always in master mode.

Looking for any help.

Best regards,
Bakari