Interfacing the PIC16F876 to ISD4003

ethinder · Joined: 26 Jan 2006 Posts: 1

Hi,

I am implementing the circuit shown below:

http://web.media.mit.edu/~earroyo/voice_chip/isd4003_pic16f876_sch.jpg

I am trying to connect the PIC to the PC. Any suggestions?

Ethi

treitmey · Joined: 23 Jan 2004 Posts: 1094 Location: Appleton,WI USA

I'd run MCLR,PGC and PGD out to a programming port/debug.
Cap to ground on MCLR is a no-no according to ICD2 doc. (get rid of doide too)
page 18
http://ww1.microchip.com/downloads/en/devicedoc/51331b.pdf
RC5 is mislabeled on PIC, should be RC6...unless you like to confuse yourself.

Are you trying to talk on serial port? I expected to see RC6,RC7 going to a
max232 chip and out to a DB9F serial port.
OR
I myself have been using the FTDI FT232BM chips talking to the PC USB port.
It converts the USB to serial that would go into RC6,RC7 like above.