Pls help, ICD U40 programmer can not detect the target board

averafter · Joined: 22 Jul 2009 Posts: 1

Why my ICD U40 can not detect all the pic microchip (like 18F4520) controller that I have?
I have diagnosed my programmer with the newest CCSLOAD software, and it passed all the test, what should I do?

zul · Guest

Fail to read device id PIC877A. Device ID read as 0X3FFF vs expected 0XFFFF.
Pls help.

mayer_y · Joined: 02 Oct 2009 Posts: 2

Hello

Check with scope those lines :

RB7 - ICSPDAT - PGD
RB6 - ICSPCLK - PGC

If you see them on the scope - your programmer is OK
but if it still not working you have bigger problem.

Some of the programmer don't see the clock signal on the line.

You need to open the programmer and check them, on the board.

Mayer

(I had this problem - and I fixed it).

If have more question - send me mail:
[email protected]