Help me Can't programm PIC16F877 with ICD-S

[xav27]

Hello everybody,

I'm using PCW V3.187, ICD-S and PIC16F877-20/L

I just can't programm the chip using ICD-S :
After a "Download to Target" a window popup and says "Verification Result" all address are read 3FFF.
Configuration Fuse Actual : 7E 3E and should be 7E 3F !?
CPD is unchanged.
If I erase the chip and then Read Device Configuration the result is FF 3E
( RC,WDT,NOPUT,NOPROTECT,BROWNOUT,LVP,CPD,NOWRT,NODEBUG)

Here is my little test programm :

#if defined(__PCM__)
#include <16F877.h>
#fuses HS,NOLVP,NOCPD
#use delay(clock=20000000)
#use rs232(baud=115200, xmit=PIN_C6, rcv=PIN_C7, PARITY=N)
#endif

main() {

puts("\r\n");
printf("Test PIC16F877 Date : ");
puts(__DATE__);
while(TRUE);
}

What is goin wrong ?
Can anyone help me ?

Thanks in advance
Xavier

[Haplo]

3FFF indicates a blank chip. Make sure all the connections from the ICD to your chip are correct.

[xav27]

Thanks Haplo,

It was just because I had Vcc too low ....

Sorry for all

Xavier