How replace ATMega 8515 with ATmega162

pinkfloyd11 · Joined: 02 Jul 2007 Posts: 248

Dear Friends

I'm working with ATmega8515 (Dip40) insert on STK500 16 MHz crystal ad all work good.
Now that my program need to have more flash I have try to replace it with ATmega162 but it don't work.

When I try to set the fuse appeare the "famous message" that say that the frequency of ISP must be 1/4 of clock ecc.

Why this message appeare?

What I must do for change from 8515 to 162 without problem?

Thanks

Luciano · Joined: 29 Nov 2004 Posts: 3149 Location: Italy

Ciao Giuseppe,

Which socket are you using on the STK500?
(The socket number is printed on the PCB just above the socket).

Best regards,

Luciano

pinkfloyd11 · Joined: 02 Jul 2007 Posts: 248

Ciao Luciano

the socket is SCKT3000D3.
I have partially resolved programming in High Voltage parallel mode both of my two new ATMega162.

Now 1 work good also in ISP mode and another work but "slowly". In the second of course serial don't work good printing strange character...

How is possible this if I have programmed both whith the same fuse and both are just acquired??

Thanks

P.S.
Di dove sei?

Luciano · Joined: 29 Nov 2004 Posts: 3149 Location: Italy

Hi Giuseppe,

If you use a 16MHz crystal with the STK500 make sure the ATmega162 fuses
are set as following in AVR Studio: