How i configure ATmega162 to run with external crystal osci.

[drbizzarow]

can any body tell me the fuses and their values

 

[mishra12]

check this Programming AVR fuse bits – oscillator settings - Scientific, embedded, biomedical, electronics contents.

 

[alexan_e]

I don't know why you are confused about that, if you take a look at page 36-37 of the datasheet

Device Clocking Option                      CKSEL3..0
External Crystal/Ceramic Resonator          1111 - 1000
External Low-frequency Crystal              0111 - 0100

And then table 7 in the next page the setting for each crystal range

CKSEL3:1              Frequency Range (MHz)
100(1)                         0.4 - 0.9
101                            0.9 - 3.0
110                            3.0 - 8.0
111                            8.0 -

for example for crystal of 8MHz or more you have to set CKSEL3,CKSEL2,CKSEL1,CKSEL0 to 1111 (all unprogrammed)

Alex