>> >> Pin 1 (the one with the dot, edge or other mark): open >> Pin 7: Ground >> Pin 8: connect to XTAL1 >> Pin 14: VCC >> Leave XTAL2 open. >> >> Pin numbering is the same as 14 pin DIL. >> >> Mit freundlichen Gr��en >> >> Frank-Christian Kr�gel > > Thanks. The crystal gives a correct 12MHz signal, but I still couldn't > program the atmega48. All I did was to change the clock from internal > 8Mhz to internal 128kHz (and disabled CLKDIV8 because of the warning > message), and all of a sudden, I was completely locked out of the > system. > I have a STK500 programmer, but not the development board. Is there a > way to do high voltage serial programming on ATmega48? > > Cheers, > HoiHow about reducing your programming clock speed? Can't run ISP clock at high frequency when the CPU is running at low frequency. Also, you cannot run > 10 MHz CPU clock, unless you increase voltage. -- Best Regards, Ulf Samuelsson This is intended to be my personal opinion which may, or may not be shared by my employer Atmel Nordic AB
Locked out of ATmega48
Started by ●June 16, 2008
Reply by ●June 16, 20082008-06-16