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What should you know about the atmega162 It may possible that reading flash an eprom from it is locked by FUSES.so if your atmega is locked by LOCKFUSE.only an external paralel programmer can reset this FUSE by High Voltage Paralel Programming (HVPP).you should unsolder atmega162 from PCB before doing HVPP,because normally your atmega and components runs 3-5 volt.HVPP uses 12-13,5 V to programm and can damage components on PCB.

I use normally the USBASP Programmer from: USBASP AVR Programmer - 16.00 it has ISP10 connector.

For correct connection,you need on atmega MOSI pin1 on atmega pin1 on USBASP MISO pin2.

You can also choose other clock rating(1MHZ) but atmega wont work properly inside vcds interface.as it is connected to 7,2.

If you connect correct,and atmega is recognised correct and you have trouble writing it,uncheck in write options all cases,and do step by step by yourself.

Set Fuses and Lockbits.write Fuses and Lockbits Load eprom data,write eprom data Load flash data,write Flash data Verify Flash Verify Eprom To be sure always start by Command: read chipsignature If you cant read: Maybee SPIEN FUSE is not set,can be done only by HVPP You missed correct wiring up Offboard need to add Clock to XTAL1.

On HVPP and External paralell Programmer no need for clock to XTAL1.

But i prefer USB Programmers When you have no connection,try decrementing resistors until 0.

The resistors are not for protecting Atmega.they are there for protecting Paralell Port.so check all wires if everything fine before powering up.

If LOCKFUSES are set,you need first erase entire memory in flash and eprom before enabling SPIEN is possible.

But depending on programmer,checked FUSE can be enabled or disabled.you need check the bit.

Have you particularly managed to program fuses (e.g.

EESAV) on a locked atmega without destroying content of eeprom area Could be possible Thank you.

Atmega162 Vcds Tv For Free

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Atmega162 Vcds Update