Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

The JTAG Debugger Based on ATmega644

Do you have any idea what the JTAG is? To be honest, it’s a parallel port interface for either JTAG or BDM debugging. Well, it might be a little bit slower than a Raven, but it’s a much stable and easy to use device than Raven did. Today’s project is all about the JTAG Debugger. For your information, this JTAG Debugger is based on an ATmega644 and it’s capable of controlling program execution by setting breakpoints and accessing registers and memory. The ATmega644 is the big brother of ATmega164, but it has one USART less. By the way, the ATmega644 has the following features, included: 64-Kbyte self programming Flash Program Memory 4-Kbyte SRAM 2-KbyteEEPROM 8 Channel 10-bit A/D converter JTAG interface for on-chip debug Different from the other project, this… Continue reading