debugWIRE and Serial Downloading

Jan 30, 2005 0 Replies

Hello All!



ðÒÉ ÐÒÏÇÒÁÍÍÉÒÏ×ÁÎÉÉ Fuse ÂÉÔÁ [DWEN=0] ×Ù×ÏÄ nRESET ÐÒÅ×ÒÁÝÁÅÔÓÑ × Ä×ÕÎÁÐÒÁ×ÌÅÎÎÙÊ ×Ù×ÏÄ debugWIRE Á ×ÎÅÛÎÉÊ ÓÂÒÏÓ ÓÔÁÎÏ×ÉÔÓÑ ÎÅÄÏÓÔÕÐÎÙÍ. ÷
955-Ê ÓÔÒÏËÅ ATtiny2313.xml ÞÉÔÁÀ "<FuseWarning>1,0x80,0x00,WARNING! Enabling DEBUGWIRE will make the ISP interface inaccessible!</FuseWarning>". ÷ÏÐÒÏÓ, ËÁË ÐÏÓÌÅ ÐÒÏÇÒÁÍÍÉÒÏ×ÁÎÉÑ DWEN=0 ×ÎÏר ×ÅÒÎÕÔØ DWEN=1?
÷ äÁÔÁÛÉÔÅ ÎÁ ATtiny13 ÅÓÔØ ÓÌÅÄÕÀÝÅÅ: Program memory can be read out via the debugWIRE interface when the DWEN fuse is programmed, even if the Lock Bits are set. Thus, when Lock Bit security is required, should always debugWIRE be disabled by clearing the DWEN fuse.
åÓÌÉ Ñ ÐÒÁ×ÉÌØÎÏ ÐÏÎÑÌ, ÔÏ ÇÄÅ-ÔÏ ÏÐÉÓÁÎ ÐÒÏÔÏËÏÌ ÏÂÍÅÎÁ ÐÏ debugWIRE É, ×ÅÒÏÑÔÎÏ ÞÅÒÅÚ ÎÅÇÏ ÍÏÖÎÏ ÐÅÒÅÐÒÏÇÒÁÍÍÉÒÏ×ÁÔØ DWEN fuse?
ôÁËÏÊ ÖÅ ×ÏÐÒÏÓ ÐÏ RSTDISBL Fuse. äÌÑ ATtiny13 ÉÍÅÅÍ: When programming the RSTDISBL Fuse, High-voltage Serial programming has to be used to change fuses to perform further programming.
ô.Å., ÅÓÌÉ ÉÍÅÅÛØ Low Voltage Serial Downloading, ÔÏ Ó DWEN fuse É Ó RSTDISBL fuse ÌÕÞÛÅ ÎÅ "ÂÁÌÏ×ÁÔØÓÑ"?
ó Õ×ÁÖÅÎÉÅÍ, þÉÇÒÉÎÅà ÷ÌÁÄÉÓÌÁ×.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required