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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega325P датащи(PDF) 279 Page - ATMEL Corporation |
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ATmega325P датащи(HTML) 279 Page - ATMEL Corporation |
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279 / 364 page  279 8023F–AVR–07/09 ATmega325P/3250P 1. 1. Set XA1, XA0 to “10”. This enables command loading. 2. Set DATA to “0000 0000”. This is the command for No Operation. 3. Give XTAL1 a positive pulse. This loads the command, and the internal write signals are reset. Figure 25-2. Addressing the Flash Which is Organized in Pages (1) Note: 1. PCPAGE and PCWORD are listed in Table 25-11 on page 276. Figure 25-3. Programming the Flash Waveforms(1) Note: 1. “XX” is don’t care. The letters refer to the programming description above. PROGRAM MEMORY WORD ADDRESS WITHIN A PAGE PAGE ADDRESS WITHIN THE FLASH INSTRUCTION WORD PAGE PCWORD[PAGEMSB:0]: 00 01 02 PAGEEND PAGE PCWORD PCPAGE PCMSB PAGEMSB PROGRAM COUNTER RDY/BSY WR OE RESET +12V PAGEL BS2 0x10 ADDR. LOW ADDR. HIGH DATA DATA LOW DATA HIGH ADDR. LOW DATA LOW DATA HIGH XA1 XA0 BS1 XTAL1 XX XX XX AB CD E B C D E G H F |
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