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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega128 датащи(PDF) 294 Page - ATMEL Corporation |
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ATmega128 датащи(HTML) 294 Page - ATMEL Corporation |
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294 / 386 page  294 2467S–AVR–07/09 ATmega128 3. Set DATA = Address high byte ($00 - $FF). 4. Give XTAL1 a positive pulse. This loads the address high byte. H. Program Page 1. Set BS1 = “0” 2. Give WR a negative pulse. This starts programming of the entire page of data. RDY/BSY goes low. 3. Wait until RDY/BSY goes high. (See Figure 137 for signal waveforms) I. Repeat B through H until the entire Flash is programmed or until all data has been programmed. J. End Page Programming 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 136. Addressing the Flash which is Organized in Pages Note: 1. PCPAGE and PCWORD are listed in Table 124 on page 292. 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 |
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