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ATtiny261A Datasheet(PDF) 179 Page - ATMEL Corporation |
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ATtiny261A Datasheet(HTML) 179 Page - ATMEL Corporation |
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179 / 292 page  179 8197A–AVR–10/09 ATtiny261A/461A/861A Figure 18-4. Addressing the Flash Which is Organized in Pages Note: PCPAGE and PCWORD are listed in Table 18-7 on page 170. In the figure below, “XX” means don’t care. The numbers in the figure refer to the programming description above. WR Figure 18-5. Flash Programming Waveforms 18.7.6 Programming the EEPROM The EEPROM is organized in pages, see Table 18-8 on page 170. When programming the EEPROM, the program data is latched into a page buffer. This allows one page of data to be 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 0x10 ADDR. LOW DATA LOW ADDR. HIGH DATA HIGH DATA LOW ADDR. LOW DATA HIGH DATA XA1 / BS2 XA0 PAGEL / BS1 XTAL1 WR RDY / BSY RESET +12V OE XXX 1 STEP 7 5 6 4 3 2 4 3 2 8 0x00 9 |
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