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数据搜索系统，热门电子元器件搜索 |
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ATmega16 数据表(PDF) 287 Page - ATMEL Corporation |
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ATmega16 数据表(HTML) 287 Page - ATMEL Corporation |
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287 / 357 page  287 2466S–AVR–05/09 ATmega16(L) Figure 143. Virtual Flash Page Load Register Virtual Flash Page Read Register The Virtual Flash Page Read Register is a virtual scan chain with length equal to the number of bits in one Flash page plus 8. Internally the Shift Register is 8-bit, and the data are automatically transferred from the Flash data page byte by byte. The first 8 cycles are used to transfer the first byte to the internal Shift Register, and the bits that are shifted out during these 8 cycles should be ignored. Following this initialization, data are shifted out starting with the LSB of the first instruction in the page and ending with the MSB of the last instruction in the page. This provides an efficient way to read one full Flash page to verify programming. Figure 144. Virtual Flash Page Read Register TDI TDO D A T A Flash EEPROM Fuses Lock Bits STROBES ADDRESS State Machine TDI TDO D A T A Flash EEPROM Fuses Lock Bits STROBES ADDRESS State Machine |
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