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DOC7707 데이터시트(PDF) 261 Page - List of Unclassifed Manufacturers |
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DOC7707 데이터시트(HTML) 261 Page - List of Unclassifed Manufacturers |
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261 / 307 page ![]() 261 7707F–AVR–11/10 AT90USB82/162 Note: a = address high bits, b = address low bits, c = address extended bits, H = 0 - Low byte, 1 - High Byte, o = data out, i = data in, x = don’t care 25.8.2 Serial Programming Characteristics For characteristics of the Serial Programming module see “SPI Timing Characteristics” on page 265. Read Extended Fuse Bits 0101 0000 0000 1000 xxxx xxxx oooo oooo Read Extended Fuse bits. “0” = pro- grammed, “1” = unprogrammed. See Table 25-3 on page 244 for details. Read Calibration Byte 0011 1000 000x xxxx 0000 0000 oooo oooo Read Calibration Byte Poll RDY/BSY 1111 0000 0000 0000 xxxx xxxx xxxx xxxo If o = “1”, a programming operation is still busy. Wait until this bit returns to “0” before applying another command. Table 25-16. Serial Programming Instruction Set (Continued) Instruction Instruction Format Operation Byte 1 Byte 2 Byte 3 Byte4 |
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