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ATmega165 Datasheet(PDF) 251 Page - ATMEL Corporation |
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ATmega165 Datasheet(HTML) 251 Page - ATMEL Corporation |
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251 / 336 page  251 ATmega165/V 2573G–AVR–07/09 Serial Programming Pin Mapping Table 108. Pin Values Used to Enter Programming Mode Pin Symbol Value PAGEL Prog_enable[3] 0 XA1 Prog_enable[2] 0 XA0 Prog_enable[1] 0 BS1 Prog_enable[0] 0 Table 109. XA1 and XA0 Coding XA1 XA0 Action when XTAL1 is Pulsed 0 0 Load Flash or EEPROM Address (High or low address byte determined by BS1). 0 1 Load Data (High or Low data byte for Flash determined by BS1). 1 0 Load Command 1 1 No Action, Idle Table 110. Command Byte Bit Coding Command Byte Command Executed 1000 0000 Chip Erase 0100 0000 Write Fuse bits 0010 0000 Write Lock bits 0001 0000 Write Flash 0001 0001 Write EEPROM 0000 1000 Read Signature Bytes and Calibration byte 0000 0100 Read Fuse and Lock bits 0000 0010 Read Flash 0000 0011 Read EEPROM Table 111. Pin Mapping Serial Programming Symbol Pins I/O Description MOSI PB2 I Serial Data in MISO PB3 O Serial Data out SCK PB1 I Serial Clock |
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