64-megabit 2.7-volt Only Dual-interface DataFlash AT45DB642

Table 1. Read CommandsCommand SCK/CLK Mode OpcodeContinuous Array ReadBurst Array Read with Synchronous DelayMain Memory Page ReadBuffer 1 ReadBuffer 2 ReadStatus Register ReadInactive Clock Polarity Low or HighSPI Mode 0 or 3Inactive Clock Polarity Low or HighSPI Mode 0 or 3Inactive Clock Polarity Low or HighSPI Mode 0 or 3Inactive Clock Polarity Low or HighSPI Mode 0 or 3Inactive Clock Polarity Low or HighSPI Mode 0 or 3Inactive Clock Polarity Low or HighSPI Mode 0 or 368HE8H69HE9H52HD2H54HD4H56HD6H57HD7HTable 2. Program and Erase CommandsCommand SCK/CLK Mode OpcodeBuffer 1 Write Any 84HBuffer 2 Write Any 87HBuffer 1 to Main Memory Page Program with Built-in Erase Any 83HBuffer 2 to Main Memory Page Program with Built-in Erase Any 86HBuffer 1 to Main Memory Page Program without Built-in Erase Any 88HBuffer 2 to Main Memory Page Program without Built-in Erase Any 89HPage Erase Any 81HBlock Erase Any 50HMain Memory Page Program Through Buffer 1 Any 82HMain Memory Page Program Through Buffer 2 Any 85HTable 3. Additional CommandsCommand SCK/CLK Mode OpcodeMain Memory Page to Buffer 1 Transfer Any 53HMain Memory Page to Buffer 2 Transfer Any 55HMain Memory Page to Buffer 1 Compare Any 60HMain Memory Page to Buffer 2 Compare Any 61HAuto Page Rewrite Through Buffer 1 Any 58HAuto Page Rewrite Through Buffer 2 Any 59HNote:In Tables 2 and 3, an SCK/CLK mode designation of “Any” denotes any one of the four modes of operation (Inactive ClockPolarity Low, Inactive Clock Polarity High, SPI Mode 0, or SPI Mode 3).12 AT45DB6421638F–DFLSH–09/02