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

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Detailed Parallel Read Timing – SPI Mode 3 (Continued)Main Memory Page Read (Opcode: D2H)CSCLK 1 2 3 4 5 61 62 63 64 65 66 6768I/07-I/O0(INPUT)tSUCOMMAND OPCODECMD ADDR ADDR ADDR X X X XXXI/07-I/O0(OUTPUT)HIGH IMPEDANCEtVDATA OUTDATA DATA DATADATABuffer Read (Opcode: D4H or D6H)CSCLK 1 2 3 4 5 6 7 89tSUI/O7-I/O0(INPUT) CMD ADDR ADDR ADDR XI/O7-I/O0(OUTPUT)HIGH IMPEDANCEtVDATA OUTDATA DATA DATADATAStatus Register Read (Opcode: D7H)CSCLK 1 2 3 4tSUI/O7-I/O0(INPUT)CMDtVI/O7-I/O0(OUTPUT)HIGHIMPEDANCEDATA DATA DATASTATUS REGISTEROUTPUTHIGHIMPEDANCE32 AT45DB6421638F–DFLSH–09/02
AT45DB642Figure 1. Algorithm for Programming or Reprogramming of the Entire Array SequentiallySTARTprovide addressand dataBUFFER WRITE(84H, 87H)MAIN MEMORY PAGE PROGRAMTHROUGH BUFFER(82H, 85H)BUFFER TO MAINMEMORY PAGE PROGRAM(83H, 86H)ENDNotes: 1. This type of algorithm is used for applications in which the entire array is programmed sequentially, filling the array page-bypage.2. A page can be written using either a Main Memory Page Program operation or a Buffer Write operation followed by a Bufferto Main Memory Page Program operation.3. The algorithm above shows the programming of a single page. The algorithm will be repeated sequentially for each pagewithin the entire array.1638F–DFLSH–09/0233
Page 2: However, the use of either interfac
Page 5 and 6: AT45DB642As with the Continuous Arr
Page 7: AT45DB642BUFFER TO MAIN MEMORY PAGE
Page 10 and 11: This gives the DataFlash the abilit
Page 12 and 13: Table 1. Read CommandsCommand SCK/C
Page 14 and 15: Absolute Maximum Ratings*Temperatur
Page 16 and 17: AC Characteristics - Parallel Inter
Page 18 and 19: Reset Timing (Inactive Clock Polari
Page 20 and 21: Read OperationsThe following block
Page 23 and 24: AT45DB642Detailed Bit-level Read Ti
Page 29 and 30: AT45DB642Detailed Parallel Read Tim
Page 31: AT45DB642Detailed Parallel Read Tim
Page 35 and 36: AT45DB642Ordering Informationf SCKI
Page 37: Atmel HeadquartersCorporate Headqua

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

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