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M29W640GH Datasheet(PDF) 37 Page - Numonyx B.V |
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M29W640GH Datasheet(HTML) 37 Page - Numonyx B.V |
37 / 90 page M29W640GH, M29W640GL, M29W640GT, M29W640GB Command Interface 37/90 Figure 6. Write Enable controlled Program waveforms (8-bit mode) 1. Only the third and fourth cycles of the Program command are represented. The Program command is followed by the check of Status register Data Polling bit and by a read operation that outputs the data, DOUT, programmed by the previous Program command. 2. PA is address of the memory location to be programmed. PD is the data to be programmed. 3. DQ7 is the complement of the data bit being programmed to DQ7 (see Section 5.1: Data Polling Bit (DQ7)). 4. Addresses differ in x8 mode. 5. See Table 19: Write ac characteristics and Table 18: Read ac characteristics for details on the timings. AI12779 G W A0-A20/ A–1 DQ0-DQ7/ DQ8-DQ15 E 555h AOh PA PA 3rd cycle 4th cycle PD DQ7 DOUT DOUT tAVAV tAVAV tAVWL tWLAX Data Polling Read cycle tELWL tWHEH tELQV tGHWL tWLWH tWHWL tWHWH1 tGLQV tDVWH tWHDX tGHQZ tAXQX |
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