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AT45DB321D-TU Folha de dados(PDF) 36 Page - ATMEL Corporation |
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AT45DB321D-TU Folha de dados(HTML) 36 Page - ATMEL Corporation |
36 / 57 page 36 3597N–DFLASH–04/09 AT45DB321D 19. Input Test Waveforms and Measurement Levels tR, tF < 2 ns (10% to 90%) 20. Output Test Load 21. AC Waveforms Six different timing waveforms are shown on page 37. Waveform 1 shows the SCK signal being low when CS makes a high-to-low transition, and waveform 2 shows the SCK signal being high when CS makes a high-to-low transition. In both cases, output SO becomes valid while the SCK signal is still low (SCK low time is specified as tWL). Timing waveforms 1 and 2 conform to RapidS serial interface but for frequencies up to 66 MHz. Waveforms 1 and 2 are compatible with SPI Mode 0 and SPI Mode 3, respectively. Waveform 3 and waveform 4 illustrate general timing diagram for RapidS serial interface. These are similar to waveform 1 and waveform 2, except that output SO is not restricted to become valid during the tWL period. These timing waveforms are valid over the full frequency range (max- imum frequency = 66 MHz) of the RapidS serial case. AC DRIVING LEVELS AC MEASUREMENT LEVEL 0.45V 1.5V 2.4V DEVICE UNDER TEST 30 pF |
Nº de peça semelhante - AT45DB321D-TU |
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Descrição semelhante - AT45DB321D-TU |
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