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M28W640FCT датащи(PDF) 29 Page - STMicroelectronics |
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M28W640FCT датащи(HTML) 29 Page - STMicroelectronics |
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29 / 55 page ![]() 29/55 M28W640FCT, M28W640FCB Figure 12. Power-Up and Reset AC Waveforms Table 19. Power-Up and Reset AC Characteristics Note: 1. The device Reset is possible but not guaranteed if tPLPH < 100ns. 2. Sampled only, not 100% tested. 3. It is important to assert RP in order to allow proper CPU initialization during power up or reset. Symbol Parameter Test Condition M28W640FCT, M28W640FCB Unit 70 85 90 10 tPHWL tPHEL tPHGL Reset High to Write Enable Low, Chip Enable Low, Output Enable Low During Program and Erase Min 50 50 50 50 µs others Min 30 30 30 30 ns tPLPH (1,2) Reset Low to Reset High Min 100 100 100 100 ns tVDHPH (3) Supply Voltages High to Reset High Min 50 50 50 50 µs AI03537b W, RP tPHWL tPHEL tPHGL E, G VDD, VDDQ tVDHPH tPHWL tPHEL tPHGL tPLPH Power-Up Reset |
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