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M28W800 数据表(PDF) 25 Page - STMicroelectronics |
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M28W800 数据表(HTML) 25 Page - STMicroelectronics |
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25 / 42 page  25/42 M28W800BT, M28W800BB Figure 11. Power-Up and Reset AC Waveforms Table 15. 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 M28W800B Unit 70 85 90 100 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 AI03453b W, RP tPHWL tPHEL tPHGL E, G VDD, VDDQ tVDHPH tPHWL tPHEL tPHGL tPLPH Power-Up Reset |
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