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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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M28W640 数据表(PDF) 29 Page - STMicroelectronics |
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M28W640 数据表(HTML) 29 Page - STMicroelectronics |
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29 / 54 page  29/54 M28W640CT, M28W640CB Figure 12. Power-Up and Reset AC Waveforms Table 18. 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 M28W640C Unit 80 90 tPHWL tPHEL tPHGL Reset High to Write Enable Low, Chip Enable Low, Output Enable Low During Program and Erase Min 50 50 µs others Min 30 30 ns tPLPH (1,2) Reset Low to Reset High Min 100 100 ns tVDHPH (3) Supply Voltages High to Reset High Min 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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