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M58LR128HT 数据表(PDF) 71 Page - STMicroelectronics |
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M58LR128HT 数据表(HTML) 71 Page - STMicroelectronics |
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71 / 112 page  M58LR128HT, M58LR128HB DC and AC parameters 71/112 Figure 17. Reset and Power-up AC waveforms AI06976 W, RP E, G, VDD, VDDQ tVDHPH tPLPH Power-Up Reset tPLWL tPLEL tPLGL tPLLL L tPHWL tPHEL tPHGL tPHLL Table 27. Reset and Power-up AC characteristics Symbol Parameter Test Condition 85 Unit tPLWL tPLEL tPLGL tPLLL Reset Low to Write Enable Low, Chip Enable Low, Output Enable Low, Latch Enable Low During Program Min 25 µs During Erase Min 25 µs Other Conditions Min 80 ns tPHWL tPHEL tPHGL tPHLL Reset High to Write Enable Low Chip Enable Low Output Enable Low Latch Enable Low Min 30 ns tPLPH (1),(2) RP Pulse Width Min 50 ns tVDHPH (3) Supply Voltages High to Reset High Min 150 µs 1. The device Reset is possible but not guaranteed if tPLPH < 50ns. 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. |
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