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M58PR256LE 数据表(PDF) 83 Page - STMicroelectronics |
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M58PR256LE 数据表(HTML) 83 Page - STMicroelectronics |
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83 / 119 page  M58PR256LE, M58PR512LE, M58PR001LE DC and AC parameters 83/119 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 33. Reset and power-up AC characteristics Symbol Parameter Test condition 108 MHz / 66 MHz Unit tPLWL tPLEL tPLGL tPLLL Reset Low to Write Enable Low, Reset Low to Chip Enable Low, Reset Low to Output Enable Low, Reset Low to Latch Enable Low During program Min 25 µs During erase Min 30 µs Other conditions Min 80 ns tPHWL tPHEL tPHGL tPHLL Reset High to Write Enable Low Reset High to Chip Enable Low Reset High to Output Enable Low Reset High to Latch Enable Low Min 30 ns tPLPH (1),(2) RP Pulse width Min 50 ns tVDHPH (3) Supply voltages High to Reset High Min 300 µs 1. The device reset is possible but not guaranteed if tPLPH < 50 ns. 2. Sampled only, not 100% tested. 3. It is important to assert RP to allow proper CPU initialization during power-up or reset. |
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