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M58LW064 数据表(PDF) 30 Page - STMicroelectronics |
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M58LW064 数据表(HTML) 30 Page - STMicroelectronics |
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30 / 53 page ![]() M58LW064A, M58LW064B 30/53 Table 24. Asynchronous Latch Enable Controlled Read and Page Read (TA = 0 to 70°C, –40 to 85°C, VDD = 2.7V to 3.6V, VDD = 1.8V to VDD) Symbol Parameter Test Condition Min Max Unit tAVLL Address Valid to Lacth Enable Low E=VIL 10 ns tAVQV1 Address Valid to Output Valid (Page Read) E = VIL,G= VIL 25 ns tAXQX Address Transition to Output Transition (Page Read) E=VIL,G= VIL 6ns tEHLX Chip Enable High to Latch Enable Transition 0 ns tEHQX Chip Enable High to Output Transition G= VIL 0ns tEHQZ Chip Enable High to Output Hi-Z G = VIL 10 ns tELLL Chip ENable Low to Latch Enable Low 10 ns tGHQX Output Enable High to Output Transition E=VIL 0ns tGHQZ Output Enable High to Output Hi-Z E=VIL 10 ns tGLQV Output Enable Low to Output Valid E = VIL 50 ns tGLQX Output Enable Low to Output Transition E=VIL 0ns tLHAX Latch Enable High to Address Transition E=VIL 10 ns tLHLL Lacth Enable High to Latch Enable Low 10 ns tLLLH Latch Enable Low to LatchEnable High E = VIL 10 ns tLLQV Latch Enable Low to Output Valid E=VIL,G= VIL 125 ns tLLQV1 Lacth Enable Low to Output Valid (Page Read) E=VIL,G= VIL 25 ns tLLQX Latch Enable Low to Output Transition E=VIL,G= VIL 0ns Figure 10. Asynchronous Read Latch Enable Controlled Read AC Waveforms (x16, x32 organisation) Asynchronous Read (M15 = 1), Latch Enable Controlled (M3 = 1) AI03251 L E G A1-A22 (1) DQ0-DQX (2) VALID tEHLX tLHLL tLHAX tAVLL tELLL tLLLH tEHQX tEHQZ tGHQX GHQZ tLLQV tLLQX tGLQX tGLQV See also Page Read (1) A1 is not used (Don’t Care) in x32 organization (2) DQ0-DQ15 in x16 or DQ0-DQ31 in x32 organization OUTPUT |
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