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M58LR128HT 数据表(PDF) 68 Page - STMicroelectronics |
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M58LR128HT 数据表(HTML) 68 Page - STMicroelectronics |
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68 / 112 page  DC and AC parameters M58LR128HT, M58LR128HB 68/112 Table 25. Write AC characteristics, Write Enable controlled(1) 1. Sampled only, not 100% tested. Symbol Alt Parameter M58LR128HT/B Unit 85 tAVAV tWC Address Valid to Next Address Valid Min 85 ns tAVLH Address Valid to Latch Enable High Min 7 ns tAVWH (2) Address Valid to Write Enable High Min 45 ns tDVWH tDS Data Valid to Write Enable High Min 45 ns tELLH Chip Enable Low to Latch Enable High Min 10 ns tELWL tCS Chip Enable Low to Write Enable Low Min 0 ns tELQV Chip Enable Low to Output Valid Min 85 ns tELKV Chip Enable Low to Clock Valid Min 7 ns tGHWL Output Enable High to Write Enable Low Min 17 ns tLHAX Latch Enable High to Address Transition Min 7 ns tLLLH Latch Enable Pulse Width Min 7 ns tWHAV (2) 2. Meaningful only if L is always kept low. Write Enable High to Address Valid Min 0 ns tWHAX (2) tAH Write Enable High to Address Transition Min 0 ns tWHDX tDH Write Enable High to Input Transition Min 0 ns tWHEH tCH Write Enable High to Chip Enable High Min 0 ns tWHEL (3) 3. tWHEL and tWHLLhave this value when reading in the targeted bank or when reading following a Set Configuration Register command. System designers should take this into account and may insert a software No-Op instruction to delay the first read in the same bank after issuing any command and to delay the first read to any address after issuing a Set Configuration Register command. If the first read after the command is a Read Array operation in a different bank and no changes to the Configuration Register have been issued, tWHEL and tWHLL is 20ns. Write Enable High to Chip Enable Low Min 20 ns tWHGL Write Enable High to Output Enable Low Min 0 ns tWHLL (3) Write Enable High to Latch Enable Low Min 20 ns tWHWL tWPH Write Enable High to Write Enable Low Min 20 ns tWLWH tWP Write Enable Low to Write Enable High Min 45 ns tQVVPL Output (Status Register) Valid to VPP Low Min 0 ns tQVWPL Output (Status Register) Valid to Write Protect Low Min 0 ns tVPHWH tVPS VPP High to Write Enable High Min 200 ns tWHVPL Write Enable High to VPP Low Min 200 ns tWHWPL Write Enable High to Write Protect Low Min 200 ns tWPHWH Write Protect High to Write Enable High Min 200 ns |
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