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M58LT256JST Datasheet(PDF) 64 Page - STMicroelectronics |
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M58LT256JST Datasheet(HTML) 64 Page - STMicroelectronics |
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64 / 106 page  DC and ac parameters M58LT256JST, M58LT256JSB 64/106 Table 24. Write ac characteristics, Write Enable controlled(1) 1. Sampled only, not 100% tested. Symbol Alt Parameter M58LT256JST/B Unit 85 tAVAV tWC Address Valid to Next Address Valid Min 85 ns tAVLH Address Valid to Latch Enable High Min 10 ns tAVWH (3) Address Valid to Write Enable High Min 50 ns tDVWH tDS Data Valid to Write Enable High Min 50 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 9 ns tGHWL Output Enable High to Write Enable Low Min 17 ns tLHAX Latch Enable High to Address Transition Min 9 ns tLLLH Latch Enable Pulse Width Min 10 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 tWHLL have 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 are 0 ns. Write Enable High to Chip Enable Low Min 25 ns tWHGL Write Enable High to Output Enable Low Min 0 ns tWHLL (3) Write Enable High to Latch Enable Low Min 25 ns tWHWL tWPH Write Enable High to Write Enable Low Min 25 ns tWLWH tWP Write Enable Low to Write Enable High Min 50 ns tQVVPL Output (Status Register) Valid to VPP 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 |
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