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M29F002BT 数据表(PDF) 15 Page - STMicroelectronics |
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M29F002BT 数据表(HTML) 15 Page - STMicroelectronics |
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15 / 22 page ![]() 15/22 M29F002BT, M29F002BB, M29F002BNT, M29F002BNB Table 14. Write AC Characteristics, Chip Enable Controlled (TA = 0 to 70°C, –40 to 85°C or –40 to 125°C) Symbol Alt Parameter M29F002B Unit 45 55 70 / 90 / 120 tAVAV tWC Address Valid to Next Address Valid Min 45 55 70 ns tWLEL tWS Write Enable Low to Chip Enable Low Min 0 0 0 ns tELEH tCP Chip Enable Low to Chip Enable High Min 40 40 45 ns tDVEH tDS Input Valid to Chip Enable High Min 25 25 30 ns tEHDX tDH Chip Enable High to Input Transition Min 0 0 0 ns tEHWH tWH Chip Enable High to Write Enable High Min 0 0 0 ns tEHEL tCPH Chip Enable High to Chip Enable Low Min 20 20 20 ns tAVEL tAS Address Valid to Chip Enable Low Min 0 0 0 ns tELAX tAH Chip Enable Low to Address Transition Min 40 40 45 ns tGHEL Output Enable High Chip Enable Low Min 0 0 0 ns tEHGL tOEH Chip Enable High to Output Enable Low Min 0 0 0 ns tVCHWL tVCS VCC High to Write Enable Low Min 50 50 50 µs Figure 11. Write AC Waveforms, Chip Enable Controlled AI02084 E G W A0-A17 DQ0-DQ7 VALID VALID VCC tVCHWL tEHWH tEHEL tWLEL tAVEL tEHGL tELAX tEHDX tAVAV tDVEH tELEH tGHEL |
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