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TDA7503 数据表(PDF) 18 Page - STMicroelectronics |
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TDA7503 数据表(HTML) 18 Page - STMicroelectronics |
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18 / 26 page ![]() EXTERNAL MEMORY INTERFACE (EMI) SRAM MODE Characteristics 40MHz Unit Min. Max. Address Valid and CS Assertion Pulse Width 89 -- ns Address Valid to RD or WR Assertion 23 -- ns RD or WR Assertion Pulse Width 45 -- ns RD or WR Negation to RD or WR Assertion 39 -- ns RD or WR Negation to Address not Valid 5 -- ns Address Valid to Input Data Valid -- 72 ns RD Assertion to Input Data Valid -- 35 ns RD Negation to Data Not Valid (Data Hold Time) 0 -- ns Address Valid to WR Negation 73 -- ns Data Setup Time to WR Negation 32 -- ns Data Hold Time from WR Negation 5 -- ns WR Assertion to Data Valid -- 18 ns WR Negation to Data High-Z (Note 1) -- 23 ns WR Assertion to Data Active 5 -- ns TDA7503 18/26 |
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