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CS9211 датащи(PDF) 56 Page - National Semiconductor (TI) |
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CS9211 датащи(HTML) 56 Page - National Semiconductor (TI) |
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56 / 62 page ![]() www.national.com 56 Revision 2.1 Electrical Specifications (Continued) Table 5-11. SDRAM Read Timing Symbol Parameter Min Max Units Comments (Note 1) t1 Clock Cycle Time 20 ns t2 CS# Setup Time 2 ns t3 CS#HoldTime 1 ns t4 RAS# Setup Time 2 ns t5 RAS# Hold Time 1 ns t6 CAS# Setup Time 2 ns t7 CAS# Hold Time 1 ns t8 WE# Setup Time 2 ns t9 WE#HoldTime 1 ns t10 Address (MA) Setup Time 2 ns t11 Address (MA) Hold Time 1 ns t12 DQM Setup Time 2 ns t13 DQM Hold Time 1 ns t14 Data-In Setup Time 0.1 2 ns t15 Data-InHoldTime 0.1 2 ns 1. All AC tests, unless otherwise specified, are at: VDD = 3.14 to 3.46 (3.3V nominal), TC =0 oCto 85oC, and C L =50pF. Table 5-12. SDRAM Write Timing Symbol Parameter Min Max Units Comments (Note 1) t1 Clock Cycle Time 20 ns t2 CS# Setup Time 2 ns t3 CS#HoldTime 1 ns t4 RAS# Setup Time 2 ns t5 RAS# Hold Time 1 ns t6 CAS# Setup Time 2 ns t7 CAS# Hold Time 1 ns t8 WE# Setup Time 2 ns t9 WE#HoldTime 1 ns t10 Address (MA) Setup Time 2 ns t11 Address (MA) Hold Time 1 ns t12 DQM Setup Time 2 ns t13 DQM Hold Time 1 ns t14 Data-Out Setup Time 2 ns t15 Data-Out Hold Time 1 ns 1. All AC tests, unless otherwise specified, are at: VDD = 3.14 to 3.46 (3.3V nominal), TC =0 oCto 85oC, and C L =50 pF. |
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