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MB90F548GPF 数据表(PDF) 49 Page - Cypress Semiconductor |
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MB90F548GPF 数据表(HTML) 49 Page - Cypress Semiconductor |
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49 / 70 page ![]() Document Number: 002- 07696 Rev. *A Page 49 of 70 MB90540G/545G Series 11.4.5 Bus Timing (Read) (MB90543G(S)/547G(S)/548G(S)/F548GL(S): VCC 3.5 V to 5.5 V, V SS AV SS 0.0 V, T A 40 C to 105 C) (Other than MB90543G(S)/547G(S)/548G(S)/F548GL(S): VCC 5.0 V 10, V SS AV SS 0.0 V, T A 40 C to 105 C) Parameter Symbol Pin name Condition Value Units Remarks Min Max ALE pulse width tLHLL ALE tCP/2 20 ns Valid address ALE time tAVLL ALE, A16 to A23, AD00 to AD15 tCP/2 20 ns ALE Address valid time tLLAX ALE, AD00 to AD15 tCP/2 15 ns Valid address RD time tAVRL A16 toA23, AD00 to AD15, RD tCP 15 ns Valid address Valid data input tAVDV A16 to A23, AD00 to AD15 5 tCP/2 60 ns RD pulse width tRLRH RD 3 tCP/2 20 ns RD Valid data input tRLDV RD, AD00 to AD15 3 tCP/2 60 ns RD Data hold time tRHDX RD, AD00 to AD15 0 ns RD ALE time tRHLH RD, ALE tCP/2 15 ns RD Address valid time tRHAX RD, A16 to A23 tCP/2 10 ns Valid address CLK time tAVCH A16 to A23, AD00 to AD15, CLK tCP/2 20 ns RD CLK time tRLCH RD, CLK tCP/2 20 ns ALE RD time tLLRL ALE, RD tCP/2 15 ns |
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