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CY7C09279V-7AXC bảng dữ liệu(HTML) 13 Page - Cypress Semiconductor |
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13 / 22 page  CY7C09269V/79V/89V CY7C09369V/89V Document Number: 38-06056 Rev. *I Page 13 of 22 Figure 11. Flow Through Read-to-Write-to-Read (OE = VIL) [35, 36, 37, 38] Figure 12. Flow Through Read-to-Write-to-Read (OE Controlled) [35, 36, 37, 38, 39] Switching Waveforms (continued) tCH1 tCL1 tCYC1 tSC tHC tSW tHW tSA tHA tSW tHW tSD tHD An An+1 An+2 An+2 An+3 An+4 Dn+2 Qn Qn+1 Qn+3 tCD1 tCD1 tDC tCKHZ tCD1 tCD1 tCKLZ tDC READ NO OPERATION WRITE READ CLK CE0 CE1 ADDRESS R/W DATAIN DATAOUT Qn tCH1 tCL1 tCYC1 tSC tHC tSW tHW tSA tHA tCD1 tDC tOHZ READ An An+1 An+2 An+3 An+4 An+5 Dn+2 Dn+3 tSW tHW tSD tHD tCD1 tCD1 tCKLZ tDC Qn+4 tOE WRITE READ CLK CE0 CE1 ADDRESS R/W DATAIN DATAOUT OE Notes 35. ADS = VIL, CNTEN and CNTRST = VIH. 36. Addresses do not have to be accessed sequentially since ADS = VIL constantly loads the address on the rising edge of the CLK. Numbers are for reference only. 37. CE0 and ADS = VIL; CE1, CNTEN, and CNTRST = VIH. 38. During “No Operation”, data in memory at the selected address may be corrupted and must be rewritten to ensure data integrity. 39. Output state (High, LOW, or high impedance) is determined by the previous cycle control signals. |
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