元器件交易网http://www.77cn.com.cn
Timing Waveform of Pipelined Read-to-Write-to-Read
(OE = VIL)CLK
CE0
CE1
BEn
R/W
ADDRESS
DATAIN
DATAOUT
NOTES:
1. Output state (High, Low, or High-impedance) is determined by the previous cycle control signals.2. CE0, BEn, and ADS = VIL; CE1, CNTEN, and REPEAT = VIH. "NOP" is "No Operation".
3. 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 use only.
4. "NOP" is "No Operation." Data in memory at the selected address may be corrupted and should be re-written to guarantee data integrity.
(2)
CLKCE0
CE1
BEn
R/W
ADDRESS
DATAIN
DATAOUT
OE
NOTES:
1.Output state (High, Low, or High-impedance) is determined by the previous cycle control signals.2.CE0, BEn, and ADS = VIL; CE1, CNTEN, and REPEAT = VIH.
3.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 referenceuse only.
4.This timing does not meet requirements for fastest speed grade. This waveform indicates how logically it could be done if timing so allows.