时序控制

a. 写操作时序

Item Symbol Limit(Min.) Limit(Max.) Unit Enable Cycle Time tcyce 666 - nS Enable Pules Width PWEH 300 - nS Enable Rise/Fall Time TEr,tEf - 25 nS Address Set-Up Time tAS 100 - nS Address Hold Time tAH 10 - nS Data Set-Up Time tDSW 100 - nS Data Hold Time tH 10 - nS

b.读操作时序

Item Symbol Limit(Min.) Limit(Max.) Unit Enable Cycle Time tcyce 666 - nS Enable Pules Width PWEH 300 - nS Enable Rise/Fall Time TEr,tEf - 25 nS Address Set-Up Time tAS 100 - nS Address Hold Time tAH 10 - nS Data Set-Up Time tDDR 10 - nS Data Hold Time TDHR 20 - nS