CYDC256B16, CYDC128B16,CYDC064B16, CYDC128B08,CYDC064B08
Document #: 001-01638 Rev. *E Page 16 of 26
Interrupt Timing[33]
tINS INT Set Time 35 45 ns
tINR INT Reset Time 35 45 ns
Semaphore Timing
tSOP SEM Flag Update Pulse (OE or SEM)10 15 ns
tSWRD SEM Flag Write to Read Time 10 10 ns
tSPS SEM Flag Contention Window 10 10 ns
tSAA SEM Address Access Time 40 55 ns
Switching Characteristics for VCC = 3.0V Over the Operating Range
Parameter Description
CYDC256B16,
CYDC128B16,
CYDC064B16,
CYDC128B08,
CYDC064B08
CYDC256B16,
CYDC128B16,
CYDC064B16,
CYDC128B08,
CYDC064B08 Unit
-40 -55
Min. Max. Min. Max.
Read Cycle
tRC Read Cycle Time 40 55 ns
tAA Address to Data Valid 40 55 ns
tOHA Output Hold From Address Change 5 5 ns
tACE[28] CE LOW to Data Valid 40 55 ns
tDOE OE LOW to Data Valid 25 30 ns
tLZOE[29, 30, 31] OE Low to Low Z 1 1 ns
tHZOE[29, 30, 31] OE HIGH to High Z 15 15 ns
tLZCE[29, 30, 31] CE LOW to Low Z 1 1 ns
tHZCE[29, 30, 31] CE HIGH to High Z 15 15 ns
tPU[31] CE LOW to Power-Up 0 0 ns
tPD[31] CE HIGH to Power-Down 40 55 ns
tABE[28] Byte Enable Access Time 40 55 ns
Write Cycle
tWC Write Cycle Time 40 55 ns
tSCE[28] CE LOW to Write End 30 45 ns
tAW Address Valid to Write End 30 45 ns
tHA Address Hold From Write End 0 0 ns
tSA[28] Address Set-up to Write Start 0 0 ns
tPWE Write Pulse Width 25 40 ns
tSD Data Set-up to Write End 20 30 ns
tHD Data Hold From Write End 0 0 ns
Switching Characteristics for VCC = 2.5V Over the Operating Range (continued)
Parameter Description
CYDC256B16,
CYDC128B16,
CYDC064B16,
CYDC128B08,
CYDC064B08
CYDC256B16,
CYDC128B16,
CYDC064B16,
CYDC128B08,
CYDC064B08
Unit
-40 -55
Min. Max. Min. Max.
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