CAT28C16A
DEVICE OPERATION
Read
Data stored in the CAT28C16A is transferred to the data
bus when WE is held high, and both OE and CE are held
Figure 3. Read Cycle
tRC
ADDRESS
tCE
CE
tOE
OE
VIH
WE
tLZ
tOLZ
DATA OUT
HIGH-Z
tOH
DATA VALID
tAA
28C16A F05
low. The data bus is set to a high impedance state when
either CE or OE goes high. This 2-line control architec-
ture can be used to eliminate bus contention in a system
environment.
tOHZ
tHZ
DATA VALID
Figure 4. Byte Write Cycle [WE Controlled]
tWC
ADDRESS
tAS
tCS
CE
tAH
tCH
OE
tOES
WE
tDL
DATA OUT
HIGH-Z
tWP
tOEH
DATA IN
DATA VALID
tDS
tDH
5089 FHD F06
Doc. No. 25033-00 2/98
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