CAT28C16A Datasheet, PDF (6/8 Pages) Catalyst Semiconductor – 16K-Bit CMOS PARALLEL E2PROM

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
ADDRESS
CE
OE
WE
DATA OUT
tRC
tCE
tOE
VIH
tLZ
HIGH-Z
tOLZ
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.
tOH
DATA VALID
tAA
tOHZ
tHZ
DATA VALID
28C16A F05
Figure 4. Byte Write Cycle [WE Controlled]
ADDRESS
CE
tAS
tAH
tCS
tWC
tCH
OE
WE
DATA OUT
DATA IN
tOES
tWP
HIGH-Z
tOEH
tDL
DATA VALID
tDS
tDH
5089 FHD F06
Doc. No. 25033-00 2/98
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