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CAT22C10 View Datasheet(PDF) - ON Semiconductor

Part NameDescriptionManufacturer
CAT22C10 256-Bit Nonvolatile CMOS Static RAM ON-Semiconductor
ON Semiconductor ON-Semiconductor
CAT22C10 Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
CAT22C10
Write
With the chip enabled and the nonvolatile functions
inhibited, the Write Enable (WE) pin will select the write
mode when driven to a low level. In this mode, the
address must be supplied for the byte being written.
After the set-up time (tAS), the input data must be
supplied to pins I/O0I/O3. When these conditions, in-
cluding the write pulse width time (tWP) are met, the data
will be written to the specified location in the Static RAM.
A write function may also be initiated from the standby
mode by driving WE low, inhibiting the nonvolatile func-
tions, supplying valid addresses, and then taking CS low
and supplying input data.
Figure 2. Write Cycle Timing
ADDRESS
CS
tAS
WE
DATA IN
DATA OUT
tWC
tCW
tWP
tWR
tDW
tDH
DATA VALID
tWZ
tOW
HIGH-Z
Figure 3. Early Write Cycle Timing
ADDRESS
CS
tAS
WE
DATA IN
DATA OUT
tWC
tCW
tWP
tDW
DATA VALID
HIGH-Z
tWR
tDH
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice.
7
Doc No. MD-1082, Rev. R
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