CAT22C10LI20 ON Semiconductor, CAT22C10LI20 Datasheet - Page 7

• Manufacturer Part Number: CAT22C10LI20
• Manufacturer: ON Semiconductor
• Type: NVSRAMr

Specifications of CAT22C10LI20

• Word Size: 4b
• Organization: 64x4
• Density: 256b
• Interface Type: Parallel
• Access Time (max): 200ns
• Operating Supply Voltage (typ): 5V
• Package Type: PDIP
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: 0C to 70C
• Pin Count: 18
• Mounting: Through Hole
• Supply Current: 40mA
• Lead Free Status / Rohs Status: Compliant

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Characteristics subject to change without notice.
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 (t
supplied to pins I/O
Figure 2. Write Cycle Timing
Figure 3. Early Write Cycle Timing
ADDRESS
DATA OUT
ADDRESS
DATA OUT
DATA IN
DATA IN
WE
CS
WE
CS
0
–I/O
AS
3
. When these conditions, in-
), the input data must be
t AS
t AS
t WZ
7
t CW
HIGH-Z
cluding the write pulse width time (t
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.
t WC
t WP
t WC
t WP
t CW
t DW
t DW
DATA VALID
DATA VALID
HIGH-Z
t DH
t OW
t WR
t DH
t WR
WP
) are met, the data
Doc No. MD-1082, Rev. R
CAT22C10