CAT28C16AK-20 ON Semiconductor, CAT28C16AK-20 Datasheet - Page 6

• Manufacturer Part Number: CAT28C16AK-20
• Manufacturer: ON Semiconductor

Specifications of CAT28C16AK-20

• Density: 16Kb
• Interface Type: Parallel
• Organization: 2Kx8
• Access Time (max): 200ns
• Write Protection: Yes
• Data Retention: 100Year
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC EIAJ
• Operating Temp Range: 0C to 70C
• Supply Current: 35mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 24
• Lead Free Status / Rohs Status: Not Compliant

DATA Polling
byte write cycle. Once a byte write cycle is initiated,
attempting to read the last byte written will output the
Hardware Data Protection
that are incorporated into the CAT28C16A.
DATA OUT
ADDRESS
ADDRESS
DATA IN
DATA polling is provided to indicate the completion of a
The following is a list of hardware data protection features
1. V
2. A power on delay mechanism, t
WE
OE
CE
I/O 7
WE
falls below 3.0 V min.
characteristics), provides a 5 to 20 ms delay before
OE
CE
CC
sense provides for write protection when V
t
CS
t
AS
D
IN
t
OES
= X
Figure 6. Byte Write Cycle [CE Controlled]
INIT
t
AH
(see AC
t
t
CW
OEH
Figure 7. DATA Polling
http://onsemi.com
t
DS
DATA VALID
HIGH−Z
CC
D
OUT
6
t
t
OEH
OE
t
t
WC
CH
complement of that data on I/O
indeterminate) until the programming cycle is complete.
Upon completion of the self−timed byte write cycle, all I/O’s
will output true data during a read cycle.
= X
3. Write inhibit is activated by holding any one of
4. Noise pulses of less than 20 ns on the WE or CE
a write sequence, after V
min.
OE low, CE high or WE high.
inputs will not result in a write cycle.
t
DL
t
DH
t
D
WC
OUT
= X
CC
has reached 3.0 V
t
OES
7
(I/O
0
–I/O
6
are