CAT28C16AK-20 ON Semiconductor, CAT28C16AK-20 Datasheet - Page 5

• 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

Read
data bus is set to a high impedance state when either CE or OE goes high. This 2−line control architecture can be used to
eliminate bus contention in a system environment.
Byte Write
and OE is high. Write cycles can be initiated using either WE
or CE, with the address input being latched on the falling
DATA OUT
ADDRESS
Data stored in the CAT28C16A is transferred to the data bus when WE is held high, and both OE and CE are held low. The
A write cycle is executed when both CE and WE are low,
DATA IN
WE
OE
CE
DATA OUT
ADDRESS
WE
OE
CE
V
t
AS
IH
t
OES
HIGH−Z
Figure 5. Byte Write Cycle [WE Controlled]
t
CS
t
t
AH
LZ
t
RC
DEVICE OPERATION
t
CE
t
Figure 4. Read Cycle
OLZ
t
WP
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t
t
OE
DATA VALID
DS
HIGH−Z
5
DATA VALID
edge of WE or CE, whichever occurs last. Data, conversely,
is latched on the rising edge of WE or CE, whichever occurs
first. Once initiated, a byte write cycle automatically erases
the addressed byte and the new data is written within 10 ms.
t
OH
t
t
DH
CH
t
OEH
t
DL
t
AA
t
WC
DATA VALID
t
t
OHZ
HZ