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CAT28C257N-15T Folha de dados(PDF) 4 Page - Catalyst Semiconductor

Nome de Peças CAT28C257N-15T
Descrição Electrónicos  256K-Bit CMOS PARALLEL EEPROM
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CAT28C257
4
Doc. No. 1015, Rev. D
CAPACITANCE TA = 25°C, f = 1.0 MHz, VCC = 5V
Symbol
Test
Conditions
Min
Typ
Max
Units
CI/O(1)
Input/Output Capacitance
VI/O = 0V
10
pF
CIN(1)
Input Capacitance
VIN = 0V
6
pF
MODE SELECTION
Mode
CE
WE
OE
I/O
Power
Read
L
H
L
DOUT
ACTIVE
Byte Write (WE Controlled)
L
H
DIN
ACTIVE
Byte Write (CE Controlled)
L
H
DIN
ACTIVE
Standby, and Write Inhibit
H
X
X
High-Z
STANDBY
Read and Write Inhibit
X
H
H
High-Z
ACTIVE
Note:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
(2) Output floating (High-Z) is defined as the state when the external data line is no longer driven by the output buffer.
28C257-12
28C257-15
Symbol
Parameter
Min
Typ
Max
Min
Typ
Max
Units
tRC
Read Cycle Time
120
150
ns
tCE
CE Access Time
120
150
ns
tAA
Address Access Time
120
150
ns
tOE
OE Access Time
50
70
ns
tLZ(1)
CE Low to Active Output
0
0
ns
tOLZ(1)
OE Low to Active Output
0
0
ns
tHZ(1)(2)
CE High to High-Z Output
50
50
ns
tOHZ(1)(2)
OE High to High-Z Output
50
50
ns
tOH(1)
Output Hold from Address Change
0
0
ns
A.C. CHARACTERISTICS, Read Cycle
VCC=5V + 10%, Unless otherwise specified
Symbol
Parameter
Min
Typ
Max
Units
tPUR
Power-Up to Read
100
µs
tPUW
Power-Up to Write
5
10
ms
Power-Up Timing


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