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CAT28C257HT13-12T データシート(PDF) 4 Page - Catalyst Semiconductor

部品番号 CAT28C257HT13-12T
部品情報  256K-Bit CMOS PARALLEL E2PROM
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メーカー  CATALYST [Catalyst Semiconductor]
ホームページ  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

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CAT28C257
4
Doc. No. 25073-00 2/98
Advanced
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
CAPACITANCE TA = 25°C, f = 1.0 MHz, VCC = 5V
Symbol
Test
Max.
Units
Conditions
CI/O(1)
Input/Output Capacitance
10
pF
VI/O = 0V
CIN(1)
Input Capacitance
6
pF
VIN = 0V
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.
28C257-90
28C257-12
28C257-15
Symbol
Parameter
Min.
Max.
Min.
Max
Min.
Max.
Units
tRC
Read Cycle Time
90
120
150
ns
tCE
CE Access Time
90
120
150
ns
tAA
Address Access Time
90
120
150
ns
tOE
OE Access Time
40
50
70
ns
tLZ(1)
CE Low to Active Output
0
0
0
ns
tOLZ(1)
OE Low to Active Output
0
0
0
ns
tHZ(1)(2)
CE High to High-Z Output
40
50
50
ns
tOHZ(1)(2)
OE High to High-Z Output
40
50
50
ns
tOH(1)
Output Hold from Address Change
0
0
0
ns
A.C. CHARACTERISTICS, Read Cycle
VCC=5V + 10%, Unless otherwise specified
Symbol
Parameter
Min.
Max.
Units
tPUR
Power-Up to Read
100
µs
tPUW
Power-Up to Write
5
10
ms
Power-Up Timing


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