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CAT28LV256GA-25T датащи(PDF) 5 Page - Catalyst Semiconductor

номер детали CAT28LV256GA-25T
подробное описание детали  256K-Bit CMOS PARALLEL E2PROM
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производитель  CATALYST [Catalyst Semiconductor]
домашняя страница  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

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CAT28LV256
5
Doc. No. 1071, Rev. B
A.C. CHARACTERISTICS, Write Cycle
VCC = 3.0V to 3.6V, unless otherwise specified
28LV256-20
28LV256-25
28LV256-30
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Max. Units
tWC
Write Cycle Time
10
10
10
ms
tAS
Address Setup Time
0
0
0
ns
tAH
Address Hold Time
100
100
100
ns
tCS
CE Setup Time
0
0
0
ns
tCH
CE Hold Time
0
0
0
ns
tCW(3)
CE Pulse Time
150
150
150
ns
tOES
OE Setup Time
0
0
0
ns
tOEH
OE Hold Time
0
0
0
ns
tWP(3)
WE Pulse Width
150
150
150
ns
tDS
Data Setup Time
50
50
50
ns
tDH
Data Hold Time
0
0
0
ns
tINIT(1)
Write Inhibit Period After Power-up
5
10
5
10
5
10
ms
tBLC(1)(4)
Byte Load Cycle Time
0.15
100
0.15
100
0.15
100
µs
Vcc
1.8K
CL = 100 pF
CL INCLUDES JIG CAPACITANCE
1.3K
DEVICE
UNDER
TEST
OUTPUT
INPUT PULSE LEVELS
REFERENCE POINTS
2.0 V
0.6 V
VCC - 0.3V
0.0 V
Figure 1. A.C. Testing Input/Output Waveform(2)
28LV256 F04
Note:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
(2) Input rise and fall times (10% and 90%) < 10 ns.
(3) A write pulse of less than 20ns duration will not initiate a write cycle.
(4) A timer of duration tBLC max. begins with every LOW to HIGH transition of WE. If allowed to time out, a page or byte write will begin;
however a transition from HIGH to LOW within tBLC max. stops the timer.
Figure 2. A.C. Testing Load Circuit (example)
28LV256 F05


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