X28HC256 Datasheet, PDF (12/24 Pages) Xicor Inc. – 5 Volt, Byte Alterable E2PROM

X28HC256
A.C. CHARACTERISTICS (Over the recommended operating conditions, unless otherwise specified.)
Read Cycle Limits
X28HC256-70 X28HC256-90 X28HC256-12 X28HC256-15
Symbol
Parameter
Min. Max. Min. Max. Min. Max. Min. Max. Units
tRC(5) Read Cycle Time
70
90
120
150
ns
t_CE(5) Chip Enable Access Time
70
90
120
150 ns
tAA(5) Address Access Time
70
90
120
150 ns
tOE Output Enable Access Time
35
40
50
50 ns
t_LZ ⁽⁴⁾ CE LOW to Active Output
0
0
0
0
ns
tOLZ ⁽⁴⁾ OE LOW to Active Output
0
0
0
0
ns
tHZ ⁽⁴⁾ CE HIGH to High Z Output
35
40
50
50 ns
t_OHZ ⁽⁴⁾ OE HIGH to High Z Output
35
40
50
50 ns
tOH Output Hold From Address Change 0
0
0
0
ns
3859 PGM T10.2
Read Cycle
ADDRESS
CE
OE
VIH
WE
DATA I/O
HIGH Z
tRC
tCE
tOE
tOLZ
tLZ
tOH
DATA VALID
tAA
tHZ
DATA VALID
tOHZ
3859 FHD F05
Notes: (4) t_LZ min., t_HZ, t_OLZ min. and t_OHZ are periodically sampled and not 100% tested, t_HZ and t_OHZ are measured, with CL = 5pF,
from the point whin CE, OE return HIGH (whichever occurs first) to the time when the outputs are no longer driven.
(5) For faster 256K products, refer to X28VC256 product line.
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