X28HC256 Datasheet, PDF (12/15 Pages) Xicor Inc. – 5 Volt, Byte Alterable E2PROM

X28HC256
A.C. CHARACTERISTICS (Over the recommended operating conditions, unless otherwise specified.)
Read Cycle Limits
Symbol
t_RC(5)
t_CE(5)
t_AA(5)
t_OE
t_LZ(4)
t_OLZ(4)
t_HZ(4)
t_OHZ(4)
t_OH
Parameter
Read cycle time
Chip enable access time
Address access time
Output enable access time
CE LOW to active output
OE LOW to active output
CE HIGH to high Z output
OE HIGH to high Z output
Output hold from address change
X28HC256-70 X28HC256-90 X28HC256-12 X28HC256-15
Min. Max. Min. Max. Min. Max. Min. Max.
70
90
120
150
70
90
120
150
70
90
120
150
35
40
50
50
0
0
0
0
0
0
0
0
35
40
50
50
35
40
50
50
0
0
0
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Read Cycle
t_RC
Address
t_CE
CE
t_OE
OE
V_IH
WE
Data I/O
HIGH Z
t_OLZ
t_LZ
t_OH
Data Valid
t_HZ
Data Valid
t_OHZ
t_AA
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 when 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.
12
FN8108.1
May 17, 2006