X28HC256_07 Datasheet, PDF (12/20 Pages) Intersil Corporation – 5V, Byte Alterable EEPROM

X28HC256
AC Electrical Specifications
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
Read Cycle
Over Recommended Operating Conditions, Unless Otherwise Specified.
X28HC256-70 X28HC256-90 X28HC256-12
SYMBOL MIN MAX MIN MAX MIN MAX
t_RC (Note 5) 70
90
120
t_CE (Note 5)
70
90
120
t_AA (Note 5)
70
90
120
t_OE
35
40
50
t_LZ (Note 4)
0
0
0
t_OLZ (Note 4)
0
0
0
t_HZ (Note 4)
35
40
50
t_OHZ (Note 4)
35
40
50
t_OH
0
0
0
X28HC256-15
MIN MAX
150
150
150
50
0
0
50
50
0
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
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 C_L = 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
FN8108.2
May 7, 2007