6.42
IDT70P264/254/244L Datasheet
Low Power 1.8V 16K/8K/4K x 16 Dual-Port Static RAM Industrial Temperature Range
8
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage Range
(2)
NOTES:
1. This parameter is guaranteed by device characterization, but is not production tested.
2. The specification for t
DH must be met by the device supplying write data to the SRAM under all operating conditions. Although tDH and tOW values will vary over
voltage and temperature, the actual t
DH will always be smaller than the actual tOW.
3. At any given temperature and voltage condition, t
HZ is less than tLZ for any given device.
Symbol
70P264/254/244
Ind'l Only
UnitParameter
40ns 55ns
Min. Max. Min. Max.
READ CYCLE
t
RC
Read Cycle Time 40
____
55
____
ns
t
AA
Address Access Time
____
40
____
55 ns
t
ACE
Chip Enable Access Time
____
40
____
55 ns
t
ABE
Byte Enable Access Time
____
40
____
55 ns
t
AOE
Output Enable Access Time
____
25
____
30 ns
t
OH
Output Hold from Address Change 5
____
5
____
ns
t
LZ
Output Low-Z Time
(1,3)
5
____
5
____
ns
t
HZ
Output High-Z Time
(1,3)
____
10
____
25 ns
t
PU
Chip Enable to Power Up Time
(1)
0
____
0
____
ns
t
PD
Chip Disable to Power Down Time
(1)
____
40
____
55 ns
7148 tbl 11
