Document #: 38-05473 Rev. *E Page 5 of 13
AC Switching Characteristics Over the Operating Range
[8]
Parameter Description
–10 (Industrial) –12 (Automotive)
Unit
Min Max Min Max
Read Cycle
t
power
[9]
V
CC
(Typical) to the First Access 100 100 μs
t
RC
Read Cycle Time 10 12 ns
t
AA
Address to Data Valid 10 12 ns
t
OHA
Data Hold from Address Change 3 3 ns
t
ACE
CE LOW to Data Valid 10 12 ns
t
DOE
OE LOW to Data Valid 5 6ns
t
LZOE
OE LOW to Low-Z 0 0 ns
t
HZOE
OE HIGH to High-Z
[10, 11]
5 6ns
t
LZCE
CE LOW to Low-Z
[11]
3 3 ns
t
HZCE
CE HIGH to High-Z
[10, 11]
5 6ns
t
PU
CE LOW to Power Up 0 0 ns
t
PD
CE HIGH to Power Down 10 12 ns
t
DBE
Byte Enable to Data Valid 5 6ns
t
LZBE
Byte Enable to Low-Z 0 0 ns
t
HZBE
Byte Disable to High-Z 6 6ns
Write Cycle
[12, 13]
t
WC
Write Cycle Time 10 12 ns
t
SCE
CE LOW to Write End 7 8 ns
t
AW
Address Setup to Write End 7 8 ns
t
HA
Address Hold from Write End 0 0 ns
t
SA
Address Setup to Write Start 0 0 ns
t
PWE
WE Pulse Width 7 8 ns
t
SD
Data Setup to Write End 5 6 ns
t
HD
Data Hold from Write End 0 0 ns
t
LZWE
WE HIGH to Low-Z
[11]
3 3 ns
t
HZWE
WE LOW to High-Z
[10, 11]
5 6ns
t
BW
Byte Enable to End of Write 7 8 ns
Notes
8. Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified I
OL
/I
OH
and 30-pF load capacitance.
9. t
POWER
gives the minimum amount of time that the power supply should be at typical V
CC
values until the first memory access is performed.
10.t
HZOE
, t
HZCE
, t
HZBE,
and t
HZWE
are specified with a load capacitance of 5 pF as in part (c) of AC Test Loads and Waveforms. Transition is measured when the outputs enter
a high impedance state.
11.At any given temperature and voltage condition, t
HZCE
is less than t
LZCE
, t
HZOE
is less than t
LZOE
, t
HZBE
is less than t
LZBE
, and t
HZWE
is less than t
LZWE
for any given
device.
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