LH52258AK-20 查看數據表（PDF） - Sharp Electronics
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LH52258AK-20 Datasheet PDF : 9 Pages
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CMOS 32K × 8 Static RAM
LH52258A
AC ELECTRICAL CHARACTERISTICS 1 (Over Operating Range)
SYMBOL
DESCRIPTION
–20
MIN MAX
–25
MIN MAX
UNITS
READ CYCLE
tRC
Read Cycle Time
tAA
Address Access Time
tOH
Output Hold from Address Change
tEA
E Low to Valid Data
tELZ
E Low to Output Active 2,3
tEHZ
E High to Output High-Z 2,3
tGA
G Low to Valid Data
tGLZ
G Low to Output Active 2,3
tGHZ
G High to Output High-Z 2,3
tPU
E Low to Power Up Time 3
tPD
E High to Power Down Time 3
20
25
ns
20
25 ns
4
4
ns
20
25 ns
4
4
ns
0
10
0
12 ns
10
12 ns
0
0
ns
0
9
0
10
ns
0
0
ns
25
30 ns
WRITE CYCLE
tWC
Write Cycle Time
20
25
ns
tEW
E Low to End of Write
15
20
ns
tAW
Address Valid to End of Write
15
20
ns
tAS
Address Setup
0
0
ns
tAH
Address Hold from End of Write
0
0
ns
tWP
W Pulse Width
12
15
ns
tDW
Input Data Setup Time
10
12
ns
tDH
Input Data Hold Time
tWHZ
W Low to Output High-Z 2,3
tWLZ
W High to Output Active 2,3
0
0
ns
8
10 ns
0
0
ns
NOTES:
1. AC Electrical Characteristics specified at ‘AC Test Conditions’ levels.
2. Active output to High-Z and High-Z to output active tests specified for a ±500 mV transition from steady state levels into the test load. The test
load has 5 pF capacitances.
3. Guaranteed by design but not tested.
5
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