MCM44256B View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
MCM44256B Datasheet PDF : 8 Pages
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WRITE CYCLE 1 (WE Controlled, See Notes 1 and 2)
–12
Parameter
Symbol
Min
Max
Address Setup Time
A0 Setup Time
Address Valid to End of Write
A0 Valid to End of Write
Write Pulse Width
tAVWL
5
—
tA0VWL
0
—
tAVWH
12
—
tA0VWH
10
—
tWLWH,
7
—
tWLEH
Data Valid to End of Write
tDVWH
6
—
Data Hold Time
tWHDX
0
—
Write Low to Data High–Z
tWLQZ
0
4
Write High to Output Active
tWHQX
3
—
Write Recovery Time
tWHAX
0
—
Write Recovery Time — A0
tWHA0X
0
—
NOTES:
1. A write occurs during the overlap of DCS or TCS low and WE low.
2. Enable timings are the same for both DCS and TCS.
3. Transition is measured 200 mV from steady–state voltage.
4. This parameter is sampled and not 100% tested.
–15
Min
Max
5
—
0
—
15
—
12
—
10
—
7
—
0
—
0
5
3
—
0
—
0
—
–17
Min
Max
5
—
0
—
17
—
14
—
12
—
8
—
0
—
0
6
3
—
0
—
0
—
Unit Notes
ns
ns
ns
ns
ns
ns
ns
ns
3, 4
ns
3, 4
ns
ns
A1 – A17
A0
DCS/TCS
(DATA/TAG ENABLE)
WE (WRITE ENABLE)
D (DATA IN)
Q (DATA OUT)
WRITE CYCLE 1
tAVWH
tA0VWH
tA0VWL
tAVWL
HIGH–Z
tWLQZ
tWLEH
tWLWH
tDVWH
DATA VALID
HIGH–Z
tWHAX
tWHA0X
tWHDX
tWHQX
MCM44256B SERIES
6
MOTOROLA FAST SRAM
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