MCM6708A データシートの表示（PDF） - Motorola => Freescale
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MCM6708A Datasheet PDF : 8 Pages
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WRITE CYCLE 2 (E Controlled, See Notes 1 and 2)
MCM6708A–8 MCM6708A–10 MCM6708A–12
Parameter
Symbol Min
Max
Min
Max
Min
Max Unit Notes
Write Cycle Time
tAVAV
8
—
10
—
12
—
ns
3
Address Setup Time
tAVEL
0
—
0
—
0
—
ns
Address Valid to End of Write
tAVEH
8
—
9
—
10
—
ns
Chip Enable to End of Write
tELEH,
7
—
8
—
9
—
ns 4, 5
tELWH
Data Valid to End of Write
tDVEH
4
—
5
—
6
—
ns
Data Hold Time
tEHDX
0
—
0
—
0
—
ns
Write Recovery Time
tEHAX
0
—
0
—
0
—
ns
NOTES:
1. A write occurs during the overlap of E low and W low.
2. Product sensitivities to noise require proper grounding and decoupling of power supplies as well as minimization or elimination of bus
contention conditions during read and write cycles.
3. All write cycle timing is referenced from the last valid address to the first transitioning address.
4. If E goes low coincident with or after W goes low, the output will remain in a high impedance condition.
5. If E goes high coincident with or before W goes high, the output will remain in a high impedance condition.
A (ADDRESS)
E (CHIP ENABLE)
W (WRITE ENABLE)
D (DATA IN)
Q (DATA OUT)
WRITE CYCLE 2
tAVAV
tAVEH
tELEH
tAVEL
tELWH
tDVEH
DATA VALID
HIGH–Z
tEHAX
tEHDX
MCM6708A
2–6
MOTOROLA FAST SRAM
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