
MCM6264C
6
MOTOROLA FAST SRAM
WRITE CYCLE 2
(E Controlled, See Notes 1 and 2)
– 12
– 15
– 20
– 25
– 35
Parameter
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Unit
Notes
Write Cycle Time
tAVAV
tAVEL
tAVEH
tELEH,
tELWH
12
—
15
—
20
—
25
—
35
—
ns
3
Address Setup Time
0
—
0
—
0
—
0
—
0
—
ns
Address Valid to End of Write
12
—
12
—
15
—
20
—
25
—
ns
Enable to End of Write
10
—
10
—
12
—
15
—
25
—
ns
4, 5
Write Pulse Width
tWLEH
tDVEH
tEHDX
tEHAX
10
—
12
—
15
—
17
—
20
—
ns
Data Valid to End of Write
7
—
7
—
8
—
10
—
15
—
ns
Data Hold Time
0
—
0
—
0
—
0
—
0
—
ns
Write Recovery Time
0
—
0
—
0
—
0
—
0
—
ns
NOTES:
1. A write occurs during the overlap of E low and W low.
2. E1 and E2 are represented by E in this data sheet. E2 is of opposite polarity to E.
3. All timings are 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 state.
5. If E goes high coincident with or before W goes high, the output will remain in a high impedance state.
WRITE CYCLE 2
(E Controlled, See Notes 1 and 2)
tEHDX
tDVEH
tEHAX
tELEH
tELWH
tWLEH
tAVEL
tAVEH
DATA VALID
tAVAV
HIGH–Z
A (ADDRESS)
W (WRITE ENABLE)
E (CHIP ENABLE)
Q (DATA OUT)
D (DATA IN)
ORDERING INFORMATION
(Order by Full Part Number)
Motorola Memory Prefix
Part Number
Package (P = 300 mil Plastic, J = 300 mil SOJ)
Full Part Numbers — MCM6264CP12
MCM6264CJ12
MCM6264CJ15
MCM6264CJ20
MCM6264CJ25
MCM6264CJ35
MCM6264CJ12R2
MCM6264CJ15R2
MCM6264CJ20R2
MCM6264CJ25R2
MCM6264CJ35R2
MCM6264CP15
MCM6264CP20
MCM6264CP25
MCM6264CP35
Shipping Method (R2 = Tape and Reel, Blank = Rails)
Speed (12 = 12 ns, 15 = 15 ns, 20 = 20 ns,
25 = 25 ns, 35 = 35 ns)
MCM
6264C
X
XX
XX