MCM6264CJ35R2 データシートの表示（PDF） - Motorola => Freescale
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MCM6264CJ35R2 Datasheet PDF : 8 Pages
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AC OPERATING CONDITIONS AND CHARACTERISTICS
(VCC = 5.0 V ± 10%, TA = 0 to + 70°C, Unless Otherwise Noted)
Input Timing Measurement Reference Level . . . . . . . . . . . . . . . 1.5 V
Input Pulse Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 3.0 V
Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ns
Output Timing Measurement Reference Level . . . . . . . . . . . . . 1.5 V
Output Load . . . . . . . . . . . . See Figure 1A Unless Otherwise Noted
READ CYCLE (See Notes 1 and 2)
– 12
– 15
– 20
– 25
– 35
Parameter
Symbol Min Max Min Max Min Max Min Max Min Max Unit Notes
Read Cycle Time
tAVAV 12 — 15 — 20 — 25 — 35 — ns
3
Address Access Time
tAVQV — 12 — 15 — 20 — 25 — 35 ns
Enable Access Time
tELQV — 12 — 15 — 20 — 25 — 35 ns
4
Output Enable Access Time
tGLQV —
6
—
8
— 10 — 11 — 12 ns
Output Hold from Address Change
tAXQX 4
—
4
—
4
—
4
—
4
— ns
Enable Low to Output Active
tELQX
4
—
4
—
4
—
4
—
4
— ns 5, 6 ,7
Enable High to Output High–Z
tEHQZ 0
6
0
8
0
9
0 10 0 11 ns 5, 6, 7
Output Enable Low to Output Active
tGLQX 0
—
0
—
0
—
0
—
0
— ns 5, 6, 7
Output Enable High to Output High–Z tGHQZ 0
6
0
7
0
8
0
9
0 10 ns 5, 6, 7
Power Up Time
tELICCH 0
—
0
—
0
—
0
—
0
— ns
Power Down Time
tEHICCL — 12 — 15 — 20 — 25 — 35 ns
NOTES:
1. W is high for read cycle.
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. Addresses valid prior to or coincident with E going low.
5. At any given voltage and temperature, tEHQZ (max) is less than tELQX (min), and tGHQZ (max) is less than tGLQX (min), both for a given
device and from device to device.
6. Transition is measured ± 500 mV from steady–state voltage with load of Figure 1B.
7. This parameter is sampled and not 100% tested.
8. Device is continuously selected (E1 = VIL, E2 = VIH, G = VIL).
OUTPUT
AC TEST LOADS
Z0 = 50 Ω
50 Ω
VL = 1.5 V
OUTPUT
255 Ω
+5V
480 Ω
5 pF
Figure 1A
Figure 1B
TIMING LIMITS
The table of timing values shows either
a minimum or a maximum limit for each pa-
rameter. Input requirements are specified
from the external system point of view.
Thus, address setup time is shown as a
minimum since the system must supply at
least that much time (even though most
devices do not require it). On the other
hand, responses from the memory are
specified from the device point of view.
Thus, the access time is shown as a maxi-
mum since the device never provides data
later than that time.
MOTOROLA FAST SRAM
MCM6264C
3
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