M69AW024BE Ver la hoja de datos (PDF) - STMicroelectronics
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M69AW024BE Datasheet PDF : 25 Pages
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M69AW024BE
Table 7. Read and Standby Modes AC Characteristics
M69AW024BE
Symbol
Alt.
Parameter
–60
Unit
Min Max
tAVAX, tELEH
(1,2)
tRC
Read Cycle Time
70 1000 ns
tELQV(3)
tCE
Chip Enable Access Time
60 ns
tGLQV(3)
tOE
Output Enable Access Time
40 ns
tAVQV(3,5)
tAA
Address Access Time
60 ns
tBLQV(3)
tBA
LB, UB Low to Output Valid
30 ns
tAXQX, tGHQX,
tBHQX, tEHQX
tOH
Output Hold Time after Chip Enable Low
(8)
5
ns
tELQX(4,8)
tCLZ Chip Enable Low to Output Low-Z
5
ns
tGLQX(4,8)
tOLZ Output Enable Low to Output Low-Z
0
ns
tBLQX(4,8)
tBLZ LB, UB Low to Output Low-Z
0
ns
tEHQZ(8)
tCHZ Chip Enable High to Output Hi-Z
20 ns
tGHQZ(8)
tOHZ Output Enable High to Output Hi-Z
20 ns
tBHQZ(8)
tBHZ LB, UB High to Output Hi-Z
20 ns
tAVEL
tASC Address Set-up Time to Chip Enable Low
–5
ns
tAVGL
tASO Address Valid to Output Enable Low
10
ns
tAXAV(5)
tAX
Address Invalid Time
10 ns
tEHAX(6)
tCHAH Chip Enable High to Address Hold Time
–5
ns
tGHAX
tOHAH Output Enable High to Address Hold Time
–5
ns
tWHGL(7)
tWHOL Write Enable High to Output Enable Low (Read Operations)
10 1000 ns
tEHEL
tCP
Chip Enable High Pulse Width
10
ns
Note: 1. The maximum value of this timing is applicable if E1 is kept Low with addresses unchanged.If needed by the system operation,
please contact your local ST representative for relaxation of the 1000ns limitation.
2. Addresses should not be changed during tAVAX(min).
3. These parameters are measured according to the conditions on input and output timing reference voltage shown on Figure 6., AC
Measurement I/O Waveform.
4. The output load capacitance is 5pF without any other load.
5. These timings are given for E1 Low.
6. tAVAX(min) must be satisfied.
7. If the current value of tWHGL is lower than the minimum value given in the above table, tAVQV during the following Read operation
may increase by tWHGL(current) – tWHGL(min).
8. All timings are measured according to the conditions for output transition timing reference voltage shown on Figure 6., AC Mea-
surement I/O Waveform.
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