m69aw024b STMicroelectronics, m69aw024b Datasheet - Page 18

• Manufacturer Part Number: m69aw024b
• Description: 16 Mbit 1m X16 3v Asynchronous Psram
• Manufacturer: STMicroelectronics

M69AW024B
Note: 1. The minimum value must be equal to or greater than the sum of actual t
18/29
t
WLWH
Symbol
10. t
11. t
12. For other timings please refer to
t
t
2. The new write address is valid from either E1 High or W High.
3. t
4. t
5. t
6. t
7. Applicable if E1 stays Low after the Read cycle.
8. t
9. If the write operation is terminated by W followed by E1 High, the sum of actual t
WLWL
WLEL
lower than specified minimum value, t
value.
W must go Low t
t
t
isfaction of t
AXGL1
AXGL1
AXGL2
GHEL
ELEH
WLWH
EHEL1
EHEL1
EHEL1
(1,8)
or t
(Min) must be kept if the Read cycle is not performed prior to the Write cycle. In case G is disabled after a time t
or t
and t
maximum is applicable if E1 is kept Low and both W and G are kept High.
is the absolute minimum value if the Write cycle terminates with W and E1 Low.
must be equal or greater than 60ns.
(Min) must apply.
is specified from end of t
WLWH
WHWL
EHEL2
EHEL2
Alt.
t
t
t
is applicable if the Write operation is initiated by E1 or W, respectively.
WC
WS
WP
is applicable if the Write operation is terminated by E1 or W, respectively. If E1 goes High before t
ELEH2
is applicable if write operation is terminated by E1 and W, respectively. In case E1 is brought to High before sat-
(min), the t
(Min) after E1 goes Low. In other words, the Read cycle is initiated if t
Write Enable Low Set-up Time
Write Enable Write Pulse Width
Write Enable Write Cycle Time
EHEL1
AVAX
Table 7., Read and Standby Modes AC
(min) is also applied.
(Min) and is a reference value when access time is determined by t
AXGL1
is increased by the difference between the actual value and the specified minimum
Parameter
ELEH
Characteristics.
(or t
ELWL
WLWH
and t
).
Min
WLWH
45
80
0
GHEL
–60
and the sum of actual t
M69AW024B
(Min) is not kept.
Max
AXGL1
Min
50
90
0
–70
. If actual value is
WHWL
Max
GHEL
(Min), then
AVWL
Unit
(Min),
ns
ns
ns
and