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參數(shù)資料
| 型號： | V53C317405A50 |
| 廠商： | Mosel Vitelic, Corp. |
| 英文描述： | Mercury Displacement Relay; Coil Voltage DC Max:24V; Mounting Type:Panel; Contacts:3PST-3NO; Relay Mounting:Panel; Contact Rating:30A; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No; Relay Terminals:Screw RoHS Compliant: No |
| 中文描述： | 4米× 4 EDO公司頁面模式的CMOS動態(tài)隨機存儲器 |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 175K |
| 代理商： | V53C317405A50 |
8
V53C317405A Rev. 0.2 September 1998
MOSEL V ITELIC
V53C317405A
Notes:
1)
All voltages are referenced to V
SS
.
2)
I
CC1
, I
CC3
, I
CC4
and I
CC5
depend on cycle rate.
3)
I
CC1
and I
CC4
depend on output loading. Specified values are obtained with the output open.
4)
Address can be changed once or less while RAS = V
IL
. In case of I
CC4
it can be changed once or less during a EDO
page mode cycle
5)
An initial pause of 200
m
s is required after power-up followed by 8 RAS cycles of which at least one cycle has to be
a refresh cycle, before proper device operation is achieved. In case of using the internal refresh counter, a minimum
of 8 CAS-before-RAS initialization cycles instead of 8 RAS cycles are required.
6)
AC measurements assume t
T
= 2 ns.
7)
V
IH (min.)
and V
IL (max.)
are reference levels for measuring timing of input signals. Transition times are also measured
between V
IH
and V
IL
.
8)
Measured with the specified current load and 100 pF at V
OL
= 0.8 V and V
OH
= 2.0 V. Access time is determined
by the latter of t
RAC
, t
CAC
, t
CAA
,t
CPA
, t
OEA
. t
CAC
is measured from tristate.
9)
Operation within the t
RCD (max.)
limit ensures that t
RAC (max.)
can be met. t
RCD (max.)
is specified as a reference point
only. If t
RCD
is greater than the specified t
RCD (max.)
limit, then access time is controlled by t
CAC
.
10)
Operation within the t
RAD (max.)
limit ensures that t
RAC (max.)
can be met. t
RAD (max.)
is specified as a reference point
only. If t
RAD
is greater than the specified t
RAD (max.)
limit, then access time is controlled by t
CAA
.
11)
Either t
RCH
or t
RRH
must be satisfied for a read cycle.
12)
t
OFF (max.)
, t
OEZ (max.)
define the time at which the output achieves the open-circuit conditions and are not referenced
to output voltage levels. t
OFF
is referenced from the rising edge of RAS or CAS, whichever occurs last.
13)
Either t
DZC
or t
DZO
must be satisfied.
14)
Either t
CDD
or t
ODD
must be satisfied.
15)
t
WCS
, t
RWD
, t
CWD
and t
AWD
are not restrictive operating parameters. They are included in the data sheet as electri-
cal characteristics only. If t
WCS
> t
WCS (min.)
, the cycle is an early write cycle and data out pin will remain open-circuit
(high impedance) through the entire cycle; if t
RWD
> t
RWD (min.)
, t
CWD
> t
CWD (min.)
and t
AWD
> t
AWD (min.)
, the cycle
is a read-write cycle and I/O will contain data read from the selected cells. If neither of the above sets of conditions
is satisfied, the condition of I/O (at access time) is indeterminate.
16)
These parameters are referenced to the CAS leading edge in early write cycles and to the WE leading edge in
read-write cycles.
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