参数资料
型号: 72V845L15PFI8
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: FIFO
英文描述: 4K X 18 BI-DIRECTIONAL FIFO, 10 ns, PQFP128
封装: TQFP-128
文件页数: 11/26页
文件大小: 325K
代理商: 72V845L15PFI8
IDT72V805/72V815/72V825/72V835/72V845
3.3 V CMOS DUAL SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 4,096 x 18
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
19
Figure
21.
Read
Timing
with
Synchronous
Programmable
Flags
(FWFT
Mode)
WCLK
12
WEN
D
0
-
D
17
RCLK
tENS
REN
Q
0
-Q
17
PAF
HF
PAE
IR
OR
W
1
W
1
W
2
W
3
W
m+2
W
[m+3]
tOHZ
tSKEW1
tENH
tDS
tDH
tOE
tA
tPAFS
tWFF
tENS
OE
tSKEW2
W
D
4295
drw
21
tPAES
W
[D-n]
W
[D-n-1]
tA
tHF
tREF
W
[D-1]
W
D
tA
W
[D-n+1]
W
[m+4]
W
[D-n+2]
(1)
(2)
1
tENS
D-1
+
1 ]
[
W
2
D-1
+
2 ]
[
W
2
NOTES:
1.
tSKEW1
is
the
minimum
time
between
a
rising
RCLK
edge
and
a
rising
WCLK
edge
to
guarantee
that
IR
will
go
LOW
after
one
WCLK
plus
t
WFF
.If
the
time
between
the
rising
edge
of
RLCK
and
the
rising
edge
of
WCLK
is
less
than
t
SKEW1
,then
the
IR
assertion
may
be
delayed
an
extra
WCLK
cycle.
2.
tSKEW2
is
the
minimum
time
between
a
rising
RCLK
edge
and
a
rising
WCLK
edge
for
PAF
to
go
HIGH
during
the
current
clock
cycle.
If
the
time
between
the
rising
edge
of
RCLK
and
the
rising
edge
of
WCLK
is
less
th
an
tSKEW2,
then
the
PAF
deassertion
time
may
be
delayed
an
extra
WCLK
cycle.
3.
LD
=
HIGH
4
.
n
=
PAE
offset,
m
=
PAF
offset,
D
=
maximum
FIFO
depth
=
257
words
for
the
IDT72V805,
513
words
for
the
IDT72V815,
1,025
words
for
the
IDT72V825,
2,04
9
words
for
IDT72V835
and
4,097
words
for
IDT72V845.
5
.
Select
this
mode
by
setting
(
FL
,
RXI
,
WXI
)=
(1,0,1)
during
Reset.
相关PDF资料
PDF描述
72V805L15PFI9 256 X 18 BI-DIRECTIONAL FIFO, 10 ns, PQFP128
72V805L15PF8 256 X 18 BI-DIRECTIONAL FIFO, 10 ns, PQFP128
7305-0-15-15-47-14-04-0 BRASS, GOLD FINISH, PCB TERMINAL
7305-0-15-15-47-01-04-0 BRASS, GOLD FINISH, PCB TERMINAL
7305-0-15-01-47-27-04-0 BRASS, TIN FINISH, PCB TERMINAL
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