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IDT72801 Datasheet

  • IDT72801

  • DUAL CMOS SyncFIFO?

  • 157.85KB

  • IDT

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DUAL CMOS SyncFIFO鈩?/div>
Integrated Device Technology, Inc.
IDT72801
IDT72811
IDT72821
IDT72831
IDT72841
FEATURES:
鈥?The 72801 is equivalent to two 72201 256 x 9 FIFOs
鈥?The 72811 is equivalent to two 72211 512 x 9 FIFOs
鈥?The 72821 is equivalent to two 72221 1024 x 9 FIFOs
鈥?The 72831 is equivalent to two 72231 2048 x 9 FIFOs
鈥?The 72841 is equivalent to two 72241 4096 x 9 FIFOs
鈥?Offers optimal combination of large capacity, high speed,
design flexibility and small footprint
鈥?Ideal for prioritization, bidirectional, and width expansion
applications
鈥?15 ns read/write cycle time FOR THE 72801/72811
鈥?20 ns read/write cycle time FOR THE 72821/72831/72841
鈥?Separate control lines and data lines for each FIFO
鈥?Separate empty, full, programmable almost-empty and
almost-full flags for each FIFO
鈥?Enable puts output data lines in high-impedance state
鈥?Space-saving 64-pin Thin Quad Flat Pack (TQFP)
鈥?Industrial temperature range (-40
O
C to +85
O
C) is avail-
able, tested to military electrical specifications
DESCRIPTION:
72801/72811/72821/72831/72841 are dual synchronous
(clocked) FIFOs. The device is functionally equivalent to two
72201/72211/72221/72231/72241 FIFOs in a single package
with all associated control, data, and flag lines assigned to
separate pins.
Each of the two FIFOs (designated FIFO A and FIFO B)
contained in the 72801/72811/72821/72831/72841 has a 9-
bit input data port (DA0 - DA8), DB0 - DB8) and a 9-bit output
data port (QA0 - QA8, QB0 - QB8). Each input port is
controlled by a free-running clock(WCLKA, WCLKB), and two
write enable pins (
WENA1
, WENA2,
WENB1
, WENB2). Data
is written into each of the two arrays on every rising clock edge
of the write clock (WCLKA WCLKB) when the appropriate
write enable pins are asserted.
The output port of each FIFO bank is controlled by its
associated clock pin (RCLKA, RCLKB) and two read enable
pins (
RENA1
,
RENA2
,
RENB1
,
RENB2
). The read clock can
be tied to the write clock for single clock operation or the two
clocks can run asynchronous of one another for dual clock
operation. An output enable pin (
OEA
,
OEB
) is provided on the
read port of each FIFO for three-state output control .
Each of the two FIFOs has two fixed flags, empty (
EFA
,
EFB
)
and full (
FFA
,
FFB
). Two programmable flags, almost-empty
(
PAEA
,
PAEB
) and almost-full (
PAFA
,
PAFB
), are provided for
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
GND
QB
8
QB
7
QB
6
QB
5
QB
4
QB
3
QB
2
QB
1
QA
0
FFA
EFA
OEA
RENA
2
RCLKA
RENA
1
PIN CONFIGURATION
WENA
2
/
LDA
WCLKA
QA
1
QA
2
QA
3
QA
4
QA
5
QA
6
QA
7
QA
8
V
CC
WENA
1
RSA
DA
8
DA
7
DA
6
PAFA
PAEA
WENB
2
/
LDB
WCLKB
WENB
1
RSB
DA
5
DA
4
DA
3
DA
2
DA
1
DA
0
DB
8
DB
7
DB
6
DB
5
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PN64-1
TQFP,
TOP VIEW
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
FFB
EFB
OEB
RENB
2
RCLKB
RENB
1
GND
V
CC
DB
0
DB
1
DB
2
DB
3
DB
4
QB0
PAEB
PAFB
3034 drw 01
SyncFIFO is a trademark and the IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
漏1996
Integrated Device Technology, Inc
For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391.
NOVEMBER 1996
DSC-3034/1
5.15
1

IDT72801 PDF文件相關(guān)型號(hào)

IDT72801,IDT72811,IDT72821,IDT72841,IDT72851

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