IDT72V821L15PF 데이터 시트보기 (PDF) - Integrated Device Technology
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IDT72V821L15PF Datasheet PDF : 16 Pages
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DEPTH EXPANSION — These FIFOs can be adapted to applications that
require greater than 256/512/1,024/2,048/4,096/8,192 words. The exist-
ence of double enable pins on the read and write ports allow depth expansion.
The Write Enable 2/Load (WENA2, WENB2) pins are used as a second write
enables in a depth expansion configuration, thus the Programmable flags are
set to the default values. Depth expansion is possible by using one enable
input for system control while the other enable input is controlled by expansion
logic to direct the flow of data. A typical application would have the expansion
logic alternate data access from one device to the next in a sequential manner.
The IDT72V801/72V811/72V821/72V831/72V841/72V851 operates in the
Depth Expansion configuration when the following conditions are met:
1. WENA2/LDAand WENB2/LDBpins are held HIGH during Reset so that
these pins operate as second Write Enables.
2. External logic is used to control the flow of data.
Please see the Application Note "DEPTH EXPANSION OF IDT'S SYN-
CHRONOUS FIFOs USING THE RING COUNTER APPROACH" for
details of this configuration.
ORDERING IN.ORMATION
IDT
XXXXX
Device Type
L
Power
XX
Speed
PF
Package
Process/
Temperature
Range
BLANK
I(1)
PF
TF
10
15
20
L
72V801
72V811
72V821
72V831
72V841
72V851
NOTE:
1. Industrial temperature range product for the 15ns speed grade is available as a standard device.
Commercial (0°C to +70°C)
Industrial (-40°C to +85°C)
Thin Quad Flatpack (TQFP, PN64-1)
Slim Thin Plastic Quad Flatpack (STQFP, PP64-1)
Commercial Only
Commercial And Industrial
Commercial Only
Low Power
Clock Cycle Time
(tCLK), speed in
Nanoseconds
256 x 9 3.3 Volt DUAL SyncFIFO
512 x 9 3.3 Volt DUAL SyncFIFO
1,024 x 9 3.3 Volt DUAL SyncFIFO
2,048 x 9 3.3 Volt DUAL SyncFIFO
4,096 x 9 3.3 Volt DUAL SyncFIFO
8,192 x 9 3.3 Volt DUAL SyncFIFO
4093 drw 20
DATASHEET DOCUMENT HISTORY
04/24/2001
pgs. 4, 5 and 16
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
for SALES:
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
for TECH SUPPORT:
(408) 330-1753
FIFOhelp@idt.com
PF Pkg: www.idt.com/docs/PSC4036.pdf
TF Pkg: www.idt.com/docs/PSC4046.pdf
The SyncFIFO is a trademark and the IDT logo is a registered trademark of Integrated Device Technology, Inc.
16
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