Electronic Components Datasheet Search |
|
IDT72221L25PF Datasheet(PDF) 1 Page - Integrated Device Technology |
|
IDT72221L25PF Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 19 page 5.07 1 IDT72421/72201/72211/72221/72231/72241 CMOS SyncFIFO ™ 64 x 9, 256 x 9, 512 x 9, 1024 x 9, 2048 x 9 and 4096 x 9 MILITARY AND COMMERCIAL TEMPERATURE RANGES Integrated Device Technology, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES DECEMBER 1995 ©1996 Integrated Device Technology, Inc DSC-2655/6 For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391. IDT72421 IDT72201 IDT72211 IDT72221 IDT72231 IDT72241 CMOS SyncFIFO ™ 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9 FEATURES: • 64 x 9-bit organization (IDT72421) • 256 x 9-bit organization (IDT72201) • 512 x 9-bit organization (IDT72211) • 1024 x 9-bit organization (IDT72221) • 2048 x 9-bit organization (IDT72231) • 4096 x 9-bit organization (IDT72241) • 12 ns read/write cycle time (IDT72421/72201/72211) • 15 ns read/write cycle time (IDT72221/72231/72241) • Read and write clocks can be independent • Dual-Ported zero fall-through time architecture • Empty and Full flags signal FIFO status • Programmable Almost-Empty and Almost-Full flags can be set to any depth • Programmable Almost-Empty and Almost-Full flags default to Empty+7, and Full-7, respectively • Output enable puts output data bus in high-impedance state • Advanced submicron CMOS technology • Available in 32-pin plastic leaded chip carrier (PLCC), ceramic leadless chip carrier (LCC), and 32-pin Thin Quad Flat Pack (TQFP) • For Through-Hole product please see the IDT72420/ 72200/72210/72220/72230/72240 data sheet FUNCTIONAL BLOCK DIAGRAM • Military product compliant to MIL-STD-883, Class B DESCRIPTION: The IDT72421/72201/72211/72221/72231/72241 SyncFIFO ™ are very high-speed, low-power First-In, First- Out (FIFO) memories with clocked read and write controls. The IDT72421/72201/72211/72221/72231/72241 have a 64, 256, 512, 1024, 2048, and 4096 x 9-bit memory array, respectively. These FIFOs are applicable for a wide variety of data buffering needs such as graphics, local area networks and interprocessor communication. These FIFOs have 9-bit input and output ports. The input port is controlled by a free-running clock (WCLK), and two write enable pins ( WEN1, WEN2). Data is written into the Synchronous FIFO on every rising clock edge when the write enable pins are asserted. The output port is controlled by another clock pin (RCLK) and two read enable pins ( REN1, REN2). 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 ( OE) is provided on the read port for three-state control of the output. The Synchronous FIFOs have two fixed flags, Empty ( EF) and Full ( FF). Two programmable flags, Almost-Empty (PAE) and Almost-Full ( PAF), are provided for improved system control. The programmable flags default to Empty+7 and Full- 7 for PAE and PAF, respectively. The programmable flag offset loading is controlled by a simple state machine and is initiated by asserting the load pin ( LD). The IDT72421/72201/72211/72221/72231/72241 are fabricated using IDT’s high-speed submicron CMOS technology. Military grade product is manufactured in compliance with the latest revision of MIL-STD-883, Class B. WCLK WEN1 WEN2 D0 - D8 LD OFFSET REGISTER INPUT REGISTER RAM ARRAY 64 x 9, 256 x 9, 512 x 9, 1024 x 9, 2048 x 9, 4096 x 9 WRITE CONTROL LOGIC WRITE POINTER RESET LOGIC OUTPUT REGISTER OE RS Q0 - Q8 RCLK REN1 REN2 READ CONTROL LOGIC READ POINTER FLAG LOGIC EF PAE PAF FF 2655 drw 01 SyncFIFO is a trademark and the IDT logo is a registered trademark of Integrated Device Technology, Inc. |
Similar Part No. - IDT72221L25PF |
|
Similar Description - IDT72221L25PF |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |