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IDT72231
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MFG:IDT Package Cooled:PLCC D/C:13

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Part Number: IDT72231

MFG: IDT

Package Cooled: PLCC

D/C: 13

Description: The IDT72421/72201/72211/72221/72231/72241/72251 SyncFIFO™ are very high-speed, low-power First-In, First-Out (FI...

IDT72231 General Description

The IDT72421/72201/72211/72221/72231/72241/72251 SyncFIFO™ are very high-speed, low-power First-In, First-Out (FIFO) memories with clocked read and write controls. These devices have a 64, 256, 512, 1,024, 2,048, 4,096, and 8,192 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 PAEand PAF, respectively. The programmable flag offset loading is controlled by a simple state machine and is initiated by asserting the load pin ( LD ).

These FIFOs are fabricated using IDT's high-speed submicron CMOS technology.

IDT72231 Maximum Ratings

Symbol	Rating	Com'l & Ind'l	Commercial	Unit
VTERM	Terminal Voltage with Respect to GND	0.5 to +70	0.5 to +70	V
TSTG	Storage Temperature	55 to +125	65 to +150
IOUT	DC Output Current	55 to +50	50	mA

IDT72231 Features

• 64 x 9-bit organization (IDT72421)
• 256 x 9-bit organization (IDT72201)
• 512 x 9-bit organization (IDT72211)
• 1,024 x 9-bit organization (IDT72221)
• 2,048 x 9-bit organization (IDT72231)
• 4,096 x 9-bit organization (IDT72241)
• 8,192 x 9-bit organization (IDT72251)
• 10 ns read/write cycle time
• 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 the 32-pin plastic leaded chip carrier (PLCC) and
   32-pin Thin Quad Flat Pack (TQFP)
• For through-hole product please see the IDT72420/72200/72210/
   72220/72230/72240 data sheet
• Industrial temperature range (40°C to +85°C) is available

IDT72231 Connection Diagram

IDT72231 datasheet

IDT72231
PDF/DataSheet Download

Datasheet: IDT72231
File Size: 159859 KB
Manufacturer: IDT
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