Features
- Clock frequencies up to 83 MHz (8 ns access time)
- Two independent clocked FIFOs buffering data in opposite directions
- Programmable Almost-Empty and Almost-Full flags
- Serial or parallel programming of partial flags
- Port B bus sizing of 36-bits (long word), 18-bits (word) and 9-bits (byte)
- Big- or Little-Endian format for word and byte bus sizes
- Mailbox bypass registers for each FIFO
- Free-running CLKA and CLKB may be asynchronous or coincident
- Auto power down minimizes power dissipation
- Available 128-pin TQFP package
- Industrial temperature range (–40C to +85C) is available
723644 - Block Diagram
Description
The 723644 is a CMOS bidirectional synchronous (clocked) FIFO. Two independent 1K x 36 dual-port SRAM FIFOs on board each chip buffer data in opposite directions. The clocks for each port are independent of one another and can be asynchronous or coincident. The enables for each port are arranged to provide a simple bidirectional interface between microprocessors and/or buses with synchronous control.
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Temp. Grade | Pb (Lead) Free | Carrier Type |
|---|---|---|---|---|---|---|---|---|
| 723644L12PF | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Tray |
| 723644L12PF8 | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Reel |
| 723644L15PF | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Tray |
| 723644L15PF8 | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Reel |
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- Product Change NoticePDF 24 KB 7WDXRDKU4E7E-5-41812 Nov 14, 2012
- Product Change NoticePDF 164 KB 7WDXRDKU4E7E-5-41811 May 11, 2006
- Product Change NoticePDF 290 KB 7WDXRDKU4E7E-5-41712 Jul 19, 2005
- Product Change NoticePDF 80 KB 7WDXRDKU4E7E-5-41813 Dec 14, 2004
- Product Change NoticePDF 150 KB 7WDXRDKU4E7E-5-41738 Mar 20, 2003
- Product Change NoticePDF 65 KB 7WDXRDKU4E7E-5-41737 Mar 20, 2003
- Product Change NoticePDF 274 KB 7WDXRDKU4E7E-5-41807 Jun 11, 2001
- End Of Life NoticePDF 30 KB 7WDXRDKU4E7E-5-41682 May 24, 2001
- Product Change NoticePDF 44 KB 7WDXRDKU4E7E-5-41728 Nov 18, 1999
- End Of Life NoticePDF 86 KB 7WDXRDKU4E7E-5-54845 Jan 21, 2013
- End Of Life NoticePDF 645 KB 7WDXRDKU4E7E-5-62027 Sep 14, 2017
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- End Of Life NoticePDF 645 KB 7WDXRDKU4E7E-5-62027 Sep 14, 2017
- End Of Life NoticePDF 86 KB 7WDXRDKU4E7E-5-54845 Jan 21, 2013
- Product Change NoticePDF 24 KB 7WDXRDKU4E7E-5-41812 Nov 14, 2012
- Product Change NoticePDF 164 KB 7WDXRDKU4E7E-5-41811 May 11, 2006
- Product Change NoticePDF 290 KB 7WDXRDKU4E7E-5-41712 Jul 19, 2005View More (13)
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