Homedatasheet49C465

49C465 Datasheet

32-Bit Flow-thru Edc Unit
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The a 32-bit, two-data bus, Flow-thruEDC unit. The chip provides single-error correction and two and three bit error detection of both hard and soft memory errors. It can be expanded to 64-bit widths by cascading two units, without the need for additional external logic. The Flow-thruEDC has been optimized for speed and simplicity of control. The EDC unit has been designed for use in either of two configurations in an error correcting memory system. The bidirectional configuration is most appropriate for systems using bidirectional memory buses. A second system configuration utilizes external octal buffers, and is well-suited for systems using memory with separate I/O buses. The IDT49C465/A supports partial word writes, pipelining, and error diagnostics. It also provides parity protection for data on the system side.

32-bit wide Flow-thruEDCTM unit, cascadable to 64 bits Single-chip 64-bit Generate Mode Separate system and memory buses On-chip pipeline latch with external control Supports bidirectional and common I/O memories Corrects all single-bit errors Detects all double-bit errors and some multiple bit errors Error Detection Time 12ns Error Correction Time 14ns On chip diagnostic registers Parity generation and checking on system data bus Low power CMOS 100mA typical 20MHz 144-pin PGA and PQFP packages

The IDT logo is a registered trademark of Integrated Device Technology, Inc.




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