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Introduction

The 29C516E AtmelEDAC is a very low power flow–through16–bit Error Detection And Correction unit (EDAC) with two user data buses. The EDAC is used in a high integrity system for monitoring and correction of data values coming from the memory space. During a processor write cycle, at each memory location (16–bit width), EDAC calculated checkword (6 or 8–bit width) is added. When performing a read operation from memory, the 29C516E verifies the entire checkword and data combination. It detects and can correct 100 of all the single–bit errors and it detects all double–bit errors.

Features

● Very Low Power CMOS

● 16–Bit operation with 6 or 8 Check Bits

● Fast Error Detection : 31 ns (max.)

● Fast Error Correction : 32 ns (max.)

● Corrects all Single–Bit Errors

● Detects all Double–Bit Errors

● Detects some Multi–Bit Errors

● Detects Chip Errors (x1, x4 & x8 RAM Format)

● Correctable and Uncorrectable Error Flags

● Two User Data Buses

● User to User Transfer and Listening operation

● High Drive Capability on Buses : –12.8 mA

● TTL Compatible

● Single 5V ±10 Power Supply

● 100 Pin Multilayer Quad Flat Pack

(Flat leaded or L leaded).