Introduction
The 29C516E Atmel EDAC is a very low power flow–through 16–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).