(M6720xxF) Rad Tolerant High Speed 16Kx9 Parallel Fifo
Description
Active Errata List
• Limitation to the operating conditions inside a timing and data marginal configuration.
Errata History
Lot Number M67206F, M672061F, M67204F all lot numbers Errata List 1
Errata Description
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1.
Limitation to the operating conditions inside a timing and data marginal configuration.
Radiation Tolerant FIFOs
Rising edge of READ from 0 ns up to 8 ns (typical) before the falling edge of WRITE when only one data is left to read.
See Figure 1 for behavior description.
Failure Mode: Empty flag glitch and following data shift out 2nd byte corruption occurs when the rising edge of the first "READ" for data shift out occurs before falling edge of the third "WRITE" for data shift in.
Worst Case Range: between 0 ns and 11 ns Temperature = 125°C Voltage = 4.
5V Characterization: -55°C / 5.
5V: 6 ns 25°C / 5V: Workaround These FIFOs are functional outside of the above timing and data marginal configuration.
The recommended action is to avoid this particular configuration .
Please contact Atmel for a case by case application conditions analysis.
Figure 1.
Behavior Description 1 WR 1 n-1 n-1 n 0-8 ns Wrong data n+1 8 ns 125°C / 4.
5V: 11 ns
M67206F M672061F M67204F Errata Sheet
R
Read n+1 instead of n EF
Rev.
4140A–AERO–06/02
1
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