AT-89C52 Datasheet, PDF (3/11 Pages) ATMEL Corporation – 125°C DYNAMIC OPERATING LIFE TEST

PAGE 3 OF 11
LOT
NUMBER
5C2822
DATE
CODE
5C9547
AT-89C52
200°C DATA RETENTION BAKE
SAMPLE
SIZE
393
TOTAL
CKT-HRS(K)
393.0
NUMBER
OF FAILURES
0
FAILURE RATE
TOTAL DEVICE HOURS
BEST ESTIMATE
50°C AMBIENT
CONFIDENCE ESTIMATE
393,000 DEVICE HOURS
λ = 0.18% PER 1000 HOURS
EXTRAPOLATION TO 50°C VIA
ARRHENNIUS EQUATION AND
ACTIVATION ENERGY OF 0.5eV
λ = 0.0006% PER 1,000 HOURS (6 FITS)
λ 60 = 0.0008% PER 1000 HOURS
60% CONFIDENCE (8 FITS)
λ 90 = 0.002% PER 1000 HOURS
90% CONFIDENCE (20 FITS)