AT-89C52 Datasheet, PDF (4/11 Pages) ATMEL Corporation – 125°C DYNAMIC OPERATING LIFE TEST

PAGE 4 OF 11
LOT
NUMBER
4C1407
4D1707
4C1521
4D1047
5C1951
5C2822
7D2904-3
7D2904-1
7D2857
1G0215
3H5470-1
3H4406-1
5H2255A
5J3756-1
5J3757-1
AT-89C52
PLASTIC PACKAGE
125°C DYNAMIC OPERATING LIFE TEST
DATE
CODE
4C9441
4D9441
4C9445
4D9502
5C9547
5C9549
7D9811
7D9809
7D9827
1G0136
3H0346
3H0346
5H0544
5J0603
5J0603
SAMPLE
SIZE
80
115
90
90
112
143
100
100
100
100
160
160
100
100
80
TOTAL
CKT-HRS(K)
80.0
115.0
90.0
90.0
112.0
143.0
100.0
100.0
100.0
100.0
160.0
160.0
100.0
100.0
80.0
NUMBER
OF FAILURES
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
TOTAL DEVICE HOURS
BEST ESTIMATE
50°C AMBIENT
CONFIDENCE ESTIMATE
FAILURE RATE
1,630,000 DEVICE HOURS
λ = 0.04% PER 1000 HOURS
EXTRAPOLATION TO 50°C VIA
ARRHENNIUS EQUATION AND
ACTIVATION ENERGY OF 0.5eV
λ = 0.001% PER 1,000 HOURS (14 FITS)
λ 60 = 0.002% PER 1000 HOURS
60% CONFIDENCE (19 FITS)
λ 90 = 0.005% PER 1000 HOURS
90% CONFIDENCE (48 FITS)