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2.3 
Recommended Dimensions for User System Mount Pad 
Figure 5 shows the recommended dimensions for the mount pad (footprint) for the user system with 
an IC socket for an TFP-80F package (IC149-080-051-B51: manufactured by YAMAICHI 
ELECTRONICS Co., Ltd.).  Note that the dimensions in figure 5 are somewhat different from those 
of the actual chip's mount pad. 
 
Unit: mm
0.65
 
 
0.05
0.40
 
 
0.05
0.65
 
 
19 = 12.35
 
 
0.05
06.5
 
 19 = 12.35
 
 
0.05
14.00 (max.)
17.20 (min.)
0.65
 
 
0.05
 
Figure 5   Recommended Dimensions for Mount Pad