ATUC256L3U_14 Datasheet, PDF (23/45 Pages) ATMEL Corporation – High-performance, Low-power 32-bit Atmel

Figure 4-2. QFN-48 Package Drawing
ATUC64/128/256L3/4U
Note: The exposed pad is not connected to anything internally, but should be soldered to ground to increase board level reliability.
Table 4-5.
140
Device and Package Maximum Weight
Table 4-6. Package Characteristics
Moisture Sensitivity Level
Table 4-7. Package Reference
JEDEC Drawing Reference
JESD97 Classification
mg
MSL3
M0-220
E3
23
32142DS–06/2013