What is the width of the pins on the TQFP-48 package on EFM32HG devices? This is not listed as a dimension in tables 4.4 (package specifications).
Firstly, page 59, Figure 5.1 does show the recommended landing patterns for this device's pins as 1.6 x 0.3 mm. So, it's reasonable to expect the pin width to be, at most 0.3 mm.
In table 4.4, we can also derive the pad with by examining the distance between the edges of adjacent pins (0.2 mm, T, U, V, Z) and the pitch width (the distance between the centers of pins (0.5 mm). The pitch width should be equal to (1/2 pin width) * 2 + pin separation. So pin width + 0.2 mm = 0.5 mm, so pin width equals 0.3 mm.
Examining a TQFP-48 device here with a microscope, I observe that the pins indeed do seem larger than the gaps between them, so 0.3 mm should be the correct number for the pin width, and 0.2 mm for the pin gaps.