37.4 Revision D - 03/2020

This revision includes typographical corrections throughout the document. For a list of other items, refer to the following table:


Section	Updates
Features	Added 27-ball WLCSP package
Configuration Summary	Updated the SAM D20 Family Features table, and added WLCSP27 package
Ordering Information	Updated Pin Count field for 27-pin and 45-pin WLCSP packages Added Note 3 and 4
Pinout	A note is added for the QFN32/TQFP32 package WLCSP27 pinout added
I/O Multiplexing and Considerations	Ball number is added for WLCSP27, WLCSP45 and UFBGA packages in PORT Function Multiplexing
SERCOM I²C	Updated the CLKHOLD bit description in STATUS Slave Register Updated ADDR bits from 7 to 8 in the Master Address register, ADDR
SYSCTRL	Updated the VREG Register with a new Reserved bit and new note.
TC – Timer/Counter	Updated number of timers from five to eight in Features sub-section Updated Counter Mode sub-section for 32-bit Counter mode (COUNT32)
AC	Updated Figure 29-2 Continuous Measurement Example with a new name for first signal.
Packaging Information	Updated Thermal Resistance Data for 27-ball WLCSP package Added WLCSP27 package drawing for the 27-ball WLCSP package