54.7 Revision D

Configuration Summary	Updated Table 1-3 SAM C21 Family Features with new values for the PTC Updated Table 1-4 SAM C20 Family Features with new values for the AC
Block Diagram	Updated the arrow to bridge between PORT and AHB-APB Bridge B.
Signal Descriptions	Updated Table 5-1 Signal Descriptions List - SAM C20/C21 with small typographical edits for VOUT and VREFA.
Multiplexed Signals	Updated Table 6-1, Table 6-2, Table 6-3, and Table 6-4 with new ADC-DAC/VREFA values in the REF column.
Processor and Architecture	Updated Table 10-3 and 10-4 in Interrupt Line Mapping with notations designating which chip the Peripheral Source applies to.
GCLK	Updated Figure 16-1 Block Diagram to correct missing information Updated the GENCTRL bit for the SYNCBUSY register
MCLK	Updated the AHBMASK Register to display the DIVAS and APBD bits Updated the TC4 bit of the APBCMASK Register to display the Description table Updated the APBDMASK Register with a new note on availability of features for SAMC2x “N” Series devices
PM	Updated the SLEEPMODE bit of the SLEEPCFG Register with new data in the table.
OSCCTRL	Updated the AMPGC bit of the XOSCCTRL Register with a new note.
SUPC	Updated Voltage Reference System Operation with new text referencing the INTREF Updated Selecting a Voltage Reference with new text for the INTREF Updated the ACTCFG bit of the BODVDD Register to remove an erroneous reference to Sleep Mode Updated the STDBYCFG bit of the BODVDD Register with new table values
EIC	Updated Initialization with new information for line 6 Updated Interrupt Pin Debouncing with new text designating the availability of features for SAM C20/C21 N Variants Updated the DEBOUNCEN Register with a new note Updated the DPRESCALER Register with a new note Updated the PINSTATE Register with a new note
NVMCTRL	Updated the LOCK Register with new reset values.
PORT I/O Pin Controller	Corrected typographical error in OUTTGL reference in Features.
CAN	Updated Power Management with new interrupt text Updated Sleep Mode Operation with new introductory sentence
CCL	Updated Truth Table Inputs Selection for Internal Events Inputs Selection (EVENT) with C20/C21 availability text Updated the table for the INSELx bit in the LUTCTRLn Register
ADC	Updated Overview with supporting text for the INTREF voltage reference Updated Features with new supporting text for INTREF Updated Analog Connections with new supporting text for INTREF Updated Reference Configuration with new supporting text for INTREF Updated the REFSEL bit for the REFCTRL Register Updated the MUXPOS bit for the INPUTCTRL Register
SDADC	Removed erroneous information from Features for Conversion Range Updated the REFSEL bit for the REFCTRL Register
AC	Updated the Overview with information for CMP2 and CMP3 on E and G variants Updated Features with information on the INTREF Updated the Block Diagrams to replace Bandgap with INTREF Updated Analog Connections to replace Bandgap text with INTREF Updated Principle of Operation to replace Bandgap text with INTREF Updated the table for the MUXNEG bit of the COMPCTRL Register
DAC	Updated Analog Connections to replace Bandgap text with INTREF Updated the table for the REFSEL bit for the CTRLB Register
FREQM	Added a new note to the Block Diagram Updated the DIVREF bit description for the CFGA Register
Electrical Characteristics at 85°C	Updated Table 45-18 Decoupling Requirements in Voltage Regulator Characteristics with new values and a new note Updated Table 45-19 Operating Conditions in Analog-to-Digital Converter (ADC) Characteristics with INTREF replacing Bandgap Updated Table 45-23 Operating Conditions in Sigma-Delta Analog-to-Digital Converter (SDADC) Characteristics with the addition of a note and the removal of single-ended mode references Updated Crystal Oscillator Characteristics with a new equation and removed C_SHUNTfrom the diagram
Electrical Characteristics at 105°C	Updated Table 47-8 Operating Conditions in Sigma-Delta Analog-to-Digital Converter (SDADC) Characteristics to remove the Single-ended mode reference and added new note.
AEC Q100 Grade 1, Electrical Characteristics at 125°C	Updated Table 48-3 Current Consumption with new values for the Maximum under Standby.
Schematic Checklist	Removed pF references from Figure 50-7 Crystal Oscillator Schematic and removed pF references from Table 50-5 in Crystal Oscillator

Configuration Summary

Updated Table 1-3 SAM C21 Family Features with new values for the PTC
Updated Table 1-4 SAM C20 Family Features with new values for the AC

Block Diagram

Updated the arrow to bridge between PORT and AHB-APB Bridge B.

Signal Descriptions

Updated Table 5-1 Signal Descriptions List - SAM C20/C21 with small typographical edits for VOUT and VREFA.

Multiplexed Signals

Updated Table 6-1, Table 6-2, Table 6-3, and Table 6-4 with new ADC-DAC/VREFA values in the REF column.

Processor and Architecture

Updated Table 10-3 and 10-4 in Interrupt Line Mapping with notations designating which chip the Peripheral Source applies to.

GCLK

Updated Figure 16-1 Block Diagram to correct missing information
Updated the GENCTRL bit for the SYNCBUSY register

MCLK

Updated the AHBMASK Register to display the DIVAS and APBD bits
Updated the TC4 bit of the APBCMASK Register to display the Description table
Updated the APBDMASK Register with a new note on availability of features for SAMC2x “N” Series devices

PM

Updated the SLEEPMODE bit of the SLEEPCFG Register with new data in the table.

OSCCTRL

Updated the AMPGC bit of the XOSCCTRL Register with a new note.

SUPC

Updated Voltage Reference System Operation with new text referencing the INTREF
Updated Selecting a Voltage Reference with new text for the INTREF
Updated the ACTCFG bit of the BODVDD Register to remove an erroneous reference to Sleep Mode
Updated the STDBYCFG bit of the BODVDD Register with new table values

EIC

Updated Initialization with new information for line 6
Updated Interrupt Pin Debouncing with new text designating the availability of features for SAM C20/C21 N Variants
Updated the DEBOUNCEN Register with a new note
Updated the DPRESCALER Register with a new note
Updated the PINSTATE Register with a new note