Datasheet

18. WDT –
Watchdog Timer
• 18.5.7 Debug Operation: Removed the sentence "This peripheral can be
forced to continue operation during debugging." The WDT can not be forced
to continue operation in debug mode.
45.8 Rev. L – 09/2016
2. Configuration Summary • Added information on number of pins for the WLCSP pakcage. SAM
D21E is offered in 32 pin packages, while the WLCSP has 35 pins.
13. DSU - Device Service
Unit
• 13.11.5 Testing of On-Board Memories MBIST: Updated
description.
14. Clock System • 14.5 Disabling a Peripheral: New section added.
17. SYSCTRL – System
Controller
• 17.8.5 XOSC.AMPGC bit description updated.
21. EIC – External Interrupt
Controller
• 21.6.6 Interrupts: Added note explaining how it works when the
same external interrupt (EXTINT) is common on sevral pins.
24. EVSYS – Event
System
• 24.8.1 CTRL.SWRST: Added recommendation when doing a
software reset.
28. SERCOM I2C – Inter-
Integrated Circuit
• Corrected cross references in the Master 28.10.1 CTRLA.SCLSM
and Slave 28.8.1 CTRLASCLSM bits.
31. TCC – Timer/Counter
for Control Applications
• Value 0 in CAPTMIN mode is captured only in down-counting mode.
33. ADC – Analog-to-
Digital Converter
• 33.6.5 Differential and Single-Ended Conversions: Corrected
register reference from INPUTCTRL.DIFFMODE to
CTRLB.DIFFMODE.
• 33.8.14 RESULT: Corrected description. Reference to "single-
ended mode" corrected to "single conversion mode".
37. Electrical
Characteristics
• 37.3 Absolute Maximum Ratings: Add ESD warnings.
• 37.16.5 I2S Timing: f
M_SCKO
and f
M_SCKI
values for VDD=1.8V
moved from the minimum to maximum column.
• XOSC32K 37.13.2.1.1 Crystal Oscillator Characteristics: Removed
conditions from the parasitic capacitor loads C
XIN32
and C
XOUT32
.
The difference between package types is so small that it can be
ingored.
42. Schematic Checklist • 42.5.3 External Real Time Oscillator: Added note on how to
minimize jitter.
39. Electrical
Characteristics at 125°C
• 39.4 Maximum Clock Frequencies: Corrected heading of Table
39-6 say "Device Variant B".
SAM D21 Family
Data Sheet Revision History
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 1183