50.4 Rev.A - 03/2017

Section Changes
Document
  • Change of document style.
  • New Microchip document number. Previous version was Atmel document 42402 rev.E.
Device
  • Package UFBGA100 added.
  • Colors and legends in pinout diagrams updated.
  • Editorial updates.
PAC - Peripheral Access Controller
  • Editorial updates.
FREQM - Frequency Meter
  • Editorial updates.
SUPC - Supply Controller
  • Register BOD12 is PAC Write-Protected and Write-Synchronized.
  • Editorial updates.
WDT - Watchdog Timer
  • Register CONFIG is not Enable-protected.
RTC - Real-Time Counter
  • Functional description of General Purpose registers added.
  • Bit field position updated: CTRLB.ACTF, CTRLB.DEBF, SYNCBUSY.GPn.
  • Editorial updates.
DMAC - Direct Memory Access Controller
  • STEPSIZE factor in SRAM register BTCTRL is based on beat size in bytes.
  • Editorial updates.
NVMCTRL - Nonvolatile Memory Controller
  • 16 region locks available.
PORT - I/O Pin Controller
  • Notes added: PINCFG and PMUX registers are repeated per PORT group with offset 0x80.
  • Bit PORT.CTRL.SAMPLING is write-only.
SERCOM USART - SERCOM Synchronous and Asynchronous Receiver and Transmitter
  • Editorial updates.
TC - Timer/Counter
  • Register representation re-organized.
  • CTRLA.SWRST is write-only
  • STATUS register is Read-Synchronized.
  • Editorial updates.
TCC- Timer/Counter for Control Applications
  • Registers PER, PATT are Write-Synchronized.
  • Bit fields in PATBYF register are 8 bit in size.
  • Bit field TCC.DBGCTRL.FDDBD: Default ‘0’ is OCD fault protection disabled.
TRNG - True Random Number Generator
  • Bit field DATA.DATA is R/W.
AES - Advanced Encryption Standard
  • Register DBGCTRL is not enable-protected.
  • Editorial updates.
USB - Universal Serial Bus
  • Device STATUS register has reset value 0x40.
  • Editorial updates.
CCL - Configurable Custom Logic
  • Editorial updates.
PTC - Peripheral Touch Controller
  • Editorial updates.
44 Electrical Characteristics
  • FDPLL96M: Maximum FOUT 96MHz in PL2, and 48MHz in PL0.
47 Schematic Checklist
  • Leave VLCD pin unconnected when the LCD controller is not used.
  • Editorial updates.
SAM L22 Errata New Errata:
  • SERCOM: In USART autobaud mode, missing stop bits are not recognized as inconsistent sync (ISF) or framing (FERR) errors. Errata reference 13852
  • EIC: Changing the NMI configuration (CONFIGn.SENSEx) on the fly may lead to a false NMI interrupt. Errata reference 15279
  • ADC: Clock request not going low in standby mode. Errata reference 15463
  • PORT: PORT read/write attempts on non-implemented registers, including addresses beyond the last implemented register group (PA, PB, …) do not generate a PAC protection error. Errata reference 15611
  • TCC: Using dithering mode with external retrigger events can lead to unexpected stretch of right aligned pulses, or shrink of left aligned pulses. Errata reference 15625
  • DMAC: When using more than one DMA channel and one of them is w/linked descriptor, a fetch error can appear on this channel. Errata reference 15670
  • DMAC: When at least one channel w/linked descriptors is already active, and the channel number of the channel being enabled is lower than the channel already active, enabling another DMA channel can result in a channel Fetch Error (FERR) or an incorrect descriptor fetch. Errata reference 15683
  • FDPLL: When changing on-the-fly the FDPLL ratio in DPLLnRATIO register, STATUS.DPLLnLDRTO will not be set when the ratio update will be completed. Errata reference 15753