Data Sheet

Atmel | SMART SAM D21 [DATASHEET]

Atmel-42181G–SAM-D21_Datasheet–09/2015

10.6.2.2 PAC1 Register Description

Write Protect Clear

Name: WPCLR

Offset: 0x00

Reset: 0x00000002

Property: -

z Bits 31:7 – Reserved

These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to

zero when this register is written. These bits will always return zero when read.

z Bits 6:1 – MTB, USB, DMAC, PORT, NVMCTRL, DSU: Write Protect

0: Write-protection is disabled.

1: Write-protection is enabled.

Writing a zero to these bits has no effect.

Writing a one to these bits will clear the Write Protect bit for the corresponding peripherals.

z Bit 0 – Reserved

This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero

when this register is written. This bit will always return zero when read.

Bit3130292827262524

AccessRRRRRRRR

Reset00000000

Bit2322212019181716

AccessRRRRRRRR

Reset00000000

Bit151413121110 9 8

AccessRRRRRRRR

Reset00000000

Bit76543210

MTB USB DMAC PORT NVMCTRL DSU

Access R R/W R/W R/W R/W R/W R/W R

Reset00000010