Data Sheet

72
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
12.13.8 Device Identification
The information in this register is related to the ordering code. Refer to the “Ordering Information” on page 5 for details.
Name: DID
Offset: 0x0018
Reset: -
Property: Write-Protected
z Bits 31:28 – PROCESSOR[3:0]: Processor
The value of this field defines the processor used on the device. For this device, the value of this field is 0x1, cor-
responding to the ARM Cortex-M0+ processor.
z Bits 27:23 – FAMILY[4:0]: Product Family
The value of this field corresponds to the Product Family part of the ordering code. For this device, the value of this
field is 0x0, corresponding to the SAM D family of base line microcontrollers.
z Bit 22 – 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.
z Bits 21:16 – SERIES[5:0]: Product Series
The value of this field corresponds to the Product Series part of the ordering code. For this device, the value of this
field is 0x01, corresponding to a product with the Cortex-M0+ processor with DMA and USB features.
z Bits 15:12 – DIE[3:0]: Die Identification
Identifies the die in the family.
Bit 3130292827262524
PROCESSOR[3:0] FAMILY[4:1]
AccessRRRRRRRR
Reset00000000
Bit 2322212019181716
FAMILY
SERIES[5:0]
AccessRRRRRRRR
Reset00000000
Bit 151413121110 9 8
DIE[3:0] REVISION[3:0]
AccessRRRRRRRR
Reset00000000
Bit 76543210
DEVSEL[7:0]
AccessRRRRRRRR
Reset00000000