Datasheet

567
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
29. Chip Identifier (CHIPID)
29.1 Description
Chip Identifier registers permit recognition of the device and its revision. These registers provide the sizes and
types of the on-chip memories, as well as the set of embedded peripherals.
Two chip identifier registers are embedded: CHIPID_CIDR (Chip ID Register) and CHIPID_EXID (Extension ID).
Both registers contain a hard-wired value that is read-only. The first register contains the following fields:
 EXT - shows the use of the extension identifier register
 NVPTYP and NVPSIZ - identifies the type of embedded non-volatile memory and its size
 ARCH - identifies the set of embedded peripherals
 SRAMSIZ - indicates the size of the embedded SRAM
 EPROC - indicates the embedded ARM processor
 VERSION - gives the revision of the silicon
The second register is device-dependent and reads 0 if the bit EXT is 0.
29.2 Embedded Characteristics
 Chip ID Registers
 Identification of the Device Revision, Sizes of the Embedded Memories, Set of Peripherals,
Embedded Processor
Note: 1. This device is not commercially available. Mounted only on the SAM3X-EK evaluation kit.
Table 29-1. ATSAM3A/X Chip IDs Register
Chip Name CHIPID_CIDR CHIPID_EXID
ATSAM3X8H
(1)
(Rev A) 0x286E0A60 0x0
ATSAM3X8E (Rev A) 0x285E0A60 0x0
ATSAM3X4E (Rev A) 0x285B0960 0x0
ATSAM3X8C (Rev A) 0x284E0A60 0x0
ATSAM3X4C (Rev A) 0x284B0960 0x0
ATSAM3A8C (Rev A) 0x283E0A60 0x0
ATSAM3A4C (Rev A) 0x283B0960 0x0