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4.3.2. CPUID Register

The CPUID register contains the processor part number, version, and implementation information. See the register summary in Table 4.9 for its attributes. The bit assignments are:

Table 4.10. CPUID register bit assignments
BitsNameFunction
[31:24]IMPLEMENTER

Implementer code:

0x41 = ARM.

[23:20]VARIANT

Major revision number n in the npm revision status:

0x0 = Revision 0.

[19:16]ARCHITECTURE

Constant that defines the architecture of the processor:

0xC = ARMv6-M architecture.

[15:4]PARTNO

Part number of the processor:

0xC60 = Cortex-M0+.

[3:0]REVISION

Minor revision number m in the rnpm revision status:

0x1 = Patch 1.


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