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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

Variant number, the r value in the rnpn product revision identifier:

0x0 = Revision 0

[19:16]Constant

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

Revision number, the p value in the rnpn product revision identifier:

0x0 = Patch 0


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