Cortex™-M1 Technical Reference ManualRevision: r1p0
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1.3. Configurable options

The processor comes in one of two forms:

Table 1.1 shows the features you can configure using parameters and the default for the processors.

Table 1.1. Parameter configurable options

FeatureConfigurable optionDefault value
Interrupts

External interrupts 1, 8, 16 or 32. 0 is not supported.

8
Data endiannessLittle-endian or BE-8 big-endian.Little-endian
OS extensionPresent or absent.Present
Debug[1]Full or Reduced debugFull
MultiplierNormal or small multiplier.Normal multiplier

[1] Present only if the processor is configured with debug.

Table 1.2 shows the features you can configure by setting processor pin values.

Table 1.2. Pin value configurable options

FeatureConfigurable option
Instruction TCM size[1]0KB (no Instruction TCM), 1KB, 2KB, and powers of 2 to 1MB.
Data TCM sizea0KB (no Data TCM), 1KB, 2KB, and powers of 2 to 1MB.
Instruction TCM aliasUpper Alias and/or Lower Alias enabled

[1] TCM size might be limited by the memory available on your FPGA. Contact your implementation team for more information.

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