9

Feature

Options

Floating-point

No floating-point

Single-precision floating-point only

DSP extension

No Armv8-M DSP Extension

Armv8-M DSP extension supported, including the following

instruction classes

TrustZone

No TrustZone for Armv8-M

TrustZone for Armv8-M security extension

Non-secure protected

memory regions

0 region, 4 regions, 8 regions, 12 regions, or 16 regions

Secure protected memory

regions

0 region, 4 regions, 8 regions, 12 regions, or 16 regions when

TrustZone is included

Security Attribution Unit

(SAU)

0 region, 4 regions, or 8 regions when TrustZone is included

Interrupts

1-480 interrupts

To support non-contiguous mapping, you can remove

individual interrupts

Number of bits of

interrupt priority

Between three and eight bits of interrupt priority, between 8

and 256 levels of priority implemented

Debug watchpoints and

breakpoints

Minimal debug

No Halting debug or memory and peripheral access

Reduced set

Two data watchpoint comparators and four breakpoint

comparators

Full set

Four data watchpoint comparators and eight breakpoint

comparators

ITM and DWT

functionality

No ITM or DWT trace

Complete ITM and DWT trace

ETM

No ETM support

ETM instruction execution trace

MTB

No MTB support

MTB instruction trace

CTI

No CTI

CTI included

WIC

No WIC controller

WIC controller included

External coprocessor

interface

No support for coprocessor hardware

Support for coprocessor hardware

Arm Custom Instructions

with Custom Datapath

Extension (CDE) modules

on a coprocessor basis

The coprocessor executes instructions and the

CDE modules are not used

The CDE module executes instructions and the

coprocessor is bypassed

Processor Configuration Options

The Cortex-M33 processor has configurable options that you can set during the

implementation and integration stages to match your functional requirements.