System Processor; Introduction - Silicon Laboratories EFR32xG14 Wireless Gecko Reference Manual

3. System Processor

0 1 2 3 4
CM4 Core
Hardware divider
Control Logic
Floating-Point Unit
Instruction Interface
NVIC Interface

3.1 Introduction

The ARM Cortex-M4 32-bit RISC processor provides outstanding computational performance and exceptional system response to inter-
rupts while meeting low cost requirements and low power consumption.
The ARM Cortex-M4 implemented is revision r0p1.
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32-bit ALU
Single cycle
32-bit multiplier
DSP extensions
Thumb & Thumb-2
Decode
Data Interface
Memory Protection Unit
Quick Facts
What?
The industry leading Cortex-M4 processor from
ARM is the CPU in the EFR32 devices.
Why?
The ARM Cortex-M4 is designed for exceptionally
short response time, high code density, and high 32-
bit throughput while maintaining a strict cost and
power consumption budget.
How?
Combined with the ultra low energy peripherals
available in EFR32 devices, the Cortex-M4 process-
or's Harvard architecture, 3 stage pipeline, single cy-
cle instructions, Thumb-2 instruction set support,
and fast interrupt handling make it perfect for 8-bit,
16-bit, and 32-bit applications.
Reference Manual
System Processor
Rev. 1.1 | 37