Renesas RA Series Quick Design Guide

Renesas RA Family RA4 Quick Design Guide
R01AN5988EU0100 Rev.1.00 Page 34 of 51
Jul.21.21
Figure 26. MPU Setup for RA4M1 (Arm Cortex-M4 core) Using Renesas FSP Configurator
Note: MPU settings must be handled carefully to prevent mistakes that may result in blocking accesses to
an MCU region.
8.5 Restriction on Endianness
Memory space containing instruction codes must be little-endian to execute code on the Arm Cortex-M core.
9. Register Write Protection
The register write protection function protects important registers from being overwritten because of software
errors. The registers to be protected are set with the Protect Register (PRCR). Table 14 lists the association
between the PRCR bits and the registers to be protected.
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
PRKEY[7:0] — — —
PRC4
*1
— PRC3 — PRC1 PRC0
Figure 27. PRCR Register
Note 1. Not present on Arm Cortex-M4 devices.

Renesas RA Series Specifications

General

Brand	Renesas
Model	RA Series
Category	Microcontrollers
Language	English