Powerful 32-bit Motor Control MCU with built-in differential amplifiers and safety systems.

The RX24U Group features a 32-bit microcontroller ideally suited for dual inverter control with a built-in Floating-Point Unit (FPU) that enables it to easily execute complex inverter control algorithms. The built-in Differential Programmable Gain Amplifier and the provide safety system allow to bring application system cost down.

Products with the operating ambient temperature of 105 °C are also available.

The easy usability of the RX24U is helping our customers to reduce the time to market by reducing software development efforts and system design by providing a ready-to-go motor control solution, including software and hardware design examples.


Key Features:

Pin Count 100-pins 144-pins

Part Name

(x : Code for flash memory size)

CPU Core RXv2 Core
Max. Frequency 80 MHz
Memory Program Flash 256 KB (x=B) / 384 KB (x=C) / 512 KB (x=E)
Data Flash 8 KB
Clock Main Clock Max. 80 MHz (External clock 1 to 20 MHz)
High Speed On-chip Oscillator 32MHz / 64MHz
Low Speed On-chip Oscillator 4 MHz
PLL Input frequency : 4 to 12.5 MHz (Selectable from x 4 to x 15.5)
On-Chip Oscillator for IWDT 15 kHz
Interrupt External 9
DMA Data Transfer Controller (DTCa) Supported
I/O Port Input / Output 79 110
Input Only 1 1
Open Drain Output 61 90
5 V Tolerant 2 2
Timers 16-bit Multi-function Timer Pulse Unit 3 (MTU3d) 9 channels
16-bit General Purpose PWM Timer (GPTB) 4 channels
Port Output Enable 3 POE0#, POE4#, POE8#, POE10#, POE11#, POE12#
8-bit Timers (TMR) 2 channels x 4 units
16-bit Compare Match Timer (CMT) 2 channels x 2 units
Independent Watchdog Timers 14-bit x 1 channel
Communication Interface Serial Communication Interface (SCIg) 4 channels 6 channels
I2C Bus Interface (RIICa) 1 channel
Serial Peripheral Interface (RSPIb) 1 channel
CAN Interface (RSCAN) 1 channel
Analog 12-bit A/D Converter 5 channels x 2 units (Of the high precision 4 channels x 2 units) High precision 10 channels x 1unit 5 channels x 2 units (Of the high precision 4 channels x 2 units) High precision 12 channels x 1unit
3 channels simultaneous sampling function 1unit
Differential Programmable Gain Amplifier 4 channels (1 channel for 1 shunt control + 3 channels for 3 shunt control)
Comparators (Comparator C) 4 channels
D/A Converter 8-bit x 2 channels
Safety Functions Memory Protection, Register Write Protection, CRC, Main clock oscillation stop detection, Clock frequency accuracy circuit, Data operation circuit etc.
Supply Voltage 2.7 to 5.5 V @ 80 MHz
Operating Ambient Temperature

-40 to 85 ℃ (R5F524UxADyy)

-40 to 105 ℃ (R5F524UxAGyy)

(Note) x=Code for flash memory size, yy=Code for package, pin-count and pin-pitch

Package LFQFP 14 x 14 mm, 0.5 mm pitch LFQFP 20 x 20 mm, 0.5 mm pitch

Pin Count / Memory Size Lineup:

Program Flash



Block Diagram:

You can find an explanation of orderable part numbers here.

Resources for Software and Hardware

Title Description
My Renesas Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.


Software Design Support

Title Description
e² studio This integrated development environment (IDE) is based on the popular combination of the open-source Eclipse IDE and its CDT plug-in that enables C/C++ language development.
CS+ This integrated development environment (IDE) can be used for coding, assembly, compiling, and simulation. CS+ is also included with starter kits.
E2 emulator Lite This entry-level on-chip debugging emulator provides functionality equivalent to that of the E1 emulator at a low price.
E2 emulator This on-chip debugging emulator has advanced features that improve the efficiency of development. In addition to the basic functions from debugging to flash programming, this emulator supports hot plug-in and external triggers as standard items. This emulator also helps to reduce development time by downloading at high speeds (compared to the E1 emulator) and the ability to work in combination with various solutions such as the tuning of current drawn by systems under development.
E20 emulator This on-chip debugging emulator has enhanced debugging facilities such as large-capacity tracing and real-time RAM monitoring when used in combination with RX600 and RX700 MCUs (this emulator provides debugging functionality equivalent to that of the E1 emulator for other MCUs).
E1 emulator This on-chip debugging emulator is a standard model which provides basic debugging functions (production is to be discontinued at the end of December 2019).


Hardware Design Support

Title Description
Resonator Information Please search for your resonator on its manufacturer's site linked below. If you require optimal oscillation circuit constants for your particular system, please ask the manufacturer of the oscillator.

For Main clock resonator :
KYOCERA: Click here for RX24U oscillation evaluation result.
Murata Manufacturing: For IC Manufacturer, select Renesas Electronics, and enter R5F524U into the IC Part Number search box.
You can filter the sample codes and application notes that are displayed using the below filters.

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