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R5F52315ADFL#30

RENR5F52315ADFL#30

Renesas Electronics Corporation
RXv2 RX231 Microcontroller IC 32-Bit 54MHz 128KB (128K x 8) FLASH 48-LFQFP (7x7)
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Overview

The R5F52315ADFL#30 is a 32-bit microcontroller from the Renesas RX231 group, featuring an RXv2 core with a built-in FPU and DSP instructions running at up to 54MHz. It is specifically engineered for low-power operation and high-sensitivity capacitive touch applications, offering 128KB of Flash and 32KB of RAM in a compact 48-pin LFQFP package.

Why Choose This Part

This MCU provides a significant performance boost over standard 8/16-bit controllers with its 54MHz RXv2 core and floating-point unit while maintaining low current draw. The integration of 8KB of dedicated Data Flash for EEPROM emulation and a USB OTG controller simplifies BOM requirements for small-form-factor designs.

Applications

Capacitive Touch Interfaces
Utilizes the integrated Capacitive Touch Sensing Unit (CTSU) for robust, high-sensitivity touch keys and sliders in home appliances and industrial panels.
Battery-Powered IoT Nodes
Leverages the ultra-low power consumption modes and wide 1.8V to 5.5V operating range for extended life in remote sensing applications.
Small Industrial Controllers
Employs the DSP instructions and FPU for local signal processing and the Event Link Controller (ELC) to reduce CPU overhead during peripheral interactions.
Secure Portable Devices
Uses the integrated true random number generator and memory protection unit for basic security and system reliability in handheld equipment.

Key Specifications

Speed 54MHz
RAM Size 32K x 8
Core Size 32-Bit
EEPROM Size 8K x 8
Peripherals Capacitive Touch, DMA, LVD, POR, PWM, WDT
Connectivity I2C, IrDA, SCI, SPI, SSI, USB OTG
Mounting Type Surface Mount
Number of I/O 30
Core Processor RXv2
Package / Case 48-LQFP
Data Converters A/D 8x12b
Oscillator Type Internal
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 48-LFQFP (7x7)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Engineers can begin development using the Renesas e2 studio IDE or IAR Embedded Workbench for RX. Hardware evaluation is best performed with the Renesas Target Board for RX231 or the RSK (Renesas Starter Kit) series, utilizing an E2 or E2 Lite emulator for on-chip debugging.

Also Consider

STM32L431CBT6 STMicroelectronics - Offers similar low-power 32-bit performance with an ARM Cortex-M4 core and slightly higher clock speed.
R5F52316ADFL#30 RENRenesas Electronics - Direct upgrade within the same RX231 family providing 256KB of Flash and 64KB of RAM.
ATSAMD21G18A-AU MCHPMicrochip Technology - Alternative 32-bit MCU with capacitive touch support and USB, though lacking a hardware FPU.