Renesas R5F51305AGFL#10

Overview

R5F51305AGFL#10 from Renesas Electronics is a 32-bit RX CPU-based microcontroller optimized for low-power, touch-enabled consumer and industrial applications. It operates at up to 32 MHz (50 DMIPS), integrates 128 KB on-chip flash, 16 KB SRAM, 8 KB data flash, dual 8-bit D/A converters, 12-bit A/D converter with 17 channels, capacitive touch sensing unit (CTSU) supporting up to 24 keys, and real-time clock - all powered from a single 1.8–5.5 V supply.

For engineers reviewing the R5F51305AGFL#10 datasheet, R5F51305AGFL#10 pinout, R5F51305AGFL#10 application, or R5F51305AGFL#10 equivalent, this MCU delivers verified IEC60730-compliant safety features, event-link controller (ELC) for interrupt-free peripheral coordination, low-power timer (LPT) active in software standby mode (0.37 µA), and hardware-accelerated CRC calculation - critical for firmware integrity in white goods and human-interface designs.

Technical Context

The R5F51305AGFL#10 implements the 32-bit RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code. It supports 115 interrupt vectors, 16-level priority, and fast interrupt response with dedicated on-chip debugging (FINE interface).

Its clock system includes high-speed on-chip oscillator (32 MHz ±1%), sub-clock (32.768 kHz), PLL (4–8 MHz input), and independent IWDT oscillator (15 kHz), all managed via Clock Frequency Accuracy Measurement Circuit (CAC). Power management enables three low-power modes, with 4.8 µs wake-up from software standby using LPT or external event triggers.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin LFQFP, 7 mm × 7 mm, 0.5 mm pitch, lead-free, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F51305AGFL#10, R5F51305ADFL#30 trades extended temperature for lower cost, while R5F51306BGFL#30 provides scalable memory without changing PCB layout - both retain identical peripheral sets, ELC functionality, and CTSU capability.

Availability

R5F51305AGFL#10 is available at Aetrix Electronics and suitable for home appliance control panels, industrial sensor nodes, and smart thermostat interfaces requiring stable component supply across automotive-adjacent and industrial temperature ranges.

Supply support for R5F51305AGFL#10 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX130 Group targets cost-sensitive, low-power, touch-enabled applications - designed to replace discrete touch controllers and legacy 8/16-bit MCUs with integrated safety, analog, and human-interface capabilities.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51305AGFL#10?

The R5F51305AGFL#10 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance using the 32-bit RXv1 CPU core. Its 5-stage pipeline, variable-length instruction set, and on-chip multiplier/divider enable efficient execution of real-time control and signal processing tasks without external acceleration. This performance level is sustained across the full 1.8–5.5 V supply range.

Does the R5F51305AGFL#10 support capacitive touch sensing, and how many keys can it handle in its 48-pin package?

Yes, the R5F51305AGFL#10 integrates a Capacitive Touch Sensing Unit (CTSU) supporting up to 24 keys in the PLQP0048KB-B 48-pin package. It uses self-capacitance measurement on dedicated TS0–TS23 pins and includes hardware-based noise cancellation, automatic drift compensation, and proximity detection - eliminating the need for external touch controller ICs in space-constrained designs.

What low-power features does the R5F51305AGFL#10 offer, and what is its lowest standby current?

The R5F51305AGFL#10 offers three low-power modes, including software standby with active Low Power Timer (LPT). In software standby mode, it draws just 0.37 µA while maintaining RTC and LPT operation - enabling battery-backed wake-up events every 2 ms to 2.1 s. Wake-up time from this state is 4.8 µs, ensuring rapid responsiveness to external triggers or scheduled intervals.

Is the R5F51305AGFL#10 qualified for IEC60730 Class B safety compliance, and which hardware features support it?

Yes, the R5F51305AGFL#10 includes hardware-assisted IEC60730 Class B compliance features: Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT) with dedicated oscillator, A/D converter self-diagnostic and analog input disconnection detection, RAM test assistance via Data Operation Circuit (DOC), and voltage monitoring with configurable LVD levels - all documented in Renesas' functional safety manual R01US0094EJ0200.

What communication interfaces are available on the R5F51305AGFL#10, and how many channels does each support?

The R5F51305AGFL#10 provides SCI (3 channels), I²C bus interface (1 channel, up to 400 kbps), RSPI (1 channel, up to 16 Mbps), and Remote Control Signal Receiver (REMC, 2 channels). All interfaces support event linking via ELC for autonomous operation, and SCI includes asynchronous, clock-synchronous, and smart-card modes - enabling flexible connectivity to displays, sensors, wireless modules, and IR receivers without CPU overhead.