Renesas R5F51305ADFN#10

Overview

R5F51305ADFN#10 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 128 KB on-chip flash, 16 KB SRAM, 8 KB data flash, 12-bit A/D converter (17 channels), two 8-bit D/A outputs, capacitive touch sensing (36 channels), and IEC60730-compliant safety functions for industrial control applications.

For engineers reviewing the R5F51305ADFN#10 datasheet, R5F51305ADFN#10 pinout, R5F51305ADFN#10 application, or R5F51305ADFN#10 equivalent, key selection criteria include its 80-pin LFQFP package, 1.8–5.5 V single-supply operation, software standby current of 0.37 µA, 4.8 µs wake-up time, and integrated RTC with calendar mode - all critical for low-power human-interface and appliance control designs.

Technical Context

The R5F51305ADFN#10 implements the RXv1 core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code. It integrates a dedicated low-speed on-chip oscillator (15 kHz) for IWDT, high-speed on-chip oscillator (32 MHz ±1%), and clock frequency accuracy measurement circuit (CAC) for self-diagnostic timing validation.

Its peripheral set includes ELC for event-driven module coordination without CPU intervention, DTC supporting normal/repeat/block transfers triggered by 47 event sources, and MPC enabling flexible I/O function assignment across multiple pins - collectively enabling deterministic real-time response in resource-constrained embedded systems.

Key Specifications

Pinout & Package

Package: PLQP0080KB-B - 80-pin Low-Profile Quad Flat Package, 12 × 12 mm, 0.5 mm pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit MCU applications.

Compared with R5F51305AGFN#30, the R5F51305ADFN#10 offers lower-cost thermal qualification for commercial-grade appliances; compared with R5F51306BDFN#30, it provides optimal memory sizing for cost-sensitive, fixed-function controllers where firmware footprint is stable and predictable.

Availability

R5F51305ADFN#10 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMIs, smart remote controls, and energy monitoring sensor nodes requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R5F51305ADFN#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 automotive, industrial, and IoT markets.

The RX130 Group - including the R5F51305ADFN#10 - was designed for cost-effective, safety-certifiable embedded control in consumer and industrial equipment, emphasizing low-power operation, capacitive touch integration, and IEC60730 compliance.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51305ADFN#10?

The R5F51305ADFN#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 algorithms and signal processing tasks without external acceleration. This performance level is sustained across the full 1.8–5.5 V supply range.

Does the R5F51305ADFN#10 support IEC60730 Class B compliance out of the box?

Yes, the R5F51305ADFN#10 includes hardware-assisted IEC60730 Class B compliance features: self-diagnostic A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated 15 kHz oscillator, RAM test support via Data Operation Circuit (DOC), and analog input disconnection detection. These are documented in the R01DS0273EJ0300 datasheet and require no external components to implement certified safety routines.

How many capacitive touch channels does the R5F51305ADFN#10 support, and what configurations are available?

The R5F51305ADFN#10 integrates a Capacitive Touch Sensing Unit (CTSUa) supporting up to 36 touch channels. It operates in self-capacitance mode (one pin per key, 36-key maximum) or mutual capacitance mode (matrix configuration using 36 pins for up to 324 keys). The CTSU is fully supported in the 80-pin PLQP0080KB-B package and requires no external RC networks - only decoupling capacitor TSCAP to VSS.

What are the low-power capabilities of the R5F51305ADFN#10, and how quickly can it wake from standby?

The R5F51305ADFN#10 offers three low-power modes, with software standby consuming just 0.37 µA while retaining SRAM content and RTC operation. Wake-up from software standby occurs in 4.8 µs - fast enough for responsive touch or interrupt-driven control. The low-power timer (LPT) runs continuously on the 32.768 kHz sub-clock or IWDT-dedicated oscillator, enabling precise timekeeping without waking the CPU.

Which communication interfaces are available on the R5F51305ADFN#10, and how many SCI channels does it support?

The R5F51305ADFN#10 provides up to seven Serial Communications Interface (SCI) channels (SCI0, SCI1, SCI5, SCI6, SCI8, SCI9, SCI12), one I²C bus interface (RIIC), one Serial Peripheral Interface (RSPI), and one Remote Control Signal Receiver (REMC) with dual units. All SCI channels support asynchronous, clock-synchronous, and simple I²C/SPI modes - enabling simultaneous UART debugging, I²C sensor interfacing, and SPI flash communication in a single design.