Renesas R5F51105ADFK#10

Overview

R5F51105ADFK#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, 14-channel 12-bit ADC (1.0 µs conversion), RTC, and dual SCI + RIIC + RSPI interfaces. It targets low-power industrial sensing and control applications requiring deterministic real-time response and IEC 60730 compliance.

For engineers reviewing the R5F51105ADFK#10 datasheet, R5F51105ADFK#10 pinout, R5F51105ADFK#10 application, or R5F51105ADFK#10 equivalent, key selection criteria include its −40 to +85°C temperature grade, PLQP0064GA-A 64-pin LQFP (14 × 14 mm, 0.8 mm pitch) package, software standby current of 0.35 μA, and integrated clock accuracy measurement (CAC) for functional safety.

Technical Context

The R5F51105ADFK#10 implements a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code and single-cycle instruction execution. Its RX CPU core includes a 64-bit accumulator for 32×32-bit multiply results and dedicated hardware for division and barrel shifting.

Peripheral integration centers on deterministic real-time operation: MTU2 provides four 16-bit timer channels with input capture, phase counting, and A/D trigger generation; DTC supports chain transfer across four interrupt sources; and IWDT uses a dedicated 15 kHz on-chip oscillator independent of system clocks.

Key Specifications

Pinout & Package

Package: PLQP0064GA-A - 64-pin LQFP, 14 × 14 mm body, 0.8 mm pitch, lead-free (Sn), RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51105ADFK#10, the ADFM#30 offers identical functionality in a smaller 0.5 mm pitch LQFP, while the AD4 variant trades 32 KB flash for lower unit cost - both retain full peripheral compatibility and temperature rating.

Availability

R5F51105ADFK#10 is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance controllers, smart meter interfaces, and motor feedback units requiring stable component supply across extended product lifecycles.

Supply support for R5F51105ADFK#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, and power solutions for automotive, industrial, and IoT markets.

The RX110 Group, including R5F51105ADFK#10, was designed for cost-effective, low-power industrial control and sensing applications demanding functional safety support and rich peripheral integration in compact packages.

FAQ

What is the maximum operating frequency and associated performance of the R5F51105ADFK#10?

The R5F51105ADFK#10 operates at a maximum frequency of 32 MHz, delivering 50 DMIPS of processing performance. This speed is sustained with zero wait states for both flash and SRAM access, enabling deterministic real-time execution. The CPU achieves this through a five-stage pipeline and variable-length instruction encoding, which together reduce code size and improve throughput over traditional architectures.

Does the R5F51105ADFK#10 support IEC 60730 Class B compliance for household appliances?

Yes, the R5F51105ADFK#10 includes hardware features required for IEC 60730 Class B compliance: a clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, and built-in functions to assist RAM testing. These capabilities are documented in the R01DS0202EJ0120 datasheet and reduce the design effort needed to achieve certification in white-goods and HVAC applications.

What package type and dimensions does the R5F51105ADFK#10 use?

The R5F51105ADFK#10 uses the PLQP0064GA-A package: a 64-pin LQFP with 14 × 14 mm body size and 0.8 mm pin pitch. It is lead-free (Sn termination) and RoHS compliant. This package provides robust thermal and mechanical characteristics suitable for industrial reflow processes and offers ample I/O routing flexibility compared to finer-pitch alternatives.

How many communication interfaces does the R5F51105ADFK#10 integrate, and what protocols do they support?

The R5F51105ADFK#10 integrates five communication channels: two SCI modules (SCI1 and SCI5) supporting asynchronous, clock-synchronous, and Smart Card modes; one RIIC interface compatible with I²C and SMBus up to 400 kbps; and one RSPI module supporting master/slave SPI at up to 16 Mbps. All interfaces share multi-function pins configurable via the MPC register.

What are the low-power consumption specifications of the R5F51105ADFK#10 in software standby mode?

In software standby mode, the R5F51105ADFK#10 consumes 0.35 μA typical supply current and recovers to active operation in 4.8 μs. This mode retains SRAM content and allows wake-up via RTC alarm, external interrupt, or IWDT timeout - making it ideal for battery-powered endpoints that require infrequent sensing and long operational life without compromising responsiveness.