Renesas R5F51105ADFL#10

Overview

R5F51105ADFL#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 with 1.0 µs conversion time, RTC, and dual SCI + I²C + RSPI interfaces - deployed in industrial sensor nodes requiring low-power, deterministic real-time control.

For engineers reviewing the R5F51105ADFL#10 datasheet, R5F51105ADFL#10 pinout, R5F51105ADFL#10 application, or R5F51105ADFL#10 equivalent, this page delivers verified package mapping (PLQP0048KB-A, 48-pin LFQFP), confirmed peripheral channel counts (2× SCI, 1× RIIC, 1× RSPI, 4× MTU2 channels), supply voltage range (1.8–3.6 V), and functional distinctions vs. alternative RX110 variants.

Technical Context

The R5F51105ADFL#10 implements a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code and single-cycle instruction execution. Its 32-bit RX core integrates a 64-bit accumulator for 32×32-bit multiply-accumulate operations and dedicated hardware for division and barrel shifting.

On-chip clock generation includes high-speed (32 MHz ±1% @ −20 to +85°C), sub-clock (32.768 kHz), and IWDT-dedicated (15 kHz) oscillators, with independent clock domain control for ICLK, PCLK, and FCLK - all configurable via the clock frequency accuracy measurement circuit (CAC) for IEC 60730 compliance.

Key Specifications

Pinout & Package

Package: PLQP0048KB-A, 48-pin Low-Profile Quad Flat Package (LFQFP), 7 × 7 mm body, 0.5 mm lead pitch, exposed pad not specified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51105ADFM#30, R5F51105ADFL#10 saves board area with its 48-pin footprint but sacrifices 16 GPIOs and RSPI slave select flexibility; versus R5F51104ADFL#30, it provides 32 KB extra flash for future firmware expansion without altering layout or firmware porting effort.

Availability

R5F51105ADFL#10 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, home appliance controllers, and portable medical devices requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.

Supply support for R5F51105ADFL#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 manufacturer headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX110 Group is designed for cost-sensitive, low-power embedded applications demanding real-time performance, integrated analog functions, and functional safety support - targeting sensor fusion, appliance control, and metering systems.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51105ADFL#10?

The R5F51105ADFL#10 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its 32-bit RX CPU core features a five-stage pipeline, variable-length instruction set, and 64-bit accumulator - enabling efficient execution of real-time control algorithms and signal processing tasks in resource-constrained environments. The R5F51105ADFL#10 achieves this performance with zero wait-state flash access at full speed.

Which package type and pin count does the R5F51105ADFL#10 use?

The R5F51105ADFL#10 uses the PLQP0048KB-A package: a 48-pin Low-Profile Quad Flat Package measuring 7 × 7 mm with 0.5 mm lead pitch. This package supports 34 general-purpose I/O pins, including 5-V tolerant and open-drain configurable ports, and matches the pinout of other 48-pin RX110 variants such as R5F51104ADFL#30 and R5F51103ADFL#30.

Does the R5F51105ADFL#10 include hardware support for functional safety standards like IEC 60730?

Yes, the R5F51105ADFL#10 integrates multiple hardware features for IEC 60730 Class B compliance, including a clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated 15 kHz oscillator, RAM test assist logic, and dual voltage detection circuits (LVDA). These features enable systematic self-test and fault detection without requiring external components - reducing certification effort for household appliance and industrial control applications.

How many communication interfaces does the R5F51105ADFL#10 support, and what are their key capabilities?

The R5F51105ADFL#10 supports five serial communication channels: two SCI modules (SCI1 and SCI5) supporting asynchronous, clock-synchronous, simple I²C, and simple SPI modes; one RIIC interface compliant with I²C fast-mode (400 kbps) and SMBus; and one RSPI interface capable of 16 Mbps master/slave operation with 128-bit TX/RX buffers. All interfaces share pins via the multi-function pin controller (MPC) for flexible routing.

What are the memory resources and operating voltage range of the R5F51105ADFL#10?

The R5F51105ADFL#10 integrates 128 KB of on-chip flash memory (with no wait states at 32 MHz) and 16 KB of SRAM (also zero-wait-state). It operates from a single 1.8 V to 3.6 V supply, with voltage-dependent maximum frequencies: 8 MHz at 1.8–2.4 V, 16 MHz at 2.4–2.7 V, and 32 MHz at 2.7–3.6 V. The R5F51105ADFL#10 also includes dedicated analog supply pins (AVCC0/AVSS0) and reference inputs (VREFH0/VREFL0) for the 12-bit ADC.