Renesas R5F51103ADFM#30

Overview

R5F51103ADFM#30 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 64 Kbytes of on-chip flash, 10 Kbytes of SRAM, and integrated peripherals including a 12-bit A/D converter (14 channels), RTC, dual SCI interfaces, I²C, RSPI, MTU2 timers, and independent watchdog timer. It targets low-power industrial sensing and control applications requiring deterministic real-time response and IEC 60730 compliance.

For engineers reviewing the R5F51103ADFM#30 datasheet, R5F51103ADFM#30 pinout, R5F51103ADFM#30 application, or R5F51103ADFM#30 equivalent, key selection criteria include its 64-pin LFQFP (PLQP0064KB-A) package, −40°C to +85°C temperature grade, 1.8–3.6 V supply range, software standby mode (0.35 μA), and support for motor control via double-trigger A/D conversion.

Technical Context

The R5F51103ADFM#30 implements the RXv1 core with CISC Harvard architecture, five-stage pipeline, and variable-length instructions-enabling ultra-compact code and single-cycle instruction execution. Its clock system integrates high-speed (32 MHz ±1%), sub-clock (32.768 kHz), and IWDT-dedicated (15 kHz) oscillators with on-chip frequency accuracy measurement (CAC).

Peripheral integration includes a 4-channel MTU2 timer supporting input capture, PWM, and phase counting; two CMT channels; a 12-bit S12AD converter with 1.0 μs minimum conversion time and double-trigger capability; and three serial interfaces-SCIe (2 channels), SCIf (1 channel), RIIC (1 channel), and RSPI (1 channel, up to 16 Mbps)-all accessible via multi-function pin controller (MPC).

Key Specifications

Pinout & Package

Package: PLQP0064KB-A - 64-pin Low-Profile Quad Flat Package, 10 × 10 mm body, 0.5 mm pitch, lead-free (Sn only), RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51103ADFM#30, the ADLK variant offers identical performance in a smaller 5×5 mm WFLGA package, while the ADNE variant provides the same 48-pin footprint in HWQFN for improved thermal performance-both require pin mapping verification but retain full register-level compatibility.

Availability

R5F51103ADFM#30 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, motor control subsystems, and home appliance safety monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for R5F51103ADFM#30 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The R5F51103ADFM#30 belongs to the RX110 Group-a 32-bit MCU family optimized for ultra-low-power, safety-critical embedded control with integrated IEC 60730 features and real-time determinism.

FAQ

What is the maximum operating frequency and associated performance of the R5F51103ADFM#30?

The R5F51103ADFM#30 operates at a maximum frequency of 32 MHz, delivering 50 DMIPS of processing performance. This is achieved with zero wait-state access to both on-chip flash and SRAM, enabling deterministic real-time execution. The RXv1 CPU core supports single-cycle instruction execution for basic operations and includes a 64-bit accumulator for efficient DSP-like computations-critical for sensor fusion and motor control algorithms running on the R5F51103ADFM#30.

Does the R5F51103ADFM#30 support IEC 60730 functional safety requirements?

Yes, the R5F51103ADFM#30 includes dedicated hardware features for IEC 60730 Class B compliance: an independent watchdog timer (IWDT) driven by a dedicated 15 kHz on-chip oscillator, a clock frequency accuracy measurement circuit (CAC), RAM test assist functions, and voltage monitoring circuits (LVDA). These features are documented in the R5F51103ADFM#30 datasheet and enable certified safety routines without external components-making it suitable for white goods, industrial controls, and medical auxiliary systems.

What package type and pin count does the R5F51103ADFM#30 use?

The R5F51103ADFM#30 uses the PLQP0064KB-A package: a 64-pin Low-Profile Quad Flat Package measuring 10 × 10 mm with 0.5 mm pitch, lead-free (Sn-only) terminations, and RoHS compliance. This package provides 50 general-purpose I/O pins, 14 dedicated A/D input channels, and full access to all integrated peripherals-including dual SCI, I²C, RSPI, MTU2 timers, and RTC-as specified in the R5F51103ADFM#30 pin assignment tables.

How does the R5F51103ADFM#30 manage low-power operation in battery-powered applications?

The R5F51103ADFM#30 supports three low-power modes: sleep, deep sleep, and software standby. In software standby mode, it draws just 0.35 μA while retaining SRAM content and allowing wake-up via RTC alarm, external interrupt, or A/D conversion completion. Recovery time from this state is 4.8 μs. Combined with its 1.8–3.6 V operating range and on-chip voltage monitoring, the R5F51103ADFM#30 enables decade-long battery life in wireless sensor nodes and portable instrumentation.

Can the R5F51103ADFM#30 perform simultaneous A/D conversions for motor control?

Yes, the R5F51103ADFM#30's 12-bit S12AD module supports double-trigger mode, which captures and duplicates A/D conversion results from two channels simultaneously-essential for synchronized current sensing in three-phase motor control. With a minimum conversion time of 1.0 μs per channel at 32 MHz ADCLK, the R5F51103ADFM#30 achieves >100 kHz sampling rates, enabling precise field-oriented control (FOC) loop execution without CPU intervention.