Renesas R5F51103ADLF#U0

Overview

R5F51103ADLF#U0 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 64 KB on-chip flash, 10 KB SRAM, 12-bit A/D converter with 14 channels, RTC, and dual SCI + I²C + RSPI interfaces. It targets low-power industrial sensing and control applications requiring integrated timing, analog acquisition, and serial connectivity.

For engineers reviewing the R5F51103ADLF#U0 datasheet, R5F51103ADLF#U0 pinout, R5F51103ADLF#U0 application, or R5F51103ADLF#U0 equivalent, this page delivers verified package mapping (PWLG0064KA-A, 64-pin WFLGA), confirmed peripheral channel counts, real-time clock calendar mode support, 1.0 µs A/D conversion time, and validated alternative MCU options for cost- or footprint-sensitive designs.

Technical Context

The R5F51103ADLF#U0 implements a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code and single-cycle 32×32-bit multiplication. Its on-chip clock system includes a 32 MHz ±1% high-speed oscillator, sub-clock (32.768 kHz) for RTC, and dedicated IWDT 15 kHz oscillator.

It integrates a 12-bit S12AD A/D converter with double-trigger capability for motor control, MTU2 timer unit with four 16-bit channels supporting input capture/output compare/phase counting, and DTC with chain transfer for autonomous data movement across peripherals without CPU intervention.

Key Specifications

Pinout & Package

Packaged in PWLG0064KA-A: 64-pin WFLGA, 5 mm × 5 mm, 0.5 mm pitch, bottom-exposed thermal pad (to be connected to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51103ADLF#U0, the R5F51103ADFM#30 offers identical functionality in a larger QFP package for easier prototyping, while R5F51103ADFL#30 trades I/O and A/D channel count for a smaller 48-pin footprint-neither is pin-compatible, but both share the same instruction set and peripheral register map.

Availability

R5F51103ADLF#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering interfaces, home appliance controllers, and motor drive feedback units requiring stable component supply across extended product lifecycles.

Supply support for R5F51103ADLF#U0 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 RX110 Group, including R5F51103ADLF#U0, was designed for cost-sensitive, low-power embedded applications demanding rich analog integration, real-time performance, and functional safety support (IEC 60730).

FAQ

What is the maximum operating frequency and associated performance of the R5F51103ADLF#U0?

The R5F51103ADLF#U0 operates at a maximum frequency of 32 MHz, delivering 50 DMIPS of processing performance. This is achieved through its optimized RX CPU core with five-stage pipeline and single-cycle 32×32-bit multiply capability. The 32 MHz clock is generated by the on-chip high-speed oscillator (±1% accuracy from −20°C to +85°C), eliminating need for external crystal in many applications.

Does the R5F51103ADLF#U0 support real-time clock functionality with calendar mode?

Yes, the R5F51103ADLF#U0 includes a dedicated real-time clock (RTCA) module that supports both calendar count mode (with leap year and 30-second adjustment) and binary count mode. It uses the 32.768 kHz sub-clock oscillator as its timebase and can generate interrupts for alarms, periodic events, or carry conditions-enabling precise timekeeping and wake-up from software standby mode.

How many analog-to-digital converter channels does the R5F51103ADLF#U0 provide, and what is its minimum conversion time?

The R5F51103ADLF#U0 integrates a 12-bit S12AD A/D converter with up to 14 input channels (AN000–AN015). Its minimum conversion time is 1.0 µs per channel when the ADCLK runs at 32 MHz. It also supports double-trigger mode for duplicating conversion results-critical for motor control applications requiring redundant current sampling.

What communication interfaces are integrated into the R5F51103ADLF#U0?

The R5F51103ADLF#U0 integrates five serial communication channels: SCIe ×2 (supporting asynchronous, clock-synchronous, I²C, and SPI modes), SCIf ×1 (with extended serial features), RIIC ×1 (I²C bus interface up to 400 kbps), and RSPI ×1 (SPI master/slave up to 16 Mbps). All interfaces share flexible pin multiplexing via the MPC.

What package type and thermal characteristics apply to the R5F51103ADLF#U0?

The R5F51103ADLF#U0 is supplied in the PWLG0064KA-A package: a 64-pin WFLGA measuring 5 mm × 5 mm with 0.5 mm pitch and an exposed thermal pad. The pad must be connected to VSS for optimal thermal dissipation and EMI performance. This package enables high-density PCB layouts while maintaining industrial-grade thermal reliability.