Renesas R5F51101ADLF#U0

Overview

R5F51101ADLF#U0 from Renesas is a 32-bit RX CPU core microcontroller operating at up to 32 MHz (50 DMIPS), featuring 32 KB on-chip flash, 10 KB SRAM, 12-bit A/D converter with 14 channels, RTC, and dual SCI interfaces - deployed in industrial sensor nodes requiring low-power, deterministic real-time control.

For engineers reviewing the R5F51101ADLF#U0 datasheet, R5F51101ADLF#U0 pinout, R5F51101ADLF#U0 application, or R5F51101ADLF#U0 equivalent, key selection criteria include its 64-pin WFLGA package (5 × 5 mm), −40 to +85°C temperature grade, software standby mode (0.35 μA), and integrated IEC 60730 safety support functions.

Technical Context

The R5F51101ADLF#U0 implements a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code and single-cycle instruction execution. Its on-chip clock system includes independent high-speed (32 MHz ±1%) and sub-clock (32.768 kHz) oscillators, plus CAC for frequency accuracy validation.

It integrates a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes triggered by 65 interrupt vectors, and features MTU2 timers with phase counting and input capture, alongside a 14-channel 12-bit A/D converter capable of 1.0 μs conversion time at 32 MHz ADCLK.

Key Specifications

Pinout & Package

Packaged in a 64-pin WFLGA (PWLG0064KA-A), 5 × 5 mm, 0.5 mm pitch, with exposed die pad recommended to be connected to VSS for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51101ADLF#U0, R5F51101ADFM#30 offers identical functionality in a larger, more manufacturable QFP package, while R5F51103ADLF#U0 delivers 2× flash capacity in the same compact WFLGA footprint - enabling scalable design without requalification.

Availability

R5F51101ADLF#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, motor control edge nodes, and home appliance MCUs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F51101ADLF#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX110 Group, including R5F51101ADLF#U0, is designed for cost-sensitive, low-power industrial and consumer applications demanding real-time performance, functional safety support, and compact packaging.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51101ADLF#U0?

The R5F51101ADLF#U0 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its RX CPU core features a five-stage pipeline, variable-length instruction encoding, and single-cycle execution for basic instructions - enabling deterministic real-time response in time-critical applications such as motor control and sensor data acquisition. The R5F51101ADLF#U0 achieves this performance while maintaining ultra-compact code density.

Which package type does the R5F51101ADLF#U0 use, and what are its key mechanical characteristics?

The R5F51101ADLF#U0 uses the PWLG0064KA-A package: a 64-pin WFLGA (Wafer-Level Glass Array) measuring 5 × 5 mm with 0.5 mm pitch and an exposed die pad. This package supports high-density PCB layouts and requires connection of the exposed pad to VSS for optimal thermal dissipation and EMI suppression. The R5F51101ADLF#U0's compact footprint makes it ideal for space-constrained industrial and consumer modules.

Does the R5F51101ADLF#U0 support functional safety standards like IEC 60730?

Yes, the R5F51101ADLF#U0 includes hardware features specifically for IEC 60730 Class B compliance, including a Clock Frequency Accuracy Measurement circuit (CAC), Independent Watchdog Timer (IWDT) with dedicated oscillator, RAM test assist logic, and voltage detection circuits. These integrated capabilities reduce external component count and simplify certification efforts for household appliances and industrial controls - all while maintaining full compatibility with the R5F51101ADLF#U0's standard peripheral set.

How many communication interfaces does the R5F51101ADLF#U0 provide, and what protocols are supported?

The R5F51101ADLF#U0 provides up to five communication channels: two SCI modules (SCI1 and SCI5) supporting asynchronous UART, clock-synchronous, simple I2C, and simple SPI modes; one RIIC interface compliant with I2C and SMBus up to 400 kbps; and one RSPI interface supporting master/slave SPI at up to 16 Mbps. All interfaces are accessible via the R5F51101ADLF#U0's MPC for flexible pin assignment - enabling concurrent multi-protocol connectivity in sensor hubs and gateway devices.

What are the low-power consumption specifications of the R5F51101ADLF#U0 in standby mode?

The R5F51101ADLF#U0 achieves 0.35 μA supply current in software standby mode, with a wake-up time of 4.8 μs - among the lowest in its class for 32-bit MCUs with integrated RTC and A/D. It also supports deep sleep and sleep modes, and its power supply operates from 1.8 to 3.6 V with dynamic voltage-frequency scaling. This ultra-low quiescent current makes the R5F51101ADLF#U0 especially suitable for battery-powered industrial sensors and energy-harvesting applications.