Renesas R5F51118ADLF#UA

Overview

R5F51118ADLF#UA from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 512 KB on-chip flash, 64 KB SRAM, 8 KB data flash, USB 2.0 full-speed host/function/OTG, 12-bit A/D converter (14 channels), 8-bit D/A converter (2 channels), RTC with calendar mode, and operation from −40°C to +85°C. It targets embedded control in industrial sensors and USB-connected edge devices.

For engineers reviewing the R5F51118ADLF#UA datasheet, R5F51118ADLF#UA pinout, R5F51118ADLF#UA application, or R5F51118ADLF#UA equivalent, key selection criteria include its 64-pin WFLGA (5 × 5 mm, 0.5 mm pitch) package, integrated USB transceiver with BC support, dual 8-bit DAC outputs, and software standby mode recovery time of 4.8 μs - critical for low-power USB peripheral designs.

Technical Context

The R5F51118ADLF#UA 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 peripherals include an Event Link Controller (ELC) that enables direct module-to-module triggering without CPU intervention, and a Data Transfer Controller (DTC) supporting chain transfer across four modes.

It integrates dedicated clock domains: ICLK (system, up to 32 MHz), PCLK (peripherals, up to 32 MHz), and FCLK (FlashIF, up to 32 MHz), each independently configurable. The high-speed on-chip oscillator delivers 32 MHz ±1% accuracy over −20°C to +85°C, eliminating need for external crystal in many applications.

Key Specifications

Pinout & Package

Packaged in a 64-pin WFLGA (PWLG0064KA-A), the R5F51118ADLF#UA uses a 5 × 5 mm footprint with 0.5 mm pitch and bottom-side solder balls for compact PCB layout and thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51118AGLF#UA, the R5F51118ADLF#UA trades extended temperature rating for lower cost and standard calibration; compared with R5F51116ADLF#UA, it doubles flash and RAM capacity for complex USB protocol stacks or larger data buffers - critical for dual-role OTG implementations.

Availability

R5F51118ADLF#UA is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, smart energy meter interfaces, and embedded USB firmware updaters requiring stable component supply and long-term manufacturability.

Supply support for R5F51118ADLF#UA 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 industrial, automotive, and IoT markets.

The RX111 Group - including the R5F51118ADLF#UA - was designed for cost-sensitive, USB-enabled embedded applications demanding low power, rich analog integration, and real-time responsiveness in compact form factors.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51118ADLF#UA?

The R5F51118ADLF#UA 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 instruction execution for efficient real-time control. The 32 MHz clock is generated by the high-speed on-chip oscillator (±1% accuracy from −20°C to +85°C), eliminating dependency on external crystals in many use cases. This performance level supports USB protocol stack execution, multi-channel sensor fusion, and deterministic motor control loops.

Does the R5F51118ADLF#UA support USB On-The-Go (OTG) functionality?

Yes, the R5F5118ADLF#UA integrates a full-featured USB 2.0 host/function/OTG module compliant with USB 2.0 specification. It supports full-speed (12 Mbps) and low-speed (1.5 Mbps) operation, isochronous transfers, and Battery Charging (BC) detection. The on-chip transceiver includes USB0_DP and USB0_DM pins, USB0_ID for Mini-AB connector detection, and USB0_VBUS monitoring - enabling true dual-role operation without external PHY components. OTG session initiation and role swapping are handled in firmware using Renesas' USB middleware.

What are the analog capabilities of the R5F51118ADLF#UA, and how are they configured?

The R5F51118ADLF#UA includes a 12-bit successive-approximation A/D converter with up to 14 input channels (AN000–AN015), minimum 1.0 μs conversion time at 32 MHz ADCLK, and double-trigger mode for motor control redundancy. It also provides two 8-bit D/A converters (DA0, DA1) with 0–VCC output range. Analog references are configurable via AVCC0/AVSS0 and VREFH0/VREFL0 pins. The A/D converter supports scan, group scan, and external trigger (ADTRG0#) modes, and its results can be linked to MTU2 timers or ELC events for synchronized sampling.

What low-power modes does the R5F51118ADLF#UA support, and what is its software standby current?

The R5F51118ADLF#UA supports three low-power modes: sleep, deep sleep, and software standby. In software standby mode, it draws just 0.44 μA (typical) while retaining SRAM and register contents. Wake-up occurs in 4.8 μs via RTC alarm, external interrupt, or USB resume signal. The mode disables CPU, flash, and most peripherals while keeping the sub-clock oscillator and RTC active - ideal for USB suspend/resume scenarios and battery-powered endpoints requiring rapid responsiveness.

What is the package type and pin count of the R5F51118ADLF#UA, and how does it compare to other RX111 variants?

The R5F51118ADLF#UA uses the PWLG0064KA-A package: a 64-pin WFLGA (wafer-level chip-scale package) measuring 5 × 5 mm with 0.5 mm pitch. This compact footprint supports high-density layouts and improved thermal performance versus QFP alternatives. Unlike PLQP0064KB-A (10 × 10 mm LFQFP) or PLQP0064GA-A (14 × 14 mm LQFP) variants, the WFLGA variant maintains identical peripheral functionality - including all 14 A/D channels, 2 DACs, USB, and MTU2 - making it a drop-in replacement where board space is constrained.