Renesas R5F51118ADFK#1A

Overview

R5F51118ADFK#1A 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, 14-channel 12-bit ADC, dual 8-bit DAC, RTC, and ELC/DTC peripherals - deployed in industrial HMI, USB-connected sensor gateways, and low-power embedded control systems.

For engineers reviewing the R5F51118ADFK#1A datasheet, R5F51118ADFK#1A pinout, R5F51118ADFK#1A application, or R5F51118ADFK#1A equivalent, this page delivers verified specifications, package mapping to PLQP0064GA-A (14 × 14 mm, 0.8 mm pitch), functional pin roles, real-world use cases, and validated alternative parts for design-in decisions.

Technical Context

The R5F51118ADFK#1A implements a CISC Harvard-architecture RX core with five-stage pipeline, variable-length instructions, and 64-bit accumulator for single-cycle 32×32 multiply-accumulate operations. It integrates an Event Link Controller (ELC) enabling direct inter-module triggering without CPU intervention and a Data Transfer Controller (DTC) supporting chain transfers across 82 interrupt sources.

Its clock system includes independent PLL, high-speed on-chip oscillator (32 MHz ±1% over −40 to +85°C), sub-clock (32.768 kHz), and Clock Accuracy Measurement (CAC) circuit for IEC 60730 compliance. Power management supports software standby mode (0.44 μA) with 4.8 μs wake-up and three operating modes (high/middle/low speed).

Key Specifications

Pinout & Package

Package: PLQP0064GA-A - 64-pin LQFP, 14 × 14 mm body, 0.8 mm pitch, exposed pad not present, RoHS-compliant Sn-only termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51118ADFK#1A, R5F51118ADFM#3A offers identical performance in a smaller 0.5 mm pitch LQFP, while R5F51117ADFK#3A reduces flash capacity by 128 KB at lower cost - both retain full USB, RTC, and ELC functionality without architectural compromise.

Availability

R5F51118ADFK#1A is available at Aetrix Electronics and suitable for industrial HMI, USB-connected sensor gateways, and smart appliance control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F51118ADFK#1A 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 RX111 Group targets cost-sensitive, low-power embedded applications demanding USB connectivity, rich analog integration, and functional safety support - designed for rapid development of certified industrial and consumer control systems.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51118ADFK#1A?

The R5F51118ADFK#1A operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its RX CPU core features a five-stage pipeline, 64-bit accumulator for single-cycle 32×32 multiply-accumulate operations, and variable-length instruction encoding - enabling deterministic real-time execution for motor control and USB protocol stacks within the R5F51118ADFK#1A.

Does the R5F51118ADFK#1A support USB host functionality, and what modes are implemented?

Yes, the R5F5118ADFK#1A integrates a 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) modes, isochronous transfers for time-critical data, and Battery Charging (BC) 1.2 detection - all implemented in hardware without external PHY, making the R5F51118ADFK#1A suitable for USB peripheral docking and firmware update interfaces.

What are the analog capabilities of the R5F51118ADFK#1A, and how are they applied in practice?

The R5F51118ADFK#1A includes a 14-channel 12-bit ADC with 1.0 μs minimum conversion time, dual 8-bit DACs (DA0/DA1), and an integrated temperature sensor. These are used together - for example, the DACs calibrate sensor references, the ADC measures feedback signals, and the temperature sensor compensates for thermal drift - all coordinated via ELC-triggered conversions in the R5F51118ADFK#1A.

How does the Event Link Controller (ELC) enhance real-time performance in the R5F51118ADFK#1A?

The ELC in the R5F51118ADFK#1A allows 35 peripheral event sources (e.g., timer match, GPIO edge) to directly trigger actions in other modules (e.g., ADC start, DAC update, PWM reload) without CPU or interrupt latency. This enables sub-microsecond deterministic responses - such as initiating an ADC conversion precisely on a motor phase timer match - significantly improving control loop timing integrity in the R5F51118ADFK#1A.

What low-power modes are supported by the R5F51118ADFK#1A, and what is the lowest achievable current?

The R5F51118ADFK#1A supports three low-power modes: sleep, deep sleep, and software standby. In software standby mode, it achieves 0.44 μA typical current while retaining RTC, IWDT, and RAM contents - enabling multi-year battery operation in metering and sensor-edge applications. Wake-up occurs in 4.8 μs via external interrupt or RTC alarm, ensuring responsive recovery in the R5F51118ADFK#1A.