Renesas R5F51116AGFK#3A

Overview

R5F51116AGFK#3A from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 256 KB on-chip flash, 32 KB SRAM, 8 KB data flash, USB 2.0 full-speed host/function/OTG, 14-channel 12-bit A/D converter (1.0 µs conversion), and dual 8-bit D/A outputs - deployed in industrial HMI, sensor fusion nodes, and USB-connected embedded control systems.

For engineers reviewing the R5F51116AGFK#3A datasheet, R5F51116AGFK#3A pinout, R5F51116AGFK#3A application, or R5F51116AGFK#3A equivalent, key selection criteria include its 64-pin LQFP (PLQP0064GA-A) package, −40 to +105°C extended temperature grade, integrated RTC with calendar mode, ELC-triggered peripheral operation, and IEC 60730-compliant safety features for functional safety-critical designs.

Technical Context

The R5F51116AGFK#3A 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. Its clock system integrates PLL, high-speed (32 MHz ±1%) and low-speed on-chip oscillators, sub-clock (32.768 kHz), and CAC for frequency accuracy monitoring.

Peripheral coordination is managed via Event Link Controller (ELC), enabling direct module-to-module triggering without CPU intervention - critical for low-latency motor control and real-time sensor acquisition. The Data Transfer Controller (DTC) supports chain transfer across four interrupt sources, while the MTU2 provides six 16-bit timer channels with complementary PWM, phase counting, and A/D trigger generation.

Key Specifications

Pinout & Package

Package: PLQP0064GA-A - 64-pin LQFP, 14 × 14 mm body, 0.8 mm pitch, exposed pad not specified, RoHS-compliant Sn terminal finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51116AGFK#3A, the R5F51116AGFM#3A offers identical functionality in a smaller 10 × 10 mm LFQFP, while R5F51115AGFK#3A reduces flash/RAM capacity by 50% - enabling cost optimization where memory headroom is not needed.

Availability

R5F51116AGFK#3A is available at Aetrix Electronics and suitable for industrial HMI panels, USB-connected sensor nodes, and functional safety appliance controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F51116AGFK#3A 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, including R5F51116AGFK#3A, was designed for cost-sensitive, low-power embedded applications demanding USB connectivity, rich analog integration, and functional safety support - especially in white goods, building automation, and portable industrial tools.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51116AGFK#3A?

The R5F51116AGFK#3A 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 set, and 64-bit accumulator - enabling efficient execution of control algorithms and real-time signal processing tasks within the R5F51116AGFK#3A's embedded applications.

Does the R5F51116AGFK#3A support USB On-The-Go (OTG) functionality?

Yes, the R5F51116AGFK#3A integrates a USB 2.0 host/function module that fully supports OTG operation, including BC (Battery Charger) v1.2 detection and isochronous transfers. This enables the R5F51116AGFK#3A to dynamically switch between host and device roles - for example, acting as a USB device when connected to a PC and as a host when reading from a USB flash drive.

What are the analog capabilities of the R5F51116AGFK#3A, and are they available in all package variants?

The R5F51116AGFK#3A includes a 14-channel 12-bit A/D converter with 1.0 µs minimum conversion time and two 8-bit D/A converters. These analog resources are confirmed available only in 64-pin packages such as the R5F51116AGFK#3A (PLQP0064GA-A); 48-pin and smaller variants omit the D/A channels entirely per Table 1.2 of the datasheet.

How does the R5F51116AGFK#3A support functional safety standards like IEC 60730?

The R5F51116AGFK#3A includes hardware features required for Class B compliance: Clock Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT) with dedicated 15 kHz oscillator, voltage detection circuits (LVDA), and RAM test assist functions. These enable runtime self-tests and fault detection - critical for validating safe operation in the R5F51116AGFK#3A's target appliance and industrial control applications.

What low-power modes are available on the R5F51116AGFK#3A, and what is the lowest achievable current draw?

The R5F51116AGFK#3A offers three low-power modes: Sleep, Deep Sleep, and Software Standby. In Software Standby mode, it achieves 0.44 µA typical current draw while retaining RAM content and enabling wake-up via RTC alarm, external interrupt, or USB event - making it ideal for battery-backed applications where the R5F51116AGFK#3A must maintain responsiveness with minimal energy use.