Renesas R5F51116ADFL#3A

Overview

R5F51116ADFL#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, 14-channel 12-bit A/D converter (1.0 µs conversion), dual 8-bit D/A outputs, USB 2.0 full-speed host/function/OTG, and RTC - deployed in industrial sensor nodes and embedded HMI control units.

For engineers reviewing the R5F51116ADFL#3A datasheet, R5F51116ADFL#3A pinout, R5F51116ADFL#3A application, or R5F51116ADFL#3A equivalent, key selection criteria include its 48-pin LFQFP (PLQP0048KB-A) package, −40°C to +85°C temperature grade, integrated E2 DataFlash with 1M erase/write cycles, and hardware event linking (ELC) for low-latency peripheral coordination without CPU wake-up.

Technical Context

The R5F51116ADFL#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 on-chip oscillator (32 MHz ±1%), sub-clock (32.768 kHz), and CAC for real-time frequency accuracy monitoring.

Peripheral integration includes MTU2 (6-channel 16-bit timer with complementary PWM and phase counting), DTC (four transfer modes triggered by interrupts), ELC (35-event direct module linking), and USB 2.0 controller supporting isochronous transfers and BC (Battery Charger) detection - all synchronized to independent ICLK/PCLK/FCLK domains.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (PLQP0048KB-A), 7 × 7 mm, 0.5 mm pitch, exposed pad optional - optimized for compact industrial PCB layouts with thermal and EMI robustness.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51116ADFL#3A, R5F51116ADFM#3A offers greater I/O and RTC capability in a larger package, while R5F51115ADFL#3A provides identical footprint and peripherals at lower memory density - enabling scalable design reuse across product tiers without PCB redesign.

Availability

R5F51116ADFL#3A is available at Aetrix Electronics and suitable for industrial sensor nodes, embedded HMI controllers, USB peripheral gateways, and IEC 60730-certified appliance control requiring stable component supply and long-term manufacturability.

Supply support for R5F51116ADFL#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 industrial, automotive, and IoT markets.

The RX111 Group, including R5F51116ADFL#3A, was designed for cost-sensitive, low-power embedded applications demanding USB connectivity, rich analog integration, and functional safety support - targeting industrial automation and smart appliances.

FAQ

What is the maximum operating frequency and core performance of the R5F51116ADFL#3A?

The R5F51116ADFL#3A operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its 32-bit RX CPU core features a five-stage pipeline, variable-length instruction encoding, and a 64-bit accumulator for single-cycle 32×32 multiply-accumulate operations - enabling deterministic real-time execution in resource-constrained embedded systems.

Does the R5F51116ADFL#3A support USB host functionality?

Yes, the R5F51116ADFL#3A integrates a USB 2.0 host/function/OTG module compliant with USB 2.0 specification, supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) modes. It includes on-chip transceiver, isochronous transfer capability, and Battery Charger (BC) detection - allowing it to enumerate as a USB host for HID or mass-storage class devices when configured accordingly.

What are the memory resources available on the R5F51116ADFL#3A?

The R5F51116ADFL#3A includes 256 KB of on-chip flash memory (programmable at 1.8 V, zero wait states at 32 MHz), 32 KB of SRAM (zero wait states), and 8 KB of data flash rated for 1,000,000 erase/write cycles. The data flash supports Background Operation (BGO), enabling concurrent code execution and non-volatile parameter storage without CPU interruption.

How does the Event Link Controller (ELC) enhance real-time responsiveness in the R5F51116ADFL#3A?

The ELC in the R5F51116ADFL#3A enables direct hardware-level linking of 35 peripheral events - such as MTU2 timer overflow or external pin interrupt - to trigger actions like A/D conversion start or PWM duty cycle update without CPU involvement or interrupt latency. This allows the CPU to remain in low-power software standby mode while maintaining precise, deterministic peripheral coordination.

What is the operating temperature range and supply voltage specification for the R5F51116ADFL#3A?

The R5F51116ADFL#3A is rated for industrial operation from −40°C to +85°C ('D' grade). It accepts a single supply voltage from 1.8 V to 3.6 V, with frequency scaling tied to voltage: 8 MHz at 1.8–2.4 V, 16 MHz at 2.4–2.7 V, and full 32 MHz operation above 2.7 V. Supply current is 3.2 mA (typ.) at 32 MHz, dropping to 0.44 µA in software standby mode.