Renesas R4F20115NFA#U0

Overview

R4F20115NFA#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/Tiny family, designed for embedded control applications requiring integrated peripherals, low power consumption, and deterministic real-time operation. It features 128 KB on-chip flash memory, 8 KB RAM, a 20 MHz max CPU clock, 57 I/O pins, and supports CAN 2.0B interface via dedicated controller.

For engineers reviewing the R4F20115NFA#U0 datasheet, R4F20115NFA#U0 pinout, R4F20115NFA#U0 application, or R4F20115NFA#U0 equivalent, key selection criteria include its H8S/20115 group-specific peripheral set (SCI3, IIC2, SSU, WDT, LVD), 3.3 V operation, and QFP-100 package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The R4F20115NFA#U0 implements the H8S/2000 CPU core with 24-bit address space, supporting advanced mode operation and 16-bit data paths. Its system architecture integrates a Clock Pulse Generator (CPG) with PLL, Bus Controller (BSC), and Peripheral I/O Mapping Controller (PMC) for flexible memory and peripheral addressing.

Peripheral subsystems include three serial interfaces (SCI3, IIC2, SSU), a 16-bit timer with compare match and interval count functions, watchdog timer (WDT), low-voltage detection (LVD), and event link controller (ELC) for hardware-triggered transfers-enabling deterministic response in motor control and sensor interface applications.

Key Specifications

Pinout & Package

Package: 100-pin Low-profile Quad Flat Package (LQFP), 14 mm × 14 mm body, 0.5 mm lead pitch, exposed thermal pad (non-electrical), JEDEC MS-026AC compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R4F20115NFA#U0, R4F20215NFA#U0 offers expanded memory and peripheral density for feature-rich upgrades, while R5F566TEADFP delivers architectural advancement for computationally intensive real-time control-making R4F20115NFA#U0 optimal for cost-sensitive, proven industrial control deployments.

Availability

R4F20115NFA#U0 is available at Aetrix Electronics and suitable for industrial motor control, building automation sensor hubs, automotive body electronics, and factory floor PLC I/O terminals requiring stable component supply and long-term lifecycle assurance.

Supply support for R4F20115NFA#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8S/Tiny series-including R4F20115NFA#U0-is engineered for cost-effective, deterministic real-time control in resource-constrained embedded systems where reliability, peripheral integration, and industrial temperature operation are critical.

FAQ

What is the maximum operating frequency of the R4F20115NFA#U0?

The R4F20115NFA#U0 operates at a maximum CPU clock frequency of 20 MHz, derived from an internal PLL fed by an external crystal (1–20 MHz) or oscillator. This frequency enables sub-50 ns instruction cycles for time-critical control tasks. The R4F20115NFA#U0's CPG module supports multiple clock sources and dividers to balance performance and power consumption across different operational modes.

Does the R4F20115NFA#U0 include a CAN controller?

Yes, the R4F20115NFA#U0 integrates a full CAN 2.0B-compliant controller supporting both standard and extended frame formats, with message objects, acceptance filtering, and error handling. It requires an external CAN transceiver (e.g., SN65HVD230) for physical layer compliance. This built-in controller eliminates the need for discrete CAN interface ICs in body control and industrial network nodes.

What package type and pin count does the R4F20115NFA#U0 use?

The R4F20115NFA#U0 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. It provides 57 general-purpose I/O pins, plus dedicated power, ground, clock, reset, and debug interface pins. This package is RoHS-compliant and qualified for reflow soldering per J-STD-020 standards.

What is the on-chip memory configuration of the R4F20115NFA#U0?

The R4F20115NFA#U0 includes 128 KB of on-chip flash memory for program storage and 8 KB of SRAM for data and stack operations. Flash supports in-application programming (IAP) and sector erase, enabling field firmware updates. No external memory interface is provided-designs must fit within these on-chip resources.

Is the R4F20115NFA#U0 qualified for industrial temperature operation?

Yes, the R4F20115NFA#U0 is rated for operation from −40°C to +85°C ambient temperature and classified as a "Standard" quality grade device per Renesas' product grading system. It is intended for industrial equipment, office automation, and communications infrastructure-not for automotive safety-critical or aerospace applications without additional qualification.