Renesas R4F20115RNFA#V0

Overview

R4F20115RNFA#V0 from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/Tiny series, designed for embedded control in resource-constrained industrial and consumer systems. It integrates 128 KB on-chip flash memory, 8 KB RAM, a 24 MHz max CPU clock, 32-channel 10-bit ADC, and supports CAN 2.0B interface via integrated CAN controller. It operates across –40°C to +85°C and targets motor control, sensor interfacing, and appliance management.

For engineers reviewing the R4F20115RNFA#V0 datasheet, R4F20115RNFA#V0 pinout, R4F20115RNFA#V0 application, or R4F20115RNFA#V0 equivalent, key selection criteria include its H8S/20115R-compatible instruction set, integrated CAN controller with message buffers, 32-channel ADC resolution and sampling rate, and support for low-power STOP/STANDBY modes in compact 100-pin LQFP packaging.

Technical Context

The R4F20115RNFA#V0 implements the H8S/2000 CPU core with 16-bit data bus and 24-bit address space, supporting both advanced and normal operating modes. Its peripheral set includes a 3-channel 16-bit timer (with input capture/output compare), 2-channel serial communication interface (SCI) with UART/CLK-synchronous modes, and an I²C-compatible interface (IIC2).

It features a programmable clock pulse generator (CPG) with internal high-speed on-chip oscillator (HOCO), PLL circuit for frequency multiplication, and multiple power-down modes controlled via LPCR registers. The device uses a dedicated interrupt controller (INT) with 10 priority-level registers and supports up to 128 interrupt sources including external IRQ pins and peripheral events.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R4F20115RNFA#V0, R4F20215RNFA#V0 offers higher memory capacity while maintaining identical peripheral sets and pinout-enabling drop-in firmware upgrades. R5F565NEADFP represents a generational shift toward 32-bit performance, connectivity, and security, requiring PCB redesign but delivering scalable architecture for evolving system requirements.

Availability

R4F20115RNFA#V0 is available at Aetrix Electronics and suitable for motor control, sensor hub, smart appliance UI, and automotive BCM subsystems requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.

Supply support for R4F20115RNFA#V0 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8S/Tiny series-including R4F20115RNFA#V0-is engineered for cost-sensitive, real-time embedded control applications demanding high integration, low power, and proven field reliability in industrial and consumer equipment.

FAQ

What is the maximum operating frequency of the R4F20115RNFA#V0?

The R4F20115RNFA#V0 supports a maximum CPU clock frequency of 24 MHz, achievable via internal PLL multiplication of the on-chip high-speed oscillator (HOCO) or external crystal input. This frequency enables 16 MIPS throughput for real-time control tasks while maintaining low dynamic power consumption in the 100-pin LQFP package.

Does the R4F20115RNFA#V0 include a built-in CAN controller?

Yes, the R4F20115RNFA#V0 integrates a full CAN 2.0B-compliant controller with 15 message buffers, automatic retransmission, and error confinement logic. It requires an external CAN transceiver (e.g., TJA1042) connected to the dedicated CANTX/CANRX pins to complete the physical layer-no additional protocol IC is needed for basic CAN messaging.

What is the ADC resolution and channel count supported by the R4F20115RNFA#V0?

The R4F20115RNFA#V0 features a 10-bit successive-approximation ADC with 32 configurable input channels multiplexed across ports P1–P4. Conversion time is 1.2 μs per sample, and scan mode allows automatic sequential conversion of all enabled channels triggered by software, timer, or external event-reducing CPU intervention in sensor acquisition.

Is the R4F20115RNFA#V0 pin-compatible with other H8S/201xxR devices?

Yes, the R4F20115RNFA#V0 shares identical pin assignment, electrical characteristics, and package (100-pin LQFP) with other members of the H8S/201xxR group-including R4F20103RNFA#V0 and R4F20123RNFA#V0-enabling hardware reuse across variants differing only in memory size and peripheral enablement.

What power-saving modes does the R4F20115RNFA#V0 support?

The R4F20115RNFA#V0 supports three low-power modes: HALT (CPU stopped, peripherals active), STOP (CPU and most peripherals halted, RAM retained), and STANDBY (all clocks stopped except RTC, lowest current draw). In STOP mode, it achieves 1.2 μA typical current with wake-up via IRQ or RTC alarm-critical for battery-operated edge nodes.