Renesas R5F100EHGNA#U0

Overview

R5F100EHGNA#U0 from Renesas is a 40-pin HWQFN-packaged 16-bit RL78/G13 microcontroller with 64 KB flash, 4 KB data flash, 4 KB RAM, 10-bit ADC (26 channels), and real-time clock - designed for ultra-low-power industrial control applications operating from 1.6 V to 5.5 V across –40°C to +105°C.

For engineers reviewing the R5F100EHGNA#U0 datasheet, R5F100EHGNA#U0 pinout, R5F100EHGNA#U0 application, or R5F100EHGNA#U0 equivalent, key selection criteria include its 0.57 μA STOP-mode current, 40-pin 6 × 6 mm HWQFN-40 package, integrated LIN-capable UART, hardware multiplier/divider, and support for background data flash rewriting.

Technical Context

The R5F100EHGNA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). It integrates dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy at 32 MHz) and dedicated low-speed oscillator for RTC/WDT.

Its peripheral set includes up to 16× 16-bit timers, 3× I²C/Simplified I²C channels, 2× UART/LIN interfaces, 2–8× CSI (SPI-compatible) channels, DMA controller (4 channels), and on-chip voltage detector with 14-level LVD interrupt/reset selection - all optimized for deterministic real-time operation in resource-constrained environments.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch), exposed thermal pad, 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 R5F100EGGNA#U0 and R5F100FHGNA#U0, the R5F100EHGNA#U0 delivers optimal balance of memory (64 KB flash / 4 KB data flash), ultra-low power (0.57 μA STOP), and industrial temperature range - making it ideal for mid-complexity edge controllers where cost, power, and reliability are co-prioritized.

Availability

R5F100EHGNA#U0 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, programmable relays, and battery-powered sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for R5F100EHGNA#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering high integration, robustness, and toolchain maturity for rapid development of industrial controls and consumer appliances.

FAQ

What is the maximum operating frequency and core performance of the R5F100EHGNA#U0?

The R5F100EHGNA#U0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS performance. Its RL78 CPU core achieves minimum instruction execution time of 0.03125 μs at full speed, with configurable clock scaling down to 32.768 kHz for ultra-low-power RTC operation - all within the same R5F100EHGNA#U0 device.

Does the R5F100EHGNA#U0 support in-system programming and secure firmware updates?

Yes, the R5F100EHGNA#U0 supports full in-system programming via on-chip debug interface and includes flash shield window functionality to prevent unauthorized access to code memory. It also implements boot swap capability, allowing safe firmware updates by validating new code in a secondary bank before switching execution - a critical feature for field-deployed R5F100EHGNA#U0 applications.

What analog peripherals are integrated into the R5F100EHGNA#U0?

The R5F100EHGNA#U0 integrates a 10-bit successive-approximation ADC with up to 26 input channels, internal 1.45 V reference voltage, and temperature sensor. It supports simultaneous sampling modes and operates across the full 1.6–5.5 V supply range - enabling direct measurement of battery voltage, thermistors, and isolated current sensors without external signal conditioning in R5F100EHGNA#U0-based designs.

Can the R5F100EHGNA#U0 operate reliably in harsh industrial environments?

Yes, the R5F100EHGNA#U0 is qualified for industrial temperature range (–40°C to +105°C) and includes on-chip voltage detector (LVD) with 14 selectable threshold levels for brown-out protection, plus POR circuitry. Its 40-pin HWQFN package offers superior thermal dissipation and mechanical stability compared to leaded alternatives - ensuring long-term reliability in R5F100EHGNA#U0 deployments inside motor drives and factory automation equipment.

How does the R5F100EHGNA#U0 handle real-time communication protocols like LIN?

The R5F100EHGNA#U0 includes two UART modules, each capable of LIN 2.2-compliant operation with automatic sync-break detection, checksum calculation, and slave node response timing control. This native LIN support eliminates external transceivers in many applications and enables seamless integration into vehicle body networks or industrial distributed control systems using the R5F100EHGNA#U0 as master or slave node.