Renesas R5F100JEGFA#X0

Overview

R5F100JEGFA#X0 from Renesas is a 52-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring 256 KB flash, 8 KB data flash, 20 KB RAM, 16-bit RL78 CPU core, and real-time clock with calendar support. It operates from 1.6–5.5 V, achieves 41 DMIPS at 32 MHz, and targets low-power industrial control and sensor interface applications.

For engineers reviewing the R5F100JEGFA#X0 datasheet, R5F100JEGFA#X0 pinout, R5F100JEGFA#X0 application, or R5F100JEGFA#X0 equivalent, key selection criteria include its 52-pin LQFP package, integrated RTC with alarm/calendar, 10-bit A/D converter (26 channels), ultra-low power STOP mode (0.57 μA), and LIN-capable UART interfaces for automotive body electronics and smart home controllers.

Technical Context

The R5F100JEGFA#X0 implements the RL78 CISC CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It integrates dual serial interfaces-UART/LIN and I²C-with hardware background operation for data flash rewriting.

Its power architecture includes on-chip POR, selectable 14-level LVD, HALT/STOP/SNOOZE modes, and a high-accuracy ±1.0% on-chip oscillator (32 MHz max). The device supports self-programming with boot swap and flash shield window functions, enabling secure firmware updates in field-deployed systems.

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 mm × 10 mm, 0.65 mm pitch, RoHS-compliant, industrial-grade (−40°C to +105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100JEGFA#X0, R5F100JGAFB#X0 reduces board area by ~50% but increases assembly complexity, while R5F101JEGFA#X0 cuts BOM cost by eliminating data flash yet forfeits in-field update capability and calibration storage.

Availability

R5F100JEGFA#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and automotive body electronics requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.

Supply support for R5F100JEGFA#X0 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 RL78/G13 product line delivers true low-power performance for general-purpose embedded control, targeting applications needing robust real-time operation, rich analog integration, and secure firmware management.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F100JEGFA#X0?

The R5F100JEGFA#X0 operates at up to 32 MHz using its high-speed on-chip oscillator and delivers 41 DMIPS of processing performance. This metric reflects actual instruction throughput under typical code mix conditions and is validated per the RL78/G13 datasheet Rev.3.80. The R5F100JEGFA#X0 maintains this performance across its full 1.6–5.5 V supply range and −40°C to +105°C temperature grade.

Does the R5F100JEGFA#X0 support LIN bus communication, and if so, which peripheral implements it?

Yes, the R5F100JEGFA#X0 supports LIN 2.2 and SAE J2602 protocols via its UART peripherals. Specifically, UART0, UART1, and UART2 each include LIN break detection, sync field generation, and checksum calculation hardware. The R5F100JEGFA#X0 requires only an external LIN transceiver (e.g., TJA1020) to form a complete node, with no software overhead for protocol framing.

What are the memory protection features available on the R5F100JEGFA#X0?

The R5F100JEGFA#X0 provides flash block erase prohibition, flash shield window, and boot swap functionality. These features prevent unauthorized rewriting of protected code regions, enable secure firmware updates with rollback capability, and restrict debugger access to designated memory zones. All protections are configured via dedicated system registers and persist through power cycles, ensuring integrity of shipped firmware on the R5F100JEGFA#X0.

Can the R5F100JEGFA#X0 operate from a single-cell lithium battery, and what is its minimum supply voltage?

Yes, the R5F100JEGFA#X0 supports operation down to 1.6 V, making it compatible with single-cell Li-ion (2.5–4.2 V) and LiFePO₄ (2.0–3.6 V) batteries, as well as 2×AA alkaline (up to 3.2 V fresh). Its ultra-low power STOP mode draws just 0.57 μA at 1.6 V, enabling multi-year runtime in energy-harvesting or battery-backed applications using the R5F100JEGFA#X0.

How many analog input channels does the R5F100JEGFA#X0 support, and what is the resolution and reference configuration?

The R5F100JEGFA#X0 integrates a 10-bit successive-approximation A/D converter with up to 26 analog input channels. It supports internal 1.45 V reference (VREF) and external references via AVREFP/AVREFM pins. The converter operates across the full 1.6–5.5 V supply range and includes sample-and-hold circuitry, allowing simultaneous sampling across multiple channels - a capability confirmed in the R5F100JEGFA#X0 electrical characteristics table.