Renesas R5F10ELEGFB#X0

Overview

R5F10ELEGFB#X0 from Renesas Electronics is a 64-pin LFQFP-packaged 16-bit RL78/G1A microcontroller with 64 KB flash, 4 KB data flash, 4 KB RAM, 28-channel 12-bit ADC, and industrial-grade −40°C to +105°C operation. It integrates UART, I²C, SPI, RTC, 8-channel timer array, and ultra-low-power modes (0.57 µA in RTC+LVD halt mode), targeting battery-powered industrial sensors and motor control interfaces.

For engineers reviewing the R5F10ELEGFB#X0 datasheet, R5F10ELEGFB#X0 pinout, R5F10ELEGFB#X0 application, or R5F10ELEGFB#X0 equivalent, key selection criteria include its 64-pin LFQFP package, 64 KB flash capacity, industrial temperature rating, integrated 12-bit ADC with 3.375 µs conversion time, and support for multiple serial interfaces including LIN-capable UART2.

Technical Context

The R5F10ELEGFB#X0 implements the RL78 16-bit CISC core with Harvard architecture and 3-stage pipeline, delivering 41 DMIPS at 32 MHz. Its instruction set includes single-cycle 16×16 multiply and two-cycle MAC operations, enabling efficient signal processing in resource-constrained embedded systems.

It features dual power domains (VDD/EVDD0, VSS/EVSS0) for noise-sensitive analog and digital subsystems, supports on-chip debug via TOOL0/TOOLRxD/TOOLTxD, and provides peripheral I/O redirection through PIOR registers to flexibly assign functions like KR0–KR9, TI0x/TO0x, and SDA/SCL across pins.

Key Specifications

Pinout & Package

Package: LFQFP-64 (10 mm × 10 mm, 0.5 mm pitch), with separate analog (AVDD/AVSS) and digital (VDD/VSS) power domains plus dedicated EVDD0/EVSS0 for port isolation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10ELEGFB#X0, R5F10ELCGFB#X0 offers identical functionality with extended temperature validation, while R5F10ELDGBG#U0 trades pin-compatible analog isolation for 60% smaller footprint-making the former ideal for harsh environments and the latter for compact consumer-grade meters.

Availability

R5F10ELEGFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart motor control interfaces, and programmable logic controller I/O modules requiring stable component supply across long production lifecycles.

Supply support for R5F10ELEGFB#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 automotive, industrial, and IoT markets.

The RL78/G1A product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated industrial controls and sensor applications requiring functional safety compliance and long-term supply stability.

FAQ

What is the maximum operating frequency and performance of the R5F10ELEGFB#X0?

The R5F10ELEGFB#X0 operates at up to 32 MHz using its high-speed on-chip oscillator with ±1% accuracy across 1.8–3.6 V and −20°C to +85°C. It delivers 41 DMIPS of processing performance, with 86% of instructions executed in 1–2 clock cycles due to its 3-stage pipeline and optimized CISC architecture. This enables deterministic real-time response in motor control and sensor fusion applications.

Does the R5F10ELEGFB#X0 support hardware-based functional safety features?

Yes, the R5F10ELEGFB#X0 includes multiple hardware safety mechanisms required for IEC/UL 60730 Class B compliance: flash memory CRC calculation, RAM parity error checking, SFR write protection, illegal memory access detection, clock stop/frequency monitoring, and ADC self-test capability. These features are implemented in silicon and require no software overhead to activate.

How many serial communication interfaces does the R5F10ELEGFB#X0 integrate?

The R5F10ELEGFB#X0 integrates up to six serial interfaces: three UARTs (including one LIN-capable UART2), two I²C masters/multi-masters (IICA0 and IIC00/IIC10), and six Simplified SPI (CSI) channels across three serial array units. All interfaces support independent clock sources and can operate concurrently without CPU intervention via DMA.

What is the purpose of the EVDD0 and EVSS0 pins on the R5F10ELEGFB#X0?

The EVDD0 and EVSS0 pins on the R5F10ELEGFB#X0 provide a dedicated power and ground domain for port I/O circuits, electrically isolating them from the main VDD/VSS supply. This reduces digital switching noise coupling into sensitive analog circuits (e.g., ADC, RTC), improving measurement accuracy and timing stability-especially critical in precision sensor and metering applications.

Can the R5F10ELEGFB#X0 operate from a 1.6 V supply?

Yes, the R5F10ELEGFB#X0 supports 1.6 V to 3.6 V single-supply operation. At 1.6 V, it operates in LV (low-voltage) mode up to 4 MHz, and its 12-bit ADC remains fully functional with support for 1.6 V minimum AVDD. The internal voltage reference (1.45 V) and on-chip temperature sensor also function across this full voltage range.