Renesas R5F100GEGFB#X0

Overview

R5F100GEGFB#X0 from Renesas is a 48-pin LFQFP-packaged 16-bit RL78/G13 microcontroller with 128 KB flash, 8 KB data flash, 12 KB RAM, and industrial-grade operation up to +105°C. It delivers 41 DMIPS at 32 MHz, consumes just 66 μA/MHz active and 0.57 μA in RTC+LVD-only mode, and integrates UART, I²C, SPI, 16-bit timers, 10-bit ADC (26 channels), and real-time clock - deployed in smart metering, industrial sensors, and battery-powered HMI control units.

For engineers reviewing the R5F100GEGFB#X0 datasheet, R5F100GEGFB#X0 pinout, R5F100GEGFB#X0 application, or R5F100GEGFB#X0 equivalent, key selection criteria include its G-grade temperature range (–40°C to +105°C), embedded data flash rewrite endurance (1M cycles), low-power STOP/HALT/SNOOZE modes, and support for LIN-bus via UART - all critical for long-life, field-deployed embedded systems requiring firmware updates and robust timing.

Technical Context

The R5F100GEGFB#X0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 128 KB on-chip code flash (1 KB block size), 8 KB data flash with background operation (BGO), and 12 KB RAM - all supporting self-programming with boot swap and flash shield window functions.

Peripherals are tightly integrated for deterministic real-time control: dual DMA controller (4 channels), 16-bit timer array (12 channels), 12-bit interval timer, calendar-capable RTC with alarm/correction, watchdog timer with dedicated low-speed oscillator, and 10-bit ADC with internal 1.45 V reference and temperature sensor - all operating across 1.6–5.5 V supply and full industrial temperature range.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 mm × 7 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 R5F100GEGFB#X0, R5F100GGGFB#X0 trades industrial temperature rating for lower cost, while R5F101GEGFB#X0 removes data flash to simplify memory management at the expense of embedded nonvolatile parameter storage - both require hardware validation for thermal and data retention requirements.

Availability

R5F100GEGFB#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and automotive body control modules requiring stable component supply, long-term lifecycle support, and guaranteed G-grade qualification.

Supply support for R5F100GEGFB#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/G13 family is engineered for ultra-low-power general-purpose embedded control - balancing performance, energy efficiency, and integration to replace legacy 8/16-bit MCUs in cost- and reliability-sensitive applications.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100GEGFB#X0?

The R5F100GEGFB#X0 operates at up to 32 MHz with a high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its RL78 CPU core supports variable instruction execution time - as fast as 0.03125 μs per instruction at 32 MHz - making it suitable for real-time control loops and deterministic interrupt handling in the R5F100GEGFB#X0.

Does the R5F100GEGFB#X0 include integrated data flash memory, and what is its endurance rating?

Yes, the R5F100GEGFB#X0 includes 8 KB of on-chip data flash memory with a typical endurance of 1,000,000 write/erase cycles and full operation across 1.8–5.5 V supply. This enables reliable storage of calibration data, device configuration, and event logs without external nonvolatile memory - a key feature distinguishing the R5F100GEGFB#X0 from code-flash-only variants.

What temperature grade does the R5F100GEGFB#X0 support, and how is it indicated in the part number?

The R5F100GEGFB#X0 carries the 'G' suffix in its ordering code, designating Industrial-grade qualification with an operating ambient temperature range of –40°C to +105°C. This is confirmed in Renesas documentation and makes the R5F100GEGFB#X0 appropriate for under-hood automotive, factory automation, and outdoor equipment where extended thermal margins are mandatory.

Can the R5F100GEGFB#X0 operate without an external crystal, and what is the accuracy of its internal oscillator?

Yes, the R5F100GEGFB#X0 features a high-accuracy on-chip oscillator selectable from 1–32 MHz, with ±1.0% frequency tolerance over VDD = 1.8–5.5 V and TA = –20°C to +85°C. This allows full system operation without external timing components - reducing BOM cost and board space - while maintaining timing integrity for UART, I²C, and RTC functions in the R5F100GEGFB#X0.

How many analog input channels does the R5F100GEGFB#X0 support, and what ADC resolution is available?

The R5F100GEGFB#X0 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels (ANI0–ANI25), plus internal 1.45 V reference voltage and temperature sensor. All analog inputs operate across the full 1.6–5.5 V supply range, enabling direct connection to diverse sensors - a capability central to the R5F100GEGFB#X0's role in condition-monitoring and smart sensing applications.