Renesas R5F100GAAFB#X0

Overview

R5F100GAAFB#X0 from Renesas is a 48-pin LFQFP, 0.5-mm pitch, industrial-grade RL78/G13 16-bit microcontroller with 128 KB flash, 8 KB data flash, 12 KB RAM, 32 MHz max CPU speed, and -40°C to +105°C operation. It integrates RTC, 10-bit ADC (26 channels), UART/SPI/I²C interfaces, 16-bit timers, and ultra-low-power modes (0.57 μA in STOP with RTC+LVD active), targeting battery-powered industrial sensors and motor control edge nodes.

For engineers reviewing the R5F100GAAFB#X0 datasheet, R5F100GAAFB#X0 pinout, R5F100GAAFB#X0 application, or R5F100GAAFB#X0 equivalent, key selection criteria include its G-grade temperature rating, integrated data flash for field firmware updates, real-time clock with calendar/alarm, low-voltage detection with 14-level interrupt/reset, and background data flash rewriting capability during program execution.

Technical Context

The R5F100GAAFB#X0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs at 32 MHz to 30.5 μs at 32.768 kHz). It supports multiple low-power states-HALT, STOP, and SNOOZE-with dedicated on-chip oscillators (32 MHz high-accuracy ±1.0% and 32.768 kHz subsystem clock).

Its peripheral set includes up to 16× 16-bit timers, 1× 12-bit interval timer, 1× real-time clock with calendar and correction, 1× watchdog timer, 2–4-channel DMA, and serial interfaces: CSI (SPI-compatible), UART/LIN, and I²C-each scalable across channel count depending on pin count and variant configuration.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP, 7 mm × 7 mm, 0.5-mm pitch, lead-free, RoHS-compliant. Thermal pad exposed on bottom for enhanced heat dissipation in continuous industrial operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100GAAFB#X0, R5F100GCAFB#X0 offers identical memory and thermal specs but reduced peripheral activation, while R5F101GAAFB#X0 removes data flash entirely-making it lighter-weight for fixed-parameter deployments but eliminating BGO-based firmware update flexibility.

Availability

R5F100GAAFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart motor controllers, and PLC digital I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F100GAAFB#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 delivers ultra-low-power 16-bit MCU performance for cost-sensitive, battery-operated, and thermally constrained industrial and consumer applications-emphasizing energy efficiency, integration, and ease of migration within the RL78 ecosystem.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100GAAFB#X0?

The R5F100GAAFB#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its RL78 CPU core features a 3-stage pipeline and supports configurable instruction timing-from 0.03125 μs at full speed to 30.5 μs at 32.768 kHz-enabling dynamic trade-offs between responsiveness and power consumption in the R5F100GAAFB#X0.

Does the R5F100GAAFB#X0 include integrated data flash, and what are its endurance specifications?

Yes, the R5F100GAAFB#X0 includes 8 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) across the full 1.8 V to 5.5 V supply range. It supports background operation (BGO), allowing the R5F100GAAFB#X0 to execute code from program memory while simultaneously rewriting data flash-critical for reliable field firmware updates and parameter logging.

What temperature grade does the R5F100GAAFB#X0 support, and how is it indicated in the part number?

The R5F100GAAFB#X0 is rated for industrial operation from -40°C to +105°C, denoted by the "G" in its part number (R5F100GAAFB#X0). This G-grade qualification ensures long-term reliability in demanding environments such as factory automation controllers, motor drives, and outdoor infrastructure-where ambient temperatures exceed standard commercial-grade limits.

How many analog input channels does the R5F100GAAFB#X0 support, and what is the ADC resolution?

The R5F100GAAFB#X0 supports up to 26 analog input channels with a 10-bit successive-approximation ADC. It includes internal reference voltage (1.45 V) and a calibrated temperature sensor, and operates across the full 1.6 V to 5.5 V supply range-making the R5F100GAAFB#X0 suitable for direct interfacing with resistive sensors, current shunts, and thermistors without external signal conditioning.

What low-power modes are available on the R5F100GAAFB#X0, and what is the lowest achievable current draw?

The R5F100GAAFB#X0 supports HALT, STOP, and SNOOZE low-power modes. In STOP mode with only the real-time clock (RTC) and low-voltage detector (LVD) active, it achieves 0.57 μA typical current consumption. This ultra-low quiescent current enables multi-year battery life in always-on sensor applications-confirming the R5F100GAAFB#X0's suitability for energy-constrained edge devices.