Renesas R5F100MHGFA#X0

Overview

R5F100MHGFA#X0 from Renesas is an RL78/G13 8-bit microcontroller with 128 KB flash memory, 12 KB RAM, and 8 KB data flash, operating at up to 32 MHz (41 DMIPS), featuring ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), 1.6–5.5 V supply, and industrial-grade −40°C to +105°C operation. It integrates 16-bit timers, 10-bit ADC (26 channels), UART/LIN, I²C, CSI, RTC, and DMA for embedded control in battery-powered and thermally constrained systems.

For engineers reviewing the R5F100MHGFA#X0 datasheet, R5F100MHGFA#X0 pinout, R5F100MHGFA#X0 application, or R5F100MHGFA#X0 equivalent, key selection criteria include its LQFP-80 package with 0.5-mm pitch, integrated data flash with 1M write cycles, real-time clock with calendar/alarm, and support for SNOOZE mode for low-latency wake-up from ultra-low-power states.

Technical Context

The R5F100MHGFA#X0 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It features dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy, selectable 1–32 MHz) and dedicated low-speed oscillator for watchdog and RTC.

Its peripheral set includes eight 16-bit timers, one 12-bit interval timer, one real-time clock with calendar and clock correction, and three to ten I²C/Simplified I²C channels - configurable per variant - alongside two to four UART/LIN interfaces and two to eight CSI (SPI-compatible) channels, all accessible via programmable I/O ports with N-ch open-drain, TTL input, and pull-up options.

Key Specifications

Pinout & Package

LQFP-80 package, 12 × 12 mm body, 0.5-mm lead pitch, exposed pad (thermal enhancement), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100MGAFB#X0 and R5F100MHAFB#X0, the R5F100MHGFA#X0 uniquely delivers 128 KB flash plus 8 KB wear-leveling-capable data flash in an industrial-temperature LQFP-80 package - enabling robust firmware updates, calibrated sensor storage, and RTC-backed event logging without external components.

Availability

R5F100MHGFA#X0 is available at Aetrix Electronics and suitable for smart energy meters, industrial I/O modules, and white goods control boards requiring stable component supply, extended lifecycle assurance, and industrial-temperature qualification.

Supply support for R5F100MHGFA#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 targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for battery-operated and thermally constrained systems.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100MHGFA#X0?

The R5F100MHGFA#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its minimum instruction execution time is 0.03125 μs under this condition, and it supports dynamic clock scaling down to 32.768 kHz for ultra-low-power RTC operation with 30.5 μs instruction time. This flexibility allows precise trade-offs between speed and power across operational modes in the R5F100MHGFA#X0.

Does the R5F100MHGFA#X0 include integrated data flash, and what are its endurance and voltage specifications?

Yes, the R5F100MHGFA#X0 includes 8 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical). It supports background operation (BGO), allowing code execution from program flash during data flash rewrites. Rewrites operate across the full supply range of VDD = 1.8 V to 5.5 V, enabling robust field updates without special voltage sequencing - a key capability confirmed for the R5F100MHGFA#X0 in its datasheet.

What package type and pin count does the R5F100MHGFA#X0 use, and is it RoHS-compliant?

The R5F100MHGFA#X0 uses an 80-pin LFQFP package (PLQP0080KE-A) with 12 × 12 mm body size and 0.5-mm lead pitch. It includes an exposed thermal pad for enhanced heat dissipation. The device is RoHS-compliant and qualified for industrial temperature operation (−40°C to +105°C), as specified in the official Renesas ordering information for the R5F100MHGFA#X0.

How does the R5F100MHGFA#X0 support low-power system design beyond STOP mode?

Beyond STOP mode (0.57 μA), the R5F100MHGFA#X0 supports HALT and SNOOZE modes. SNOOZE mode allows peripherals like UART or data flash to operate autonomously while the CPU sleeps - enabling wake-up on serial data receipt or completion of flash writes without full CPU restart. This reduces average system power in intermittently active applications, a verified feature of the R5F100MHGFA#X0.

Can the R5F100MHGFA#X0 interface directly with 1.8 V or 2.5 V logic devices?

Yes, the R5F100MHGFA#X0 supports different-potential interface capability: its I/O ports can be configured to safely connect to 1.8 V, 2.5 V, or 3.0 V external devices without level shifters. This is achieved via selective I/O voltage tolerance settings and compatible input thresholds, explicitly documented for the R5F100MHGFA#X0 in the RL78/G13 datasheet's I/O port section.