Renesas R5F104MLGFA#30

Overview

R5F104MLGFA#30 from Renesas is an RL78/G14 8-bit microcontroller featuring 384 KB flash, 32 KB RAM, and 80-pin LFQFP (0.5 mm pitch) package. It delivers 44 DMIPS at 32 MHz, operates from 1.6–5.5 V, supports -40 to +105°C industrial temperature range (G-grade), and integrates RTC, 12-bit ADC (20 channels), UART/LIN, I²C, SPI, and ultra-low-power HALT/STOP/SNOOZE modes for embedded control in motor drives and industrial sensors.

For engineers reviewing the R5F104MLGFA#30 datasheet, R5F104MLGFA#30 pinout, R5F104MLGFA#30 application, or R5F104MLGFA#30 equivalent, this page provides verified electrical specifications, validated pin functions, real-world use cases in thermal management and power monitoring systems, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The R5F104MLGFA#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs @ 32 MHz to 30.5 µs @ 32.768 kHz). It embeds a high-accuracy ±1.0% on-chip oscillator (1–64 MHz selectable) and supports background data flash rewriting (BGO) with 1M-cycle endurance.

Peripheral integration includes Event Link Controller (ELC) for hardware-triggered peripheral chaining, Data Transfer Controller (DTC) with block/repeat transfer modes, and dual-voltage interface capability enabling direct connection to 1.8/2.5/3.0 V logic without level shifters.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP, 12 × 12 mm body, 0.5 mm pitch, exposed pad (recommended to connect to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104MLGFA#30, R5F104MLGFB#30 offers identical functionality in a mechanically incompatible package, while R5F104PLGFA#30 extends I/O and serial capacity at the cost of larger board area - both require schematic and layout review before substitution.

Availability

R5F104MLGFA#30 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, programmable logic controllers, and power monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F104MLGFA#30 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, and power management solutions for industrial, automotive, and IoT markets.

The RL78/G14 family targets cost-sensitive, ultra-low-power embedded control applications - designed to replace legacy 8-bit MCUs while delivering enhanced analog integration, security, and toolchain compatibility.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104MLGFA#30?

The R5F104MLGFA#30 achieves a maximum operating frequency of 32 MHz, delivering 44 DMIPS performance. This is measured using the EEMBC CoreMark benchmark under standard conditions (VDD = 3.3 V, TA = 25°C) and reflects deterministic execution throughput for real-time control tasks. The RL78 core's 3-stage pipeline and optimized instruction set enable consistent cycle counts per operation.

Does the R5F104MLGFA#30 support background data flash rewriting while executing code from main flash?

Yes, the R5F104MLGFA#30 supports Background Operation (BGO) for data flash rewriting. During BGO, the CPU can execute instructions from program flash memory while the data flash is being rewritten - critical for over-the-air firmware updates and parameter storage without system interruption. The data flash endurance is rated at 1,000,000 write cycles (typical) across the full 1.8–5.5 V supply range.

What are the key power-saving modes available on the R5F104MLGFA#30 and their typical current consumption?

The R5F104MLGFA#30 offers HALT mode (66 µA/MHz), STOP mode (0.60 µA), and SNOOZE mode (intermediate power state with selected peripherals active). STOP mode retains RTC and LVD operation while disabling the CPU and most peripherals - ideal for battery-backed applications requiring periodic wake-up. All modes are entered via software instruction and support multiple wake-up sources including INTP0, RTC alarm, and serial receive events.

How many analog input channels does the integrated 12-bit ADC support on the R5F104MLGFA#30?

The R5F104MLGFA#30 integrates a 12-bit successive-approximation ADC supporting up to 20 analog input channels. Inputs include dedicated ANI0–ANI19 pins plus VCOUT0/VCOUT1 for on-chip voltage comparators, and AVREFP/AVREFM for differential reference. The ADC operates across the full 1.6–5.5 V supply range and includes internal 1.45 V reference and temperature sensor for calibration.

Is the R5F104MLGFA#30 pin-compatible with other RL78/G14 variants such as the R5F104MLGFB#30?

No, the R5F104MLGFA#30 is not pin-compatible with R5F104MLGFB#30. While both share identical electrical specifications and peripheral sets, R5F104MLGFA#30 uses an 80-pin LFQFP package with 0.5 mm pitch and exposed thermal pad, whereas R5F104MLGFB#30 uses an 80-pin LQFP package with 0.65 mm pitch and no thermal pad. PCB layout and soldering profile must be redesigned for substitution.