Renesas R5F104LHGFA#30

Overview

R5F104LHGFA#30 from Renesas is a 64-pin LFQFP, 0.5 mm pitch, industrial-grade (G: −40°C to +105°C) RL78/G14 16-bit MCU with 512 KB flash, 8 KB data flash, 48 KB RAM, and integrated RTC, 10-bit ADC (20 channels), UART/LIN, I²C, SPI, and ultra-low-power operation (0.60 μA in STOP mode). It targets battery-powered industrial control and sensor interface applications requiring long runtime and high integration.

For engineers reviewing the R5F104LHGFA#30 datasheet, R5F104LHGFA#30 pinout, R5F104LHGFA#30 application, or R5F104LHGFA#30 equivalent, key selection criteria include its 512 KB code flash capacity, 64-pin LFQFP-0.5 mm package, −40°C to +105°C industrial temperature rating, integrated LIN-capable UARTs, and real-time clock with calendar function - all critical for deterministic embedded control in harsh environments.

Technical Context

The R5F104LHGFA#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs min @ 32 MHz to 30.5 µs @ 32.768 kHz). It integrates a Data Transfer Controller (DTC) for autonomous memory transfers and an Event Link Controller (ELC) enabling hardware-triggered peripheral chaining without CPU intervention.

Its power architecture supports HALT, STOP, and SNOOZE modes, with on-chip LVD (14-level selectable) and POR. The high-accuracy ±1.0% on-chip oscillator (64–1 MHz options) eliminates external crystal dependency for many timing-critical functions, while the 10-bit ADC includes internal reference (1.45 V) and temperature sensor.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP, 10 × 10 mm body, 0.5 mm pitch, exposed thermal pad (not electrically connected per datasheet), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LHGFA#30, R5F104LJGFA#30 trades extended temperature capability for lower cost in milder environments, while R5F104LLGFB#30 retains full functionality in a more manufacturable but less space-efficient LQFP package - enabling design continuity without sacrificing performance.

Availability

R5F104LHGFA#30 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and programmable logic controller I/O modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F104LHGFA#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, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The RL78/G14 family is designed for cost-sensitive, ultra-low-power general-purpose embedded control - balancing high integration, robust peripheral sets, and energy efficiency for industrial automation and sensing.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F104LHGFA#30?

The R5F104LHGFA#30 operates at up to 32 MHz with a measured performance of 44 DMIPS. This is achieved using the high-speed on-chip oscillator (±1.0% accuracy) without requiring external crystals, making it suitable for timing-critical control loops in industrial applications where board space and BOM count are constrained.

Does the R5F104LHGFA#30 support LIN bus communication, and which UART channels provide this capability?

Yes, the R5F104LHGFA#30 supports LIN 2.2 protocol on UART channels 0, 1, and 2. Each channel includes dedicated LIN-mode control bits and automatic checksum generation, enabling direct connection to LIN transceivers without external protocol handling - verified in the R01DS0053EJ0370 datasheet Section 1.1 "Features" and Section 23 "UART".

What is the guaranteed endurance and data retention specification for the data flash memory in the R5F104LHGFA#30?

The R5F104LHGFA#30 features 8 KB of data flash memory rated for 1,000,000 write/erase cycles (typical) and 20-year data retention at +85°C. These specifications are guaranteed under VDD = 1.8–5.5 V operation and are documented in Section 1.1 "Data Flash Memory" of the R01DS0053EJ0370 datasheet.

How does the R5F104LHGFA#30 manage power during deep sleep, and what peripherals remain active in STOP mode?

In STOP mode, the R5F104LHGFA#30 draws only 0.60 μA while maintaining operation of the real-time clock (RTC), low-voltage detector (LVD), and independent watchdog timer (IWDT). All other clocks and peripherals are halted, but RTC calendar and alarm functions continue - enabling precise wake-up scheduling for periodic sensor sampling in battery-powered systems.

Is the R5F104LHGFA#30 pin-compatible with other RL78/G14 variants in the same 64-pin LFQFP package?

Yes, all RL78/G14 devices in the 64-pin LFQFP-0.5 mm package (e.g., R5F104LJGFA#30, R5F104LLGFB#30) share identical pinouts and electrical characteristics. Pin compatibility is confirmed in Section 1.3.6 "48-pin products" and Table 1-1 of the R01DS0053EJ0370 datasheet, ensuring drop-in replacement within the same package family for memory or temperature grade changes.