Renesas R5F104LLAFA#30

Overview

R5F104LLAFA#30 from Renesas is a 64-pin LQFP-0.65 mm pitch, 512 KB flash, 32 KB RAM RL78/G14 16-bit microcontroller operating from 1.6 V to 5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), used in industrial control panels requiring deterministic real-time response and extended battery life.

For engineers reviewing the R5F104LLAFA#30 datasheet, R5F104LLAFA#30 pinout, R5F104LLAFA#30 application, or R5F104LLAFA#30 equivalent, key selection criteria include its 64-pin LQFP package, 512 KB code flash with data flash shield window, integrated RTC with calendar/alarm, 12-channel 16-bit TAU timer, and dual UART/LIN support for serial diagnostics and sensor interfacing.

Technical Context

The R5F104LLAFA#30 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz high-speed oscillator) to 30.5 µs (32.768 kHz subsystem clock). It integrates an Event Link Controller (ELC) enabling hardware-triggered peripheral chaining without CPU intervention.

Its power management includes HALT, STOP, and SNOOZE modes, plus on-chip LVD with 14 selectable voltage thresholds and POR circuitry. The Data Transfer Controller (DTC) supports block, repeat, and normal transfer modes activated by 19–26 event sources, enabling efficient background data movement during low-power operation.

Key Specifications

Pinout & Package

Package: 64-pin LQFP, 12 × 12 mm body, 0.65 mm pitch, plastic, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LLAFA#30, R5F104LKAFB#30 trades flash capacity for lower unit cost and simpler layout, while R5F104LLAFB#30 maintains identical memory and peripherals in a denser package-requiring requalification of soldering process and thermal management but enabling smaller board area.

Availability

R5F104LLAFA#30 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, factory automation sensor nodes, and medical infusion pump controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F104LLAFA#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 automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications demanding robust real-time performance, extended battery life, and integrated analog peripherals.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104LLAFA#30?

The R5F104LLAFA#30 achieves a maximum operating frequency of 32 MHz using its high-speed on-chip oscillator, delivering 44 DMIPS performance. This rating is measured under standard conditions (VDD = 3.3 V, TA = 25°C) and reflects integer instruction throughput per second, validated in Renesas Application Note R01AN1414.

Does the R5F104LLAFA#30 support hardware debugging and secure firmware updates?

Yes, the R5F104LLAFA#30 includes on-chip debug functionality compatible with E2 emulator and Renesas CS+ IDE. It supports secure firmware updates via boot swapping and flash shield window features, allowing protected write access to designated flash regions while prohibiting unauthorized block erasure-critical for field-upgradable industrial devices.

How many serial communication interfaces does the R5F104LLAFA#30 integrate, and what protocols are supported?

The R5F104LLAFA#30 integrates up to four UART channels (with LIN-bus support), ten I²C/simplified I²C channels, and eight CSI (SPI-compatible) channels. UART2 and UART3 support LIN 2.2 physical layer timing, while CSI channels operate at up to 10 Mbps with programmable polarity and phase-enabling concurrent sensor, display, and diagnostic bus connectivity.

What analog peripherals are included in the R5F104LLAFA#30, and what are their resolution and input channel counts?

The R5F104LLAFA#30 includes an 8/10-bit successive-approximation ADC with up to 20 analog input channels, internal 1.45 V reference voltage, and integrated temperature sensor. It also features two 8-bit D/A converters (0–VDD output range) and up to two analog comparators with selectable internal/external reference and window mode-supporting closed-loop control and battery monitoring without external ICs.

Is the R5F104LLAFA#30 pin-compatible with other RL78/G14 variants such as R5F104LKAFB#30 or R5F104LLAFB#30?

No, the R5F104LLAFA#30 is not pin-compatible with R5F104LKAFB#30 (LFQFP-0.5 mm) or R5F104LLAFB#30 (LFQFP-0.5 mm), as it uses a 64-pin LQFP-0.65 mm pitch package. While electrical functionality overlaps within the RL78/G14 family, mechanical differences-including pitch, pad layout, and exposed thermal pad presence-require separate PCB designs for each package variant.