Renesas R5F104LDAFA#50

Overview

R5F104LDAFA#50 from Renesas Electronics is a 64-pin LQFP-0.65 mm pitch, 512 KB flash, 8 KB data flash, 20 KB RAM RL78/G14 16-bit MCU operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low-power HALT/STOP/SNOOZE modes (66 μA/MHz active, 0.60 μA RTC+LVD), used in industrial motor control and sensor-hub applications.

For engineers reviewing the R5F104LDAFA#50 datasheet, R5F104LDAFA#50 pinout, R5F104LDAFA#50 application, or R5F104LDAFA#50 equivalent, key selection considerations include its 64-pin LQFP-0.65 mm package, integrated 10-bit 20-channel ADC, dual UART/LIN support, real-time clock with calendar, and hardware DTC/ELC for deterministic peripheral event handling in resource-constrained embedded systems.

Technical Context

The R5F104LDAFA#50 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), supporting multiply/divide/accumulate operations and 1 MB address space. It integrates a high-accuracy ±1.0% on-chip oscillator (1–64 MHz selectable) and operates across –40°C to +85°C (Industrial D-grade).

Peripheral integration includes 12× 16-bit timers (TAU/Timer RJ/RD/RG), 1× 12-bit interval timer, 1× RTC with alarm/calendar, 1× watchdog, 8× CSI, 3–4× UART/LIN, 4–10× I²C, 20-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, and 2× 8-bit DAC outputs - all managed via Event Link Controller (ELC) and Data Transfer Controller (DTC) for autonomous operation.

Key Specifications

Pinout & Package

Package: 64-pin LQFP, 12 × 12 mm, 0.65 mm pitch (PLQP0064JA-A code), 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 R5F104LEAFA#50 and R5F104LGAFA#50, the R5F104LDAFA#50 uniquely balances maximum code density (512 KB), full peripheral set (3 UART, RTC calendar), and 20 KB RAM for complex state machines-making it optimal for feature-rich industrial edge devices requiring long-term firmware extensibility.

Availability

R5F104LDAFA#50 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor hubs, energy metering interfaces, and PLC I/O modules requiring stable component supply, long-lifecycle assurance, and traceable sourcing.

Supply support for R5F104LDAFA#50 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, battery-operated, and industrial embedded applications demanding high integration, robustness, and long-term supply stability.

FAQ

What is the maximum operating frequency and associated performance of the R5F104LDAFA#50?

The R5F104LDAFA#50 operates at up to 32 MHz with a peak performance of 44 DMIPS. This is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator. The R5F104LDAFA#50 sustains this speed across its full 1.6–5.5 V supply range and –40°C to +85°C temperature grade, making it suitable for real-time control loops in industrial environments.

Does the R5F104LDAFA#50 support in-system programming and secure firmware updates?

Yes, the R5F104LDAFA#50 supports full in-system programming via its on-chip debug interface and includes flash shield window functionality to prevent unauthorized access to protected memory regions. It also enables boot swapping and background data flash rewriting (BGO), allowing the R5F104LDAFA#50 to update firmware safely during operation without halting application execution.

What analog peripherals are integrated into the R5F104LDAFA#50, and how are they configured?

The R5F104LDAFA#50 integrates a 10-bit, 20-channel ADC with internal 1.45 V reference voltage and an on-chip temperature sensor. It also includes two 8-bit DAC channels with 0–VDD output range and real-time update capability. All analog functions are software-configurable via dedicated control registers and support differential input modes using AVREFP/AVREFM pins.

How does the R5F104LDAFA#50 manage low-power operation in battery-powered applications?

The R5F104LDAFA#50 achieves ultra-low-power operation through multiple dedicated modes: HALT (66 μA/MHz), STOP (0.60 μA with RTC + LVD active), and SNOOZE (selective peripheral wake-up). Its on-chip LVD supports 14 programmable voltage thresholds for brown-out detection, and the RTC maintains calendar/timekeeping in STOP mode using only the 32.768 kHz crystal - enabling years of operation on coin-cell batteries.

Is the R5F104LDAFA#50 pin-compatible with other RL78/G14 variants in the same package?

Yes, the R5F104LDAFA#50 shares identical pinout, electrical characteristics, and package dimensions (64-pin LQFP, 0.65 mm pitch) with all other RL78/G14 family members in the PLQP0064JA-A footprint, including R5F104LCAFA#50, R5F104LEAFA#50, and R5F104LGAFA#50. This allows drop-in replacement within the same memory/peripheral configuration group without PCB redesign.