Renesas R5F104LCAFA#X0

Overview

R5F104LCAFA#X0 from Renesas Electronics is a 64-pin LQFP-0.65 mm pitch, 512 KB flash, 48 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 motor control and sensor-based HMI systems.

For engineers reviewing the R5F104LCAFA#X0 datasheet, R5F104LCAFA#X0 pinout, R5F104LCAFA#X0 application, or R5F104LCAFA#X0 equivalent, key selection criteria include its 512 KB on-chip flash with block erase security, dual 10-bit A/D converter (20-channel), real-time clock with calendar/alarm, and integrated event link controller for deterministic peripheral triggering.

Technical Context

The R5F104LCAFA#X0 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 integrates a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes activated by interrupt sources, plus chain transfer capability.

Its Event Link Controller (ELC) enables hardware-level linking of up to 26 event signals to peripheral functions without CPU intervention, while the high-accuracy ±1.0% on-chip oscillator (64–1 MHz selectable) eliminates external crystal dependency for many applications.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (12 × 12 mm, 0.65 mm pitch), RoHS-compliant, industrial-grade (−40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LCAFA#X0, R5F104LGAFB#X0 trades flash/RAM capacity and I/O count for lower unit cost and smaller package, while R5F104LJAFP#V0 maintains identical memory/performance specs but adds automotive-grade thermal resilience and relaxed layout constraints.

Availability

R5F104LCAFA#X0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and human-machine interface applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for R5F104LCAFA#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 industrial, automotive, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCU performance for general-purpose embedded applications, emphasizing energy efficiency, integrated analog peripherals, and simplified development through hardware acceleration like ELC and DTC.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104LCAFA#X0?

The R5F104LCAFA#X0 operates at up to 32 MHz, achieving 44 DMIPS performance. Its RL78 CPU core uses a 3-stage pipeline and supports configurable instruction timing - minimum execution time is 0.03125 μs at 32 MHz with the high-speed on-chip oscillator enabled. This frequency is sustained across the full 1.6 V to 5.5 V supply range.

Does the R5F104LCAFA#X0 support real-time clock functionality with calendar and alarm features?

Yes, the R5F104LCAFA#X0 includes a dedicated real-time clock (RTC) module supporting calendar operation for 99 years, alarm interrupt generation, and automatic clock correction. It operates independently in STOP mode with only 0.60 μA current draw when powered by VDD, and accepts either the 32.768 kHz crystal (X1/X2) or internal sub-system clock.

How many analog input channels and what resolution does the A/D converter in the R5F104LCAFA#X0 provide?

The R5F104LCAFA#X0 integrates a 10-bit successive approximation A/D converter with up to 20 analog input channels (ANI0–ANI19). It includes an internal 1.45 V reference voltage and on-chip temperature sensor, enabling accurate measurements across the full 1.6 V to 5.5 V supply range without external references.

What packaging and lead pitch does the R5F104LCAFA#X0 use, and is it RoHS-compliant?

The R5F104LCAFA#X0 uses a 64-pin LQFP package with 0.65 mm lead pitch (12 × 12 mm body), identified by the "FA" suffix and "#X0" embossed tape packaging specification. It is fully RoHS-compliant and rated for industrial temperature operation (−40°C to +85°C).

Can the R5F104LCAFA#X0 perform flash self-programming while executing application code?

Yes, the R5F104LCAFA#X0 supports flash self-programming with boot swap and flash shield window functions. Code flash can be rewritten in-system using the on-chip debug interface, and the flash library reserves specific RAM regions (e.g., start address F3F00H for R5F104xL variants) to ensure safe concurrent execution and programming without corruption.