Renesas R5F104LKAFA#30

Overview

R5F104LKAFA#30 from Renesas is a 64-pin LQFP-0.65 mm pitch, 512 KB flash, 24 KB RAM RL78/G14 16-bit microcontroller operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low-power HALT/STOP/SNOOZE modes (0.60 μA RTC+LVD), targeting industrial control and sensor interface applications.

For engineers reviewing the R5F104LKAFA#30 datasheet, R5F104LKAFA#30 pinout, R5F104LKAFA#30 application, or R5F104LKAFA#30 equivalent, key selection criteria include its 512 KB code flash with 1 KB block erase, 12-bit RTC calendar, dual 10-bit A/D (20-channel), 8-bit D/A (2-channel), and integrated Event Link Controller for deterministic peripheral triggering in resource-constrained embedded systems.

Technical Context

The R5F104LKAFA#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 integrates a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes activated by 19–26 event sources via the Event Link Controller (ELC).

Its analog subsystem includes an 8/10-bit A/D converter with internal 1.45 V reference and temperature sensor, plus an 8-bit D/A with real-time output capability. Power management features on-chip POR, 14-level LVD, and multiple low-power modes optimized for battery-backed operation.

Key Specifications

Pinout & Package

Package: 64-pin LQFP, 12 × 12 mm, 0.65 mm pitch, lead-free, RoHS compliant (Renesas code PLQP0064JA-A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LKAFA#30, R5F104LLAFA#30 offers guaranteed operation up to +105°C without sacrificing memory or peripherals, while R5F104LJAFA#30 trades flash/RAM capacity for lower unit cost-enabling tiered product variants from a single PCB layout.

Availability

R5F104LKAFA#30 is available at Aetrix Electronics and suitable for smart metering, industrial sensor hubs, home appliance control, and automotive body electronics requiring stable component supply and long-term lifecycle support.

Supply support for R5F104LKAFA#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 enterprise markets.

The RL78/G14 family delivers true low-power performance for general-purpose embedded applications, combining ultra-low active and standby currents with rich analog and communication peripherals in compact packages.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F104LKAFA#30?

The R5F104LKAFA#30 operates at up to 32 MHz with a measured performance of 44 DMIPS. This is achieved using the high-speed on-chip oscillator, which supports ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C. The RL78 core's 3-stage pipeline and optimized instruction set enable this efficiency without external clock components, making the R5F104LKAFA#30 ideal for cost-sensitive, space-constrained designs.

Does the R5F104LKAFA#30 support background data flash rewriting while executing application code?

Yes, the R5F104LKAFA#30 supports Background Operation (BGO) for data flash memory. During BGO, the CPU can execute instructions from program memory while the data flash (4 KB or 8 KB depending on variant) is being rewritten. This enables seamless firmware updates, parameter storage, or calibration data writes without halting real-time tasks-a critical capability for R5F104LKAFA#30-based systems requiring continuous operation.

What are the analog input capabilities of the R5F104LKAFA#30, including resolution, channel count, and reference options?

The R5F104LKAFA#30 integrates an 8/10-bit successive approximation A/D converter with up to 20 analog input channels (ANI0–ANI19). It supports both external references and an internal 1.45 V reference, and includes an on-die temperature sensor. Input voltage range is VSS to VDD (1.6–5.5 V), allowing direct interfacing with sensors across diverse supply domains-key for R5F104LKAFA#30 deployments in mixed-voltage industrial nodes.

How does the Event Link Controller (ELC) enhance real-time performance in the R5F104LKAFA#30?

The ELC in the R5F104LKAFA#30 enables hardware-level linking of 19–26 peripheral events (e.g., timer overflow, A/D conversion complete) directly to target functions (e.g., DTC trigger, A/D start) without CPU involvement. This eliminates interrupt latency and software overhead, ensuring deterministic response times-for example, triggering a 20-channel A/D scan precisely every 100 µs in R5F104LKAFA#30-based motor control or sensor fusion applications.

What package type and pin count does the R5F104LKAFA#30 use, and what are its thermal and mounting requirements?

The R5F104LKAFA#30 uses a 64-pin LQFP package (12 × 12 mm, 0.65 mm pitch, PLQP0064JA-A code) rated for -40 to +85°C (A-grade). It requires a 0.47–1 µF capacitor between REGC and VSS for stable internal voltage regulation. No exposed pad or special thermal vias are needed, simplifying PCB layout and reflow for R5F104LKAFA#30 integration into standard industrial assemblies.