Renesas R5F100JKDFA#V0

Overview

R5F100JKDFA#V0 from Renesas is a 52-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring 256 KB flash, 8 KB data flash, 20 KB RAM, 16-bit RL78 CPU core, and real-time clock with calendar support - deployed in industrial motor control, sensor hubs, and battery-powered HMI systems.

For engineers reviewing the R5F100JKDFA#V0 datasheet, R5F100JKDFA#V0 pinout, R5F100JKDFA#V0 application, or R5F100JKDFA#V0 equivalent, key selection criteria include its 256 KB code flash with self-programming, 8 KB background-operable data flash, 52-pin LQFP package with 38 I/Os, ultra-low-power STOP mode (0.57 μA), and integrated 10-bit ADC with 24 analog inputs.

Technical Context

The R5F100JKDFA#V0 implements the RL78 CISC CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 μs (@32 MHz) to 30.5 μs (@32.768 kHz), and operates across 1.6–5.5 V with ambient temperature range –40°C to +85°C (Industrial D-grade).

It integrates dual serial interfaces per channel (CSI, UART/LIN, I²C), up to 16 × 16-bit timers including RTC with calendar/alarm, 10-bit ADC with internal reference and temperature sensor, DMA controller (4 channels), and hardware multiplier/divider for embedded control math.

Key Specifications

Pinout & Package

Package: 52-pin LQFP (10 × 10 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 microcontroller applications.

Compared with R5F100JKDFA#V0, R5F101JKDFA#V0 removes data flash to reduce cost and die size but retains all other capabilities, while R5F100JLDFA#V0 doubles flash and RAM for complex control stacks - both share identical pinout, timing, and power behavior.

Availability

R5F100JKDFA#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor hubs, and energy metering requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F100JKDFA#V0 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/G13 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications demanding high integration, robustness, and extended battery life.

FAQ

What is the operating voltage range of the R5F100JKDFA#V0?

The R5F100JKDFA#V0 operates from 1.6 V to 5.5 V, enabling direct compatibility with single-cell Li-ion, 3.3 V, and 5 V system rails. Its on-chip voltage detector (LVD) provides 14 programmable reset/interrupt thresholds within this range, ensuring reliable brown-out handling without external supervision circuitry. This wide supply range simplifies power architecture in mixed-voltage industrial designs.

Does the R5F100JKDFA#V0 support in-system programming via standard interfaces?

Yes, the R5F100JKDFA#V0 supports in-system programming using its on-chip debug interface (via TOOLRxD/TOOLTxD pins) and includes self-programming capability for both code and data flash. It features flash shield window and boot swap functions for secure firmware updates. No external programmer is required for field upgrades - only a UART connection and Renesas Flash Development Toolkit are needed.

How many analog input channels does the R5F100JKDFA#V0 support, and what is the ADC resolution?

The R5F100JKDFA#V0 integrates a 10-bit successive-approximation ADC with up to 24 analog input channels. It includes an internal 1.45 V reference and an integrated temperature sensor usable in HS (high-speed main) mode. The ADC supports scan mode, group conversion, and hardware trigger synchronization with timers - essential for synchronized multi-sensor acquisition in motor control.

What real-time clock (RTC) capabilities does the R5F100JKDFA#V0 provide?

The R5F100JKDFA#V0 includes a full-featured RTC with calendar support (year/month/day/hour/minute/second), alarm interrupt, periodic interrupt, and automatic clock correction. It operates independently in STOP mode with only 0.57 μA current draw, using either the 32.768 kHz crystal or internal sub-system clock. This eliminates need for external RTC ICs in time-stamped logging and scheduled wake-up applications.

Is the R5F100JKDFA#V0 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F100JKDFA#V0 is fully pin-compatible with all other 52-pin LQFP RL78/G13 devices (e.g., R5F100JCDFA#V0, R5F100JLDFA#V0), sharing identical pin configuration, electrical characteristics, and peripheral mapping. This allows drop-in replacement for memory or feature scaling - for example, upgrading to R5F100JLDFA#V0 for increased flash without layout changes.