Renesas R5F104JDAFA#X0

Overview

R5F104JDAFA#X0 from Renesas is a 52-pin LQFP-0.65 mm pitch, industrial-grade (D) RL78/G14 16-bit microcontroller with 96 KB flash, 12 KB RAM, and 8 KB data flash. It delivers 44 DMIPS at 32 MHz, operates from 1.6–5.5 V, and supports ultra-low-power modes (66 μA/MHz active, 0.60 μA RTC+LVD). It targets battery-powered industrial sensor nodes requiring integrated analog peripherals and robust serial connectivity.

For engineers reviewing the R5F104JDAFA#X0 datasheet, R5F104JDAFA#X0 pinout, R5F104JDAFA#X0 application, or R5F104JDAFA#X0 equivalent, key selection criteria include its 52-pin LQFP package, 96 KB/8 KB/12 KB memory configuration, dual UART + I²C + CSI interfaces, 10-bit 16-channel ADC, and industrial −40°C to +85°C temperature rating.

Technical Context

The R5F104JDAFA#X0 implements the RL78 CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz), and includes multiply/divide/accumulate instructions. Its memory subsystem integrates 96 KB code flash (1 KB block size), 8 KB data flash with background operation (BGO), and 12 KB on-chip RAM.

Peripheral integration includes a 10-bit 16-channel ADC with internal 1.45 V reference and temperature sensor, dual UARTs (one LIN-capable), four I²C channels, up to eight CSI channels, twelve 16-bit timers (including RTC with calendar), and an Event Link Controller (ELC) enabling hardware-triggered peripheral chaining without CPU intervention.

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 × 10 mm body, 0.65 mm pitch, plastic, surface-mount. Compliant with JEDEC MS-026.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104JGAFA#X0 and R5F104JDGFA#X0, the R5F104JDAFA#X0 provides optimal balance of memory, temperature rating, and cost for standard industrial control - avoiding over-specification while ensuring full feature compatibility within the RL78/G14 family.

Availability

R5F104JDAFA#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and programmable logic relays requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F104JDAFA#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 automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial control, sensor interfacing, and appliance applications - combining high integration, robust peripheral sets, and ultra-low active/sleep current.

FAQ

What is the maximum operating frequency and performance of the R5F104JDAFA#X0?

The R5F104JDAFA#X0 operates at up to 32 MHz and delivers 44 DMIPS. This performance level supports real-time control loops, sensor data fusion, and lightweight communication stacks. Its RL78 CPU core achieves this with a 3-stage pipeline and efficient instruction set, making the R5F104JDAFA#X0 suitable for deterministic industrial applications where latency and throughput must be predictable.

Does the R5F104JDAFA#X0 support in-system programming and secure flash protection?

Yes, the R5F104JDAFA#X0 supports full in-system programming via on-chip debug interface and includes flash security features such as block erase prohibition and flash shield window function. These capabilities allow secure firmware updates and prevent unauthorized access to code flash contents - critical for protecting proprietary algorithms in deployed R5F104JDAFA#X0-based systems.

What analog peripherals are integrated into the R5F104JDAFA#X0?

The R5F104JDAFA#X0 integrates a 10-bit 16-channel ADC with internal 1.45 V reference voltage and on-chip temperature sensor, plus two comparator channels. It also supports VCOUT0/VCOUT1 for analog output control. These peripherals enable direct connection to thermistors, pressure transducers, and other analog sensors without external signal conditioning - a key capability for compact R5F104JDAFA#X0-based measurement designs.

How does the R5F104JDAFA#X0 manage power in battery-operated applications?

The R5F104JDAFA#X0 achieves ultra-low power consumption with 66 μA/MHz active current and 0.60 μA in STOP mode (RTC + LVD active). Its HALT, STOP, and SNOOZE modes, combined with programmable voltage detector (14 levels), allow precise power-state transitions. This makes the R5F104JDAFA#X0 ideal for energy harvesting and long-life battery applications where minimizing quiescent current is essential.

Which serial interfaces are available on the R5F104JDAFA#X0 and how are they configured?

The R5F104JDAFA#X0 provides three UART channels (one LIN-capable), four I²C channels, and up to eight CSI (SPI-compatible) channels - all configurable via peripheral I/O redirection registers. Pins P10–P17 and P70–P75 support multiplexed serial functions, enabling flexible routing for RS-485 gateways, sensor buses, or display interfaces without PCB changes - a major advantage in R5F104JDAFA#X0 hardware design.