Renesas R5F104PFAFB#X0

Overview

R5F104PFAFB#X0 from Renesas is a 100-pin LFQFP, 0.5 mm pitch, industrial-grade (G) 16-bit RL78/G14 microcontroller with 96 KB flash, 4 KB data flash, 12 KB RAM, 1.6–5.5 V operation, and -40 to +105°C ambient range-designed for battery-powered industrial sensors and motor control interfaces requiring ultra-low power (66 μA/MHz) and integrated analog peripherals.

For engineers reviewing the R5F104PFAFB#X0 datasheet, R5F104PFAFB#X0 pinout, R5F104PFAFB#X0 application, or R5F104PFAFB#X0 equivalent, key selection criteria include its 100-pin LFQFP-0.5 mm package, 96 KB code flash with self-programming, 12-bit RTC with calendar, dual 8/10-bit ADC (20-channel), and hardware event linking via ELC for deterministic real-time response in constrained embedded systems.

Technical Context

The R5F104PFAFB#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 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 on-chip flash (1 KB block size), 4 KB data flash with background operation (BGO), and 12 KB RAM.

Peripheral integration includes 10-channel serial interface support (3× CSI, 4× UART/LIN, up to 10× I²C), 12-channel 16-bit timer array (TAU), 12-bit interval timer, real-time clock with calendar/alarm, 20-channel 8/10-bit ADC with internal 1.45 V reference and temperature sensor, and Event Link Controller (ELC) enabling direct peripheral-to-peripheral signal routing without CPU intervention.

Key Specifications

Pinout & Package

Package: 100-pin LFQFP, 14 × 14 mm, 0.5 mm pitch (Renesas code PLQP0100KE-A), lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104PFAFB#X0, R5F104PGAFB#X0 provides 33% more flash and double data flash endurance for complex connectivity tasks, while R5F104PHAFB#X0 adds analog output capability and 67% more RAM-making both suitable for scalability paths where R5F104PFAFB#X0 serves as the baseline industrial control node.

Availability

R5F104PFAFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, motor drive interfaces, PLC I/O modules, and energy metering front-ends requiring stable component supply across extended product lifecycles.

Supply support for R5F104PFAFB#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 performance for general-purpose industrial applications, integrating analog peripherals, real-time control features, and security functions into a single chip for cost-sensitive embedded systems.

FAQ

What is the maximum operating frequency and corresponding current consumption of the R5F104PFAFB#X0?

The R5F104PFAFB#X0 operates up to 32 MHz with a typical active current of 66 μA/MHz at VDD = 3.3 V and TA = 25°C. At full speed, this yields ~2.1 mA total active current. In STOP mode with only RTC and LVD active, it draws 0.60 μA-enabling multi-year battery operation in duty-cycled sensor applications. The high-speed on-chip oscillator supports ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C.

Does the R5F104PFAFB#X0 support in-system programming and secure firmware updates?

Yes, the R5F104PFAFB#X0 supports full in-system programming via on-chip debug interface and includes flash shield window functionality to protect designated memory regions from unauthorized read/write access. It also implements boot swap capability, allowing validated firmware images to be loaded into inactive flash banks and atomically activated-ensuring fail-safe updates without bricking the device during power loss.

How many analog input channels and what ADC resolution does the R5F104PFAFB#X0 provide?

The R5F104PFAFB#X0 integrates an 8/10-bit successive approximation ADC with 20 configurable analog input channels (ANI0–ANI19). It supports single-ended and differential measurements, includes an internal 1.45 V reference voltage, and features an integrated temperature sensor calibrated across the -40 to +105°C range-eliminating need for external references or thermal sensors in most industrial monitoring designs.

What serial communication interfaces are available on the R5F104PFAFB#X0 and how are they allocated?

The R5F104PFAFB#X0 provides 3 CSI (SPI-compatible) channels, 4 UART/LIN channels (with LIN 2.2 compliance), and up to 10 I²C channels-all multiplexed across 24 GPIO pins. Pin allocation is flexible via Peripheral I/O Redirection Registers (PIOR0/1), allowing designers to assign UART0, I²C0, and CSI0 to non-default pins-critical for PCB layout optimization in dense 100-pin LFQFP designs.

Is the R5F104PFAFB#X0 pin-compatible with other RL78/G14 variants in the same package?

Yes, all RL78/G14 devices in the 100-pin LFQFP-0.5 mm package-including R5F104PFAFB#X0, R5F104PGAFB#X0, and R5F104PHAFB#X0-share identical pinouts and electrical characteristics. This allows direct hardware reuse across memory and feature variants, simplifying design scalability and reducing qualification effort when upgrading flash size, RAM, or peripheral count in production programs.