Renesas R5F104BEAFP#V0

Overview

R5F104BEAFP#V0 from Renesas is a 32-bit RL78/G14 microcontroller with 48 KB flash, 5.5 KB RAM, and 44-pin LQFP-0.8 mm package, operating from 1.6–5.5 V at -40 to +85°C (industrial grade D). It delivers 44 DMIPS at 32 MHz, features ultra-low-power HALT/STOP/SNOOZE modes (66 μA/MHz active, 0.60 μA RTC+LVD), and integrates 10-bit ADC (16 channels), UART/I²C/CSI interfaces, RTC, and on-chip debug.

For engineers reviewing the R5F104BEAFP#V0 datasheet, R5F104BEAFP#V0 pinout, R5F104BEAFP#V0 application, or R5F104BEAFP#V0 equivalent, key selection criteria include industrial temperature support, integrated data flash (4 KB), real-time clock with calendar, low-voltage operation down to 1.6 V, and peripheral flexibility via I/O redirection registers for sensor hubs, motor control, and smart metering.

Technical Context

The RL78 CPU core uses a 3-stage CISC pipeline with configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz) and supports multiply/divide/accumulate operations. Its memory architecture includes separate code flash (48 KB, 1 KB blocks), data flash (4 KB, 1M rewrite cycles), and SRAM (5.5 KB), all accessible within a 1 MB address space.

Peripheral integration centers on event-driven operation: the Event Link Controller (ELC) enables direct hardware linking of 19–26 event sources to peripherals without CPU intervention, while the Data Transfer Controller (DTC) supports block, repeat, and chain transfers triggered by interrupts - critical for deterministic sensor data acquisition and low-CPU-overhead communication stacks.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, JEDEC standard PLQP0044GC-A footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104CEAFP#V0, the R5F104BEAFP#V0 trades 16 KB flash capacity for lower unit cost and smaller code footprint, while R5F104BEAFB#V0 expands I/O count without altering functional capability - enabling scalable design across product tiers using the same software base.

Availability

R5F104BEAFP#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor aggregation, home appliance control, motor drive interface, and battery-powered IoT edge nodes requiring stable component supply across long production lifecycles.

Supply support for R5F104BEAFP#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 enterprise markets.

The RL78/G14 family targets cost-sensitive, ultra-low-power general-purpose applications - balancing performance, integration, and energy efficiency for industrial controls, consumer appliances, and infrastructure monitoring.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104BEAFP#V0?

The R5F104BEAFP#V0 operates at up to 32 MHz with a measured performance of 44 DMIPS. This rating is achieved using the RL78 CPU core's 3-stage pipeline and optimized instruction set, validated under standard test conditions (VDD = 3.3 V, TA = 25°C). The core supports dynamic clock scaling down to 32.768 kHz for ultra-low-power RTC operation.

Does the R5F104BEAFP#V0 include an integrated data flash memory, and what is its endurance specification?

Yes, the R5F104BEAFP#V0 includes 4 KB of on-chip data flash memory. Its endurance is rated at 1,000,000 write/erase cycles (typical) across the full VDD range of 1.8–5.5 V. Background operation (BGO) allows program execution from code flash while rewriting data flash - enabling seamless firmware parameter updates and logging without halting application logic.

What are the supported serial communication interfaces on the R5F104BEAFP#V0, and how many instances of each are available?

The R5F104BEAFP#V0 supports three UART channels (with LIN-bus capability), four I²C/simplified I²C channels, and three CSI (SPI-compatible) channels. These interfaces are implemented in hardware with independent baud rate generators and FIFO buffers, and their pin assignments are configurable via peripheral I/O redirection registers to optimize PCB routing.

What is the analog input capability of the R5F104BEAFP#V0, including resolution, channel count, and reference options?

The R5F104BEAFP#V0 integrates a 10-bit successive-approximation ADC with 16 analog input channels (ANI0–ANI15). It supports internal 1.45 V reference voltage and external reference inputs (AVREFP/AVREFM), enabling both single-ended and differential measurements. A built-in temperature sensor is also provided for system thermal monitoring.

How does the R5F104BEAFP#V0 achieve ultra-low-power operation, and what are the key low-power modes?

The R5F104BEAFP#V0 achieves ultra-low-power operation through multiple hardware-controlled sleep modes: HALT (CPU stopped, peripherals active), STOP (all clocks halted except RTC/LVD, 0.60 μA), and SNOOZE (selected peripherals active during CPU sleep). Its 66 μA/MHz active current and sub-μA STOP mode are enabled by adaptive voltage regulation, clock gating, and optimized circuit design - verified across the full -40 to +85°C industrial temperature range.