Renesas R5F104JEAFA#30

Overview

R5F104JEAFA#30 from Renesas is a 52-pin LQFP-0.65mm MCU in the RL78/G14 family, featuring 192 KB flash, 20 KB RAM, 10-bit ADC (16 channels), and real-time clock with calendar function. It operates from 1.6–5.5 V, delivers 44 DMIPS at 32 MHz, and supports ultra-low-power HALT/STOP/SNOOZE modes - used in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F104JEAFA#30 datasheet, R5F104JEAFA#30 pinout, R5F104JEAFA#30 application, or R5F104JEAFA#30 equivalent, key selection criteria include its 52-pin LQFP package, 192 KB code flash with data flash shield window, integrated RTC with alarm/calendar, and dual UART + I²C + CSI interfaces for sensor hub and HMI control designs.

Technical Context

The R5F104JEAFA#30 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). It integrates a Data Transfer Controller (DTC) for autonomous memory transfers and an Event Link Controller (ELC) enabling direct peripheral-to-peripheral event routing without CPU intervention.

Its analog subsystem includes a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, plus an 8-bit D/A converter with real-time output capability. Power management features include on-chip LVD with 14 selectable voltage thresholds and POR circuitry for robust startup under varying supply conditions.

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 × 10 mm, 0.65 mm pitch (Renesas code PLQP0052JA-A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104JEAFA#30, R5F104JGAFA#30 provides headroom for feature-rich firmware growth, while R5F104JHAFA#30 ensures timing and analog accuracy at elevated temperatures - both retain identical peripheral configuration and toolchain compatibility.

Availability

R5F104JEAFA#30 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control panels, and building automation controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F104JEAFA#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, and power management solutions for industrial, automotive, and IoT markets.

The RL78/G14 product line delivers true low-power performance (66 μA/MHz) with rich analog integration and flexible serial connectivity - designed specifically for cost-sensitive, battery-operated, and energy-efficient embedded control applications.

FAQ

What is the operating temperature range for the R5F104JEAFA#30?

The R5F104JEAFA#30 is specified for operation from -40°C to +85°C (A-grade), making it suitable for consumer and industrial indoor applications. Its on-chip LVD and RTC maintain accuracy across this full range, and the device supports HALT/STOP modes to minimize thermal drift during low-power operation. The R5F104JEAFA#30 does not support extended temperature grades - for +105°C operation, consider the R5F104JHAFA#30 variant.

Does the R5F104JEAFA#30 support in-circuit debugging?

Yes, the R5F104JEAFA#30 includes full on-chip debug functionality via the single-wire debug interface using pins P40 (TOOL0) and P41 (TRJIO0). It supports breakpoints, watchpoints, and real-time variable monitoring without halting peripheral operation. The R5F104JEAFA#30 also supports flash self-programming with boot swapping, enabling secure field firmware updates through the debug interface.

How many UART channels does the R5F104JEAFA#30 provide, and do they support LIN bus?

The R5F104JEAFA#30 provides three UART channels, all of which support LIN bus protocol (LIN 2.2A compliant) with automatic sync-break detection and checksum calculation. UART0 (P50/P51) and UART1 (P00/P01) are primary interfaces; UART2 (P13/P14) serves as auxiliary channel. Each UART can operate independently at baud rates up to 4 Mbps, and the ELC allows LIN wakeup events to trigger CPU wake-from-STOP without polling.

Can the R5F104JEAFA#30 perform ADC conversions while in low-power mode?

Yes, the R5F104JEAFA#30 supports ADC operation in SNOOZE mode: the CPU sleeps while the ADC runs autonomously, triggered by internal timer or external event, and notifies completion via interrupt. In STOP mode, only RTC and LVD remain active - ADC requires at least HALT mode. The R5F104JEAFA#30's 10-bit ADC achieves 1.45 V internal reference accuracy and includes sample-and-hold for precise multi-channel acquisition.

What packaging and lead finish does the R5F104JEAFA#30 use?

The R5F104JEAFA#30 uses a 52-pin LQFP package (10 × 10 mm, 0.65 mm pitch) with lead-free (Pb-free) matte tin finish, compliant with JEDEC J-STD-020 moisture sensitivity level 3. It ships in tray packaging (#V0 or #X0 specification) and is RoHS and REACH compliant. The exposed pad is not present - unlike HWQFN variants, this LQFP version relies on standard perimeter leads for thermal and mechanical mounting.