Renesas R5F104EEANA#U0

Overview

R5F104EEANA#U0 from Renesas is a 40-pin HWQFN-packaged 16-bit RL78/G14 microcontroller with 48 KB flash, 5.5 KB RAM, and 4 KB data flash, operating from 1.6 V to 5.5 V at up to 32 MHz (44 DMIPS). It integrates 10-bit ADC (16 channels), RTC, UART/SPI/I²C interfaces, and ultra-low-power modes (0.60 μA in STOP with RTC+LVD), targeting battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F104EEANA#U0 datasheet, R5F104EEANA#U0 pinout, R5F104EEANA#U0 application, or R5F104EEANA#U0 equivalent, key selection criteria include its 40-pin 6×6 mm HWQFN package, 48 KB code flash with self-programming, 10-bit ADC accuracy over 1.6–5.5 V supply, and support for LIN-compliant UART in automotive body electronics and home appliance control units.

Technical Context

The R5F104EEANA#U0 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 comprises 48 KB on-chip flash (1 KB block size), 5.5 KB RAM, and 4 KB data flash rated for 1 million rewrites with background operation (BGO).

Peripheral integration includes eight 16-bit timer channels (TAU, RJ, RD, RG), one 12-bit interval timer, calendar RTC with alarm/correction, watchdog timer, 10-bit ADC with internal 1.45 V reference and temperature sensor, and dual-channel 8-bit DAC with real-time output. Serial connectivity spans three UART/LIN channels, up to eight CSI (SPI-compatible) channels, and up to ten I²C/simplified I²C channels.

Key Specifications

Pinout & Package

40-pin HWQFN (6 × 6 mm, 0.5 mm pitch) with exposed die pad; RoHS-compliant, moisture sensitivity level 3. Pin functions include dual UART/LIN channels (TxD2/RxD2, TxD0/RxD0), 16-channel 10-bit ADC inputs (ANI0–ANI19), RTC clock pins (X1/X2), reset (RESET), and power management (REGC, VDD, VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104EGANA#U0 and R5F104BEANA#U0, the R5F104EEANA#U0 delivers optimal balance of memory (48 KB flash/5.5 KB RAM), ultra-low-power capability (0.60 μA STOP), and 40-pin HWQFN footprint-making it ideal for mid-tier industrial and appliance applications requiring field-upgradable firmware without over-provisioning.

Availability

R5F104EEANA#U0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized Renesas distribution channels.

Supply support for R5F104EEANA#U0 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 (66 μA/MHz, 0.60 μA STOP) with rich analog and communication peripherals-designed specifically for cost-sensitive, battery-operated, and energy-efficient embedded systems.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104EEANA#U0?

The R5F104EEANA#U0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 44 DMIPS of processing performance. This rating is measured under standard conditions (VDD = 3.3 V, TA = 25°C) and reflects the RL78 core's 3-stage pipeline efficiency with optimized instruction mix. The R5F104EEANA#U0 maintains this performance across its full 1.6–5.5 V supply range.

Does the R5F104EEANA#U0 support LIN bus communication, and which UART channel implements it?

Yes, the R5F104EEANA#U0 supports LIN 2.2-compliant communication via its UART2 channel (pins P13/TxD2 and P14/RxD2), which includes hardware timing features required for LIN physical layer compliance. The UART2 module supports automatic sync-break detection, checksum calculation, and configurable baud rates down to 1.2 kbps-meeting ISO 17987-4 requirements for automotive body electronics applications.

What is the data flash endurance specification and voltage range for rewriting the R5F104EEANA#U0?

The R5F104EEANA#U0 specifies 1,000,000 write/erase cycles (typical) for its 4 KB data flash memory, with guaranteed operation across the full supply range of VDD = 1.8 V to 5.5 V. Rewrites can be performed in background operation (BGO) mode, allowing concurrent CPU execution from program memory-critical for logging and configuration storage in field-deployed devices.

How is the REGC pin used on the R5F104EEANA#U0, and what capacitor value is required?

The REGC pin on the R5F104EEANA#U0 connects to the internal voltage regulator's bypass node and must be tied to VSS via a 0.47 μF to 1.0 μF ceramic capacitor. This capacitor stabilizes the regulator output during transient load changes and ensures reliable operation of the on-chip oscillators and analog peripherals. Failure to install this capacitor may cause erratic reset behavior or ADC inaccuracies.

Which pins on the R5F104EEANA#U0 support the real-time clock (RTC) function, and what crystal frequency is required?

The R5F104EEANA#U0 uses pins P121 (X1) and P122 (X2) for the 32.768 kHz tuning-fork crystal required by the RTC module. These pins support both crystal and external clock input modes. The RTC provides calendar functionality (99-year range), alarm interrupt, and clock correction-operating independently in STOP mode with only 0.60 μA current draw when powered from VDD.