Renesas R5F104EAANA#U0

Overview

R5F104EAANA#U0 from Renesas is a 40-pin HWQFN-packaged 16-bit RL78/G14 microcontroller with 64 KB flash, 5.5 KB RAM, and 4 KB data flash, operating from 1.6–5.5 V at -40°C to +85°C (A-grade), delivering 44 DMIPS at 32 MHz for low-power industrial control and sensor interface applications.

For engineers reviewing the R5F104EAANA#U0 datasheet, R5F104EAANA#U0 pinout, R5F104EAANA#U0 application, or R5F104EAANA#U0 equivalent, key selection criteria include its 64 KB code flash size, 40-pin 6×6 mm HWQFN-40 package, integrated 10-bit ADC (20-channel), real-time clock with calendar, and ultra-low power STOP mode (0.60 μA).

Technical Context

The R5F104EAANA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator (selectable 1–64 MHz) and supports SNOOZE mode for peripheral-triggered wake-up without CPU intervention.

Its peripheral set includes three UART/LIN channels, four I²C interfaces, up to eight 16-bit timer channels (TAU, RJ, RD, RG), a 12-bit interval timer, and event-link controller (ELC) enabling hardware-triggered peripheral chaining-reducing CPU load in deterministic real-time systems.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch), exposed die pad (recommended to connect to VSS), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BEANA#U0, the R5F104EAANA#U0 provides 2× flash and 37.5% more RAM for robust firmware updates and larger sensor buffers; versus R5F104ECANA#U0, it reduces cost and power while retaining full peripheral compatibility for mid-tier industrial designs.

Availability

R5F104EAANA#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 support, and RoHS-compliant packaging.

Supply support for R5F104EAANA#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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power performance (66 μA/MHz) with rich analog integration and real-time peripherals-designed specifically for cost-sensitive, battery-operated, and industrial control applications demanding reliability and longevity.

FAQ

What is the maximum clock frequency and corresponding DMIPS rating for the R5F104EAANA#U0?

The R5F104EAANA#U0 operates at a maximum frequency of 32 MHz, achieving 44 DMIPS performance. This is measured using the EEMBC CoreMark benchmark and reflects the RL78 CPU's 3-stage pipeline efficiency. The on-chip oscillator supports this speed with ±1.0% accuracy across 1.8–5.5 V and -40°C to +85°C, eliminating need for external crystal in many applications. The R5F104EAANA#U0 maintains full peripheral functionality at all supported frequencies.

Does the R5F104EAANA#U0 support in-system programming and secure firmware updates?

Yes, the R5F104EAANA#U0 supports full in-system programming via its on-chip debug interface and includes boot-swap functionality plus flash-shield window protection. These features allow safe field firmware updates without erasing critical parameters. The 64 KB code flash is organized in 1 KB blocks, and security functions prohibit unauthorized block erase or rewrite. The R5F104EAANA#U0 also supports self-programming with background operation during data flash writes.

How many analog input channels and what ADC resolution does the R5F104EAANA#U0 provide?

The R5F104EAANA#U0 integrates a 10-bit successive-approximation ADC with up to 20 analog input channels (ANI0–ANI19), including dedicated AVREFP/AVREFM pins for precise ratiometric measurements. It also includes an internal 1.45 V reference and on-die temperature sensor-enabling calibration-free thermal compensation. The ADC operates across the full 1.6–5.5 V supply range, and conversion results are accessible via DMA or interrupt-driven reads. This capability is fully implemented in the R5F104EAANA#U0.

What power modes are available on the R5F104EAANA#U0, and what is the lowest achievable current draw?

The R5F104EAANA#U0 offers HALT, STOP, and SNOOZE low-power modes. In STOP mode-with only RTC and LVD active-the device draws just 0.60 μA (typical) at 25°C. This enables decade-long battery operation in metering and sensor applications. SNOOZE mode allows selected peripherals (e.g., ADC, UART) to operate autonomously while CPU remains halted, waking only on event completion. All modes are accessible via software control and retain RAM contents. The R5F104EAANA#U0 achieves 66 μA/MHz in active mode.

Is the R5F104EAANA#U0 pin-compatible with other RL78/G14 variants in the same package?

Yes, the R5F104EAANA#U0 is pin-compatible with all other RL78/G14 devices in the 40-pin HWQFN package (e.g., R5F104BEANA#U0, R5F104ECANA#U0), sharing identical pin count, pitch, and mechanical footprint. Peripheral pin assignments-including ADC inputs, UART signals, and timer outputs-are consistent across the family. Firmware portability is further enhanced by identical memory mapping and register layout. This allows scalable design reuse from 32 KB to 128 KB flash variants without PCB revision. The R5F104EAANA#U0 maintains full functional compatibility within its package group.