Renesas R5F104EAGNA#W0

Overview

R5F104EAGNA#W0 from Renesas is a 40-pin HWQFN-packaged RL78/G14 16-bit microcontroller with 64 KB flash, 5.5 KB RAM, and 4 KB data flash, operating from 1.6–5.5 V at -40 to +105°C (industrial G-grade). It delivers 44 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.60 μA in RTC+LVD mode), and integrates UART, I²C, CSI, 16-bit timers, 10-bit ADC (16 channels), and RTC with calendar.

For engineers reviewing the R5F104EAGNA#W0 datasheet, R5F104EAGNA#W0 pinout, R5F104EAGNA#W0 application, or R5F104EAGNA#W0 equivalent, key selection criteria include industrial-temperature operation, embedded control with integrated analog peripherals, low-power sensor interface capability, and compatibility with Renesas' RL78 ecosystem tools including CS+ and e² studio.

Technical Context

The R5F104EAGNA#W0 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). It uses on-chip high-accuracy ±1.0% oscillator (selectable 1–64 MHz) and includes dedicated low-speed oscillator for watchdog timer.

Peripheral integration centers on event-driven efficiency: Event Link Controller (ELC) enables direct hardware linking of 19–26 event sources to peripherals without CPU intervention, while Data Transfer Controller (DTC) supports background data movement via normal, repeat, and block transfer modes with chain functionality.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS for thermal and electrical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F104EAGNA#W0, R5F104EGGNA#W0 offers headroom for feature-rich industrial firmware, while R5F104EEGNA#W0 maintains identical peripheral functionality at lower code density - enabling drop-in replacement in footprint-constrained designs where flash utilization is below 48 KB.

Availability

R5F104EAGNA#W0 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, wireless sensor nodes, and programmable logic controller I/O modules requiring stable component supply across extended product lifecycles.

Supply support for R5F104EAGNA#W0 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 targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering optimized performance-per-milliwatt for battery-operated and thermally constrained industrial controls.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104EAGNA#W0?

The R5F104EAGNA#W0 operates up to 32 MHz with an RL78 CPU core delivering 44 DMIPS. Its high-accuracy ±1.0% on-chip oscillator eliminates external crystal requirements for many timing-critical applications, and instruction execution time scales from 0.03125 μs (at 32 MHz) to 30.5 μs (at 32.768 kHz), supporting both high-speed control and ultra-low-power RTC operation. This makes R5F104EAGNA#W0 suitable for real-time industrial control where deterministic timing and low standby current are essential.

Does the R5F104EAGNA#W0 support hardware-accelerated communication protocols beyond basic UART and I²C?

Yes, the R5F104EAGNA#W0 integrates Simplified SPI (CSI) with 3–8 channels, UART/LIN with 3–4 channels, and I²C/simplified I²C with 4–10 channels. Its Event Link Controller (ELC) enables hardware-triggered protocol handshaking - for example, linking an ADC conversion complete signal directly to a CSI transmit start, eliminating CPU involvement. This offloads timing-critical sequencing from firmware and improves system responsiveness in R5F104EAGNA#W0-based sensor fusion or motor feedback applications.

How does the R5F104EAGNA#W0 achieve ultra-low power consumption in industrial temperature ranges?

The R5F104EAGNA#W0 achieves 66 μA/MHz active current and 0.60 μA in STOP mode (RTC + LVD only) across -40 to +105°C via adaptive circuit design, multiple low-power modes (HALT, STOP, SNOOZE), and a dedicated low-speed on-chip oscillator for watchdog operation. Its G-grade qualification ensures parameter stability across the full range, and the REGC pin requires a 0.47–1 μF capacitor to VSS to stabilize the internal regulator - a critical design step verified in Renesas' hardware design guidelines for R5F104EAGNA#W0.

What analog peripherals are integrated into the R5F104EAGNA#W0, and how are they calibrated?

The R5F104EAGNA#W0 includes a 10-bit SAR ADC with 16 input channels, internal 1.45 V reference voltage, and integrated temperature sensor. It also features an 8-bit DAC (up to two channels) and up to two comparators with window mode. Calibration is supported via factory-trimmed reference values stored in ROM, and the ADC supports offset/gain adjustment registers. The on-chip temperature sensor is pre-calibrated and usable for ambient monitoring or ADC reference drift compensation - all confirmed in the R5F104EAGNA#W0 datasheet section "A/D Converter".

Is the R5F104EAGNA#W0 pin-compatible with other RL78/G14 variants in the same 40-pin HWQFN package?

Yes, all RL78/G14 devices in the 40-pin HWQFN package (including R5F104EAxxx#W0, R5F104EExxx#W0, R5F104EGxxx#W0, and R5F104EHxxx#W0) share identical pinouts and electrical characteristics per pin. This allows direct substitution within the same package family for memory or feature scaling - for example, upgrading from R5F104EAGNA#W0 (64 KB) to R5F104EGGNA#W0 (128 KB) requires no PCB changes, only firmware and toolchain updates. Pin compatibility is explicitly guaranteed in Renesas' RL78/G14 datasheet Table 1-1 and Package Outline Drawings.